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Pull pvops into release branch

hifive-unleashed-5.1
Tony Luck 2009-03-31 14:25:08 -07:00 committed by Tony Luck
parent 50fbe56c12 7120569c76
commit c66b31f392
45 changed files with 3134 additions and 212 deletions
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6
arch/ia64/include/asm/intrinsics.h
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@ -202,7 +202,11 @@ extern long ia64_cmpxchg_called_with_bad_pointer (void);
#ifndef __ASSEMBLY__
#if defined(CONFIG_PARAVIRT) && defined(__KERNEL__)
#define IA64_INTRINSIC_API(name) pv_cpu_ops.name
#ifdef ASM_SUPPORTED
# define IA64_INTRINSIC_API(name) paravirt_ ## name
#else
# define IA64_INTRINSIC_API(name) pv_cpu_ops.name
#endif
#define IA64_INTRINSIC_MACRO(name) paravirt_ ## name
#else
#define IA64_INTRINSIC_API(name) ia64_native_ ## name

6
arch/ia64/include/asm/module.h
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@ -16,6 +16,12 @@ struct mod_arch_specific {
struct elf64_shdr *got; /* global offset table */
struct elf64_shdr *opd; /* official procedure descriptors */
struct elf64_shdr *unwind; /* unwind-table section */
#ifdef CONFIG_PARAVIRT
struct elf64_shdr *paravirt_bundles;
/* paravirt_alt_bundle_patch table */
struct elf64_shdr *paravirt_insts;
/* paravirt_alt_inst_patch table */
#endif
unsigned long gp; /* global-pointer for module */
void *core_unw_table; /* core unwind-table cookie returned by unwinder */

13
arch/ia64/include/asm/native/inst.h
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@ -30,6 +30,9 @@
#define __paravirt_work_processed_syscall_target \
ia64_work_processed_syscall
#define paravirt_fsyscall_table ia64_native_fsyscall_table
#define paravirt_fsys_bubble_down ia64_native_fsys_bubble_down
#ifdef CONFIG_PARAVIRT_GUEST_ASM_CLOBBER_CHECK
# define PARAVIRT_POISON 0xdeadbeefbaadf00d
# define CLOBBER(clob) \
@ -74,6 +77,11 @@
(pred) mov reg = psr \
CLOBBER(clob)
#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
(pred) mov reg = ar.itc \
CLOBBER(clob) \
CLOBBER_PRED(pred_clob)
#define MOV_TO_IFA(reg, clob) \
mov cr.ifa = reg \
CLOBBER(clob)
@ -158,6 +166,11 @@
#define RSM_PSR_DT \
rsm psr.dt
#define RSM_PSR_BE_I(clob0, clob1) \
rsm psr.be | psr.i \
CLOBBER(clob0) \
CLOBBER(clob1)
#define SSM_PSR_DT_AND_SRLZ_I \
ssm psr.dt \
;; \

38
arch/ia64/include/asm/native/patchlist.h 100644
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@ -0,0 +1,38 @@
/******************************************************************************
* arch/ia64/include/asm/native/inst.h
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#define __paravirt_start_gate_fsyscall_patchlist \
__ia64_native_start_gate_fsyscall_patchlist
#define __paravirt_end_gate_fsyscall_patchlist \
__ia64_native_end_gate_fsyscall_patchlist
#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
__ia64_native_start_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
__ia64_native_end_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_start_gate_vtop_patchlist \
__ia64_native_start_gate_vtop_patchlist
#define __paravirt_end_gate_vtop_patchlist \
__ia64_native_end_gate_vtop_patchlist
#define __paravirt_start_gate_mckinley_e9_patchlist \
__ia64_native_start_gate_mckinley_e9_patchlist
#define __paravirt_end_gate_mckinley_e9_patchlist \
__ia64_native_end_gate_mckinley_e9_patchlist

8
arch/ia64/include/asm/native/pvchk_inst.h
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@ -180,6 +180,11 @@
IS_PRED_IN(pred) \
IS_RREG_OUT(reg) \
IS_RREG_CLOB(clob)
#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
IS_PRED_IN(pred) \
IS_PRED_CLOB(pred_clob) \
IS_RREG_OUT(reg) \
IS_RREG_CLOB(clob)
#define MOV_TO_IFA(reg, clob) \
IS_RREG_IN(reg) \
IS_RREG_CLOB(clob)
@ -246,6 +251,9 @@
IS_RREG_CLOB(clob2)
#define RSM_PSR_DT \
nop 0
#define RSM_PSR_BE_I(clob0, clob1) \
IS_RREG_CLOB(clob0) \
IS_RREG_CLOB(clob1)
#define SSM_PSR_DT_AND_SRLZ_I \
nop 0
#define BSW_0(clob0, clob1, clob2) \

65
arch/ia64/include/asm/paravirt.h
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@ -22,6 +22,56 @@
#ifndef __ASM_PARAVIRT_H
#define __ASM_PARAVIRT_H
#ifndef __ASSEMBLY__
/******************************************************************************
* fsys related addresses
*/
struct pv_fsys_data {
unsigned long *fsyscall_table;
void *fsys_bubble_down;
};
extern struct pv_fsys_data pv_fsys_data;
unsigned long *paravirt_get_fsyscall_table(void);
char *paravirt_get_fsys_bubble_down(void);
/******************************************************************************
* patchlist addresses for gate page
*/
enum pv_gate_patchlist {
PV_GATE_START_FSYSCALL,
PV_GATE_END_FSYSCALL,
PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
PV_GATE_START_VTOP,
PV_GATE_END_VTOP,
PV_GATE_START_MCKINLEY_E9,
PV_GATE_END_MCKINLEY_E9,
};
struct pv_patchdata {
unsigned long start_fsyscall_patchlist;
unsigned long end_fsyscall_patchlist;
unsigned long start_brl_fsys_bubble_down_patchlist;
unsigned long end_brl_fsys_bubble_down_patchlist;
unsigned long start_vtop_patchlist;
unsigned long end_vtop_patchlist;
unsigned long start_mckinley_e9_patchlist;
unsigned long end_mckinley_e9_patchlist;
void *gate_section;
};
extern struct pv_patchdata pv_patchdata;
unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
void *paravirt_get_gate_section(void);
#endif
#ifdef CONFIG_PARAVIRT_GUEST
#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
@ -68,6 +118,14 @@ struct pv_init_ops {
int (*arch_setup_nomca)(void);
void (*post_smp_prepare_boot_cpu)(void);
#ifdef ASM_SUPPORTED
unsigned long (*patch_bundle)(void *sbundle, void *ebundle,
unsigned long type);
unsigned long (*patch_inst)(unsigned long stag, unsigned long etag,
unsigned long type);
#endif
void (*patch_branch)(unsigned long tag, unsigned long type);
};
extern struct pv_init_ops pv_init_ops;
@ -210,6 +268,8 @@ struct pv_time_ops {
int (*do_steal_accounting)(unsigned long *new_itm);
void (*clocksource_resume)(void);
unsigned long long (*sched_clock)(void);
};
extern struct pv_time_ops pv_time_ops;
@ -227,6 +287,11 @@ paravirt_do_steal_accounting(unsigned long *new_itm)
return pv_time_ops.do_steal_accounting(new_itm);
}
static inline unsigned long long paravirt_sched_clock(void)
{
return pv_time_ops.sched_clock();
}
#endif /* !__ASSEMBLY__ */
#else

143
arch/ia64/include/asm/paravirt_patch.h 100644
View File

@ -0,0 +1,143 @@
/******************************************************************************
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_PARAVIRT_PATCH_H
#define __ASM_PARAVIRT_PATCH_H
#ifdef __ASSEMBLY__
.section .paravirt_branches, "a"
.previous
#define PARAVIRT_PATCH_SITE_BR(type) \
{ \
[1:] ; \
br.cond.sptk.many 2f ; \
nop.b 0 ; \
nop.b 0;; ; \
} ; \
2: \
.xdata8 ".paravirt_branches", 1b, type
#else
#include <linux/stringify.h>
#include <asm/intrinsics.h>
/* for binary patch */
struct paravirt_patch_site_bundle {
void *sbundle;
void *ebundle;
unsigned long type;
};
/* label means the beginning of new bundle */
#define paravirt_alt_bundle(instr, privop) \
"\t998:\n" \
"\t" instr "\n" \
"\t999:\n" \
"\t.pushsection .paravirt_bundles, \"a\"\n" \
"\t.popsection\n" \
"\t.xdata8 \".paravirt_bundles\", 998b, 999b, " \
__stringify(privop) "\n"
struct paravirt_patch_bundle_elem {
const void *sbundle;
const void *ebundle;
unsigned long type;
};
struct paravirt_patch_site_inst {
unsigned long stag;
unsigned long etag;
unsigned long type;
};
#define paravirt_alt_inst(instr, privop) \
"\t[998:]\n" \
"\t" instr "\n" \
"\t[999:]\n" \
"\t.pushsection .paravirt_insts, \"a\"\n" \
"\t.popsection\n" \
"\t.xdata8 \".paravirt_insts\", 998b, 999b, " \
__stringify(privop) "\n"
struct paravirt_patch_site_branch {
unsigned long tag;
unsigned long type;
};
struct paravirt_patch_branch_target {
const void *entry;
unsigned long type;
};
void
__paravirt_patch_apply_branch(
unsigned long tag, unsigned long type,
const struct paravirt_patch_branch_target *entries,
unsigned int nr_entries);
void
paravirt_patch_reloc_br(unsigned long tag, const void *target);
void
paravirt_patch_reloc_brl(unsigned long tag, const void *target);
#if defined(ASM_SUPPORTED) && defined(CONFIG_PARAVIRT)
unsigned long
ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type);
unsigned long
__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
const struct paravirt_patch_bundle_elem *elems,
unsigned long nelems,
const struct paravirt_patch_bundle_elem **found);
void
paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
const struct paravirt_patch_site_bundle *end);
void
paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
const struct paravirt_patch_site_inst *end);
void paravirt_patch_apply(void);
#else
#define paravirt_patch_apply_bundle(start, end) do { } while (0)
#define paravirt_patch_apply_inst(start, end) do { } while (0)
#define paravirt_patch_apply() do { } while (0)
#endif
#endif /* !__ASSEMBLEY__ */
#endif /* __ASM_PARAVIRT_PATCH_H */
/*
* Local variables:
* mode: C
* c-set-style: "linux"
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*/

365
arch/ia64/include/asm/paravirt_privop.h
View File

@ -33,7 +33,7 @@
*/
struct pv_cpu_ops {
void (*fc)(unsigned long addr);
void (*fc)(void *addr);
unsigned long (*thash)(unsigned long addr);
unsigned long (*get_cpuid)(int index);
unsigned long (*get_pmd)(int index);
@ -60,12 +60,18 @@ extern unsigned long ia64_native_getreg_func(int regnum);
/* Instructions paravirtualized for performance */
/************************************************/
#ifndef ASM_SUPPORTED
#define paravirt_ssm_i() pv_cpu_ops.ssm_i()
#define paravirt_rsm_i() pv_cpu_ops.rsm_i()
#define __paravirt_getreg() pv_cpu_ops.getreg()
#endif
/* mask for ia64_native_ssm/rsm() must be constant.("i" constraing).
* static inline function doesn't satisfy it. */
#define paravirt_ssm(mask) \
do { \
if ((mask) == IA64_PSR_I) \
pv_cpu_ops.ssm_i(); \
paravirt_ssm_i(); \
else \
ia64_native_ssm(mask); \
} while (0)
@ -73,7 +79,7 @@ extern unsigned long ia64_native_getreg_func(int regnum);
#define paravirt_rsm(mask) \
do { \
if ((mask) == IA64_PSR_I) \
pv_cpu_ops.rsm_i(); \
paravirt_rsm_i(); \
else \
ia64_native_rsm(mask); \
} while (0)
@ -86,7 +92,7 @@ extern unsigned long ia64_native_getreg_func(int regnum);
if ((reg) == _IA64_REG_IP) \
res = ia64_native_getreg(_IA64_REG_IP); \
else \
res = pv_cpu_ops.getreg(reg); \
res = __paravirt_getreg(reg); \
res; \
})
@ -112,6 +118,12 @@ void paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch);
#endif /* CONFIG_PARAVIRT */
#if defined(CONFIG_PARAVIRT) && defined(ASM_SUPPORTED)
#define paravirt_dv_serialize_data() ia64_dv_serialize_data()
#else
#define paravirt_dv_serialize_data() /* nothing */
#endif
/* these routines utilize privilege-sensitive or performance-sensitive
* privileged instructions so the code must be replaced with
* paravirtualized versions */
@ -121,4 +133,349 @@ void paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch);
IA64_PARAVIRT_ASM_FUNC(work_processed_syscall)
#define ia64_leave_kernel IA64_PARAVIRT_ASM_FUNC(leave_kernel)
#if defined(CONFIG_PARAVIRT)
/******************************************************************************
* binary patching infrastructure
*/
#define PARAVIRT_PATCH_TYPE_FC 1
#define PARAVIRT_PATCH_TYPE_THASH 2
#define PARAVIRT_PATCH_TYPE_GET_CPUID 3
#define PARAVIRT_PATCH_TYPE_GET_PMD 4
#define PARAVIRT_PATCH_TYPE_PTCGA 5
#define PARAVIRT_PATCH_TYPE_GET_RR 6
#define PARAVIRT_PATCH_TYPE_SET_RR 7
#define PARAVIRT_PATCH_TYPE_SET_RR0_TO_RR4 8
#define PARAVIRT_PATCH_TYPE_SSM_I 9
#define PARAVIRT_PATCH_TYPE_RSM_I 10
#define PARAVIRT_PATCH_TYPE_GET_PSR_I 11
#define PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE 12
/* PARAVIRT_PATY_TYPE_[GS]ETREG + _IA64_REG_xxx */
#define PARAVIRT_PATCH_TYPE_GETREG 0x10000000
#define PARAVIRT_PATCH_TYPE_SETREG 0x20000000
/*
* struct task_struct* (*ia64_switch_to)(void* next_task);
* void *ia64_leave_syscall;
* void *ia64_work_processed_syscall
* void *ia64_leave_kernel;
*/
#define PARAVIRT_PATCH_TYPE_BR_START 0x30000000
#define PARAVIRT_PATCH_TYPE_BR_SWITCH_TO \
(PARAVIRT_PATCH_TYPE_BR_START + 0)
#define PARAVIRT_PATCH_TYPE_BR_LEAVE_SYSCALL \
(PARAVIRT_PATCH_TYPE_BR_START + 1)
#define PARAVIRT_PATCH_TYPE_BR_WORK_PROCESSED_SYSCALL \
(PARAVIRT_PATCH_TYPE_BR_START + 2)
#define PARAVIRT_PATCH_TYPE_BR_LEAVE_KERNEL \
(PARAVIRT_PATCH_TYPE_BR_START + 3)
#ifdef ASM_SUPPORTED
#include <asm/paravirt_patch.h>
/*
* pv_cpu_ops calling stub.
* normal function call convension can't be written by gcc
* inline assembly.
*
* from the caller's point of view,
* the following registers will be clobbered.
* r2, r3
* r8-r15
* r16, r17
* b6, b7
* p6-p15
* ar.ccv
*
* from the callee's point of view ,
* the following registers can be used.
* r2, r3: scratch
* r8: scratch, input argument0 and return value
* r0-r15: scratch, input argument1-5
* b6: return pointer
* b7: scratch
* p6-p15: scratch
* ar.ccv: scratch
*
* other registers must not be changed. especially
* b0: rp: preserved. gcc ignores b0 in clobbered register.
* r16: saved gp
*/
/* 5 bundles */
#define __PARAVIRT_BR \
";;\n" \
"{ .mlx\n" \
"nop 0\n" \
"movl r2 = %[op_addr]\n"/* get function pointer address */ \
";;\n" \
"}\n" \
"1:\n" \
"{ .mii\n" \
"ld8 r2 = [r2]\n" /* load function descriptor address */ \
"mov r17 = ip\n" /* get ip to calc return address */ \
"mov r16 = gp\n" /* save gp */ \
";;\n" \
"}\n" \
"{ .mii\n" \
"ld8 r3 = [r2], 8\n" /* load entry address */ \
"adds r17 = 1f - 1b, r17\n" /* calculate return address */ \
";;\n" \
"mov b7 = r3\n" /* set entry address */ \
"}\n" \
"{ .mib\n" \
"ld8 gp = [r2]\n" /* load gp value */ \
"mov b6 = r17\n" /* set return address */ \
"br.cond.sptk.few b7\n" /* intrinsics are very short isns */ \
"}\n" \
"1:\n" \
"{ .mii\n" \
"mov gp = r16\n" /* restore gp value */ \
"nop 0\n" \
"nop 0\n" \
";;\n" \
"}\n"
#define PARAVIRT_OP(op) \
[op_addr] "i"(&pv_cpu_ops.op)
#define PARAVIRT_TYPE(type) \
PARAVIRT_PATCH_TYPE_ ## type
#define PARAVIRT_REG_CLOBBERS0 \
"r2", "r3", /*"r8",*/ "r9", "r10", "r11", "r14", \
"r15", "r16", "r17"
#define PARAVIRT_REG_CLOBBERS1 \
"r2","r3", /*"r8",*/ "r9", "r10", "r11", "r14", \
"r15", "r16", "r17"
#define PARAVIRT_REG_CLOBBERS2 \
"r2", "r3", /*"r8", "r9",*/ "r10", "r11", "r14", \
"r15", "r16", "r17"
#define PARAVIRT_REG_CLOBBERS5 \
"r2", "r3", /*"r8", "r9", "r10", "r11", "r14",*/ \
"r15", "r16", "r17"
#define PARAVIRT_BR_CLOBBERS \
"b6", "b7"
#define PARAVIRT_PR_CLOBBERS \
"p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15"
#define PARAVIRT_AR_CLOBBERS \
"ar.ccv"
#define PARAVIRT_CLOBBERS0 \
PARAVIRT_REG_CLOBBERS0, \
PARAVIRT_BR_CLOBBERS, \
PARAVIRT_PR_CLOBBERS, \
PARAVIRT_AR_CLOBBERS, \
"memory"
#define PARAVIRT_CLOBBERS1 \
PARAVIRT_REG_CLOBBERS1, \
PARAVIRT_BR_CLOBBERS, \
PARAVIRT_PR_CLOBBERS, \
PARAVIRT_AR_CLOBBERS, \
"memory"
#define PARAVIRT_CLOBBERS2 \
PARAVIRT_REG_CLOBBERS2, \
PARAVIRT_BR_CLOBBERS, \
PARAVIRT_PR_CLOBBERS, \
PARAVIRT_AR_CLOBBERS, \
"memory"
#define PARAVIRT_CLOBBERS5 \
PARAVIRT_REG_CLOBBERS5, \
PARAVIRT_BR_CLOBBERS, \
PARAVIRT_PR_CLOBBERS, \
PARAVIRT_AR_CLOBBERS, \
"memory"
#define PARAVIRT_BR0(op, type) \
register unsigned long ia64_clobber asm ("r8"); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_clobber) \
: PARAVIRT_OP(op) \
: PARAVIRT_CLOBBERS0)
#define PARAVIRT_BR0_RET(op, type) \
register unsigned long ia64_intri_res asm ("r8"); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_intri_res) \
: PARAVIRT_OP(op) \
: PARAVIRT_CLOBBERS0)
#define PARAVIRT_BR1(op, type, arg1) \
register unsigned long __##arg1 asm ("r8") = arg1; \
register unsigned long ia64_clobber asm ("r8"); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_clobber) \
: PARAVIRT_OP(op), "0"(__##arg1) \
: PARAVIRT_CLOBBERS1)
#define PARAVIRT_BR1_RET(op, type, arg1) \
register unsigned long ia64_intri_res asm ("r8"); \
register unsigned long __##arg1 asm ("r8") = arg1; \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_intri_res) \
: PARAVIRT_OP(op), "0"(__##arg1) \
: PARAVIRT_CLOBBERS1)
#define PARAVIRT_BR1_VOID(op, type, arg1) \
register void *__##arg1 asm ("r8") = arg1; \
register unsigned long ia64_clobber asm ("r8"); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_clobber) \
: PARAVIRT_OP(op), "0"(__##arg1) \
: PARAVIRT_CLOBBERS1)
#define PARAVIRT_BR2(op, type, arg1, arg2) \
register unsigned long __##arg1 asm ("r8") = arg1; \
register unsigned long __##arg2 asm ("r9") = arg2; \
register unsigned long ia64_clobber1 asm ("r8"); \
register unsigned long ia64_clobber2 asm ("r9"); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(type)) \
: "=r"(ia64_clobber1), "=r"(ia64_clobber2) \
: PARAVIRT_OP(op), "0"(__##arg1), "1"(__##arg2) \
: PARAVIRT_CLOBBERS2)
#define PARAVIRT_DEFINE_CPU_OP0(op, type) \
static inline void \
paravirt_ ## op (void) \
{ \
PARAVIRT_BR0(op, type); \
}
#define PARAVIRT_DEFINE_CPU_OP0_RET(op, type) \
static inline unsigned long \
paravirt_ ## op (void) \
{ \
PARAVIRT_BR0_RET(op, type); \
return ia64_intri_res; \
}
#define PARAVIRT_DEFINE_CPU_OP1_VOID(op, type) \
static inline void \
paravirt_ ## op (void *arg1) \
{ \
PARAVIRT_BR1_VOID(op, type, arg1); \
}
#define PARAVIRT_DEFINE_CPU_OP1(op, type) \
static inline void \
paravirt_ ## op (unsigned long arg1) \
{ \
PARAVIRT_BR1(op, type, arg1); \
}
#define PARAVIRT_DEFINE_CPU_OP1_RET(op, type) \
static inline unsigned long \
paravirt_ ## op (unsigned long arg1) \
{ \
PARAVIRT_BR1_RET(op, type, arg1); \
return ia64_intri_res; \
}
#define PARAVIRT_DEFINE_CPU_OP2(op, type) \
static inline void \
paravirt_ ## op (unsigned long arg1, \
unsigned long arg2) \
{ \
PARAVIRT_BR2(op, type, arg1, arg2); \
}
PARAVIRT_DEFINE_CPU_OP1_VOID(fc, FC);
PARAVIRT_DEFINE_CPU_OP1_RET(thash, THASH)
PARAVIRT_DEFINE_CPU_OP1_RET(get_cpuid, GET_CPUID)
PARAVIRT_DEFINE_CPU_OP1_RET(get_pmd, GET_PMD)
PARAVIRT_DEFINE_CPU_OP2(ptcga, PTCGA)
PARAVIRT_DEFINE_CPU_OP1_RET(get_rr, GET_RR)
PARAVIRT_DEFINE_CPU_OP2(set_rr, SET_RR)
PARAVIRT_DEFINE_CPU_OP0(ssm_i, SSM_I)
PARAVIRT_DEFINE_CPU_OP0(rsm_i, RSM_I)
PARAVIRT_DEFINE_CPU_OP0_RET(get_psr_i, GET_PSR_I)
PARAVIRT_DEFINE_CPU_OP1(intrin_local_irq_restore, INTRIN_LOCAL_IRQ_RESTORE)
static inline void
paravirt_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
unsigned long val2, unsigned long val3,
unsigned long val4)
{
register unsigned long __val0 asm ("r8") = val0;
register unsigned long __val1 asm ("r9") = val1;
register unsigned long __val2 asm ("r10") = val2;
register unsigned long __val3 asm ("r11") = val3;
register unsigned long __val4 asm ("r14") = val4;
register unsigned long ia64_clobber0 asm ("r8");
register unsigned long ia64_clobber1 asm ("r9");
register unsigned long ia64_clobber2 asm ("r10");
register unsigned long ia64_clobber3 asm ("r11");
register unsigned long ia64_clobber4 asm ("r14");
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR,
PARAVIRT_TYPE(SET_RR0_TO_RR4))
: "=r"(ia64_clobber0),
"=r"(ia64_clobber1),
"=r"(ia64_clobber2),
"=r"(ia64_clobber3),
"=r"(ia64_clobber4)
: PARAVIRT_OP(set_rr0_to_rr4),
"0"(__val0), "1"(__val1), "2"(__val2),
"3"(__val3), "4"(__val4)
: PARAVIRT_CLOBBERS5);
}
/* unsigned long paravirt_getreg(int reg) */
#define __paravirt_getreg(reg) \
({ \
register unsigned long ia64_intri_res asm ("r8"); \
register unsigned long __reg asm ("r8") = (reg); \
\
BUILD_BUG_ON(!__builtin_constant_p(reg)); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(GETREG) \
+ (reg)) \
: "=r"(ia64_intri_res) \
: PARAVIRT_OP(getreg), "0"(__reg) \
: PARAVIRT_CLOBBERS1); \
\
ia64_intri_res; \
})
/* void paravirt_setreg(int reg, unsigned long val) */
#define paravirt_setreg(reg, val) \
do { \
register unsigned long __val asm ("r8") = val; \
register unsigned long __reg asm ("r9") = reg; \
register unsigned long ia64_clobber1 asm ("r8"); \
register unsigned long ia64_clobber2 asm ("r9"); \
\
BUILD_BUG_ON(!__builtin_constant_p(reg)); \
asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
PARAVIRT_TYPE(SETREG) \
+ (reg)) \
: "=r"(ia64_clobber1), \
"=r"(ia64_clobber2) \
: PARAVIRT_OP(setreg), \
"1"(__reg), "0"(__val) \
: PARAVIRT_CLOBBERS2); \
} while (0)
#endif /* ASM_SUPPORTED */
#endif /* CONFIG_PARAVIRT && ASM_SUPPOTED */
#endif /* _ASM_IA64_PARAVIRT_PRIVOP_H */

1
arch/ia64/include/asm/timex.h
View File

@ -40,5 +40,6 @@ get_cycles (void)
}
extern void ia64_cpu_local_tick (void);
extern unsigned long long ia64_native_sched_clock (void);
#endif /* _ASM_IA64_TIMEX_H */

39
arch/ia64/include/asm/xen/hypervisor.h
View File

@ -33,9 +33,6 @@
#ifndef _ASM_IA64_XEN_HYPERVISOR_H
#define _ASM_IA64_XEN_HYPERVISOR_H
#ifdef CONFIG_XEN
#include <linux/init.h>
#include <xen/interface/xen.h>
#include <xen/interface/version.h> /* to compile feature.c */
#include <xen/features.h> /* to comiple xen-netfront.c */
@ -43,22 +40,32 @@
/* xen_domain_type is set before executing any C code by early_xen_setup */
enum xen_domain_type {
XEN_NATIVE,
XEN_PV_DOMAIN,
XEN_HVM_DOMAIN,
XEN_NATIVE, /* running on bare hardware */
XEN_PV_DOMAIN, /* running in a PV domain */
XEN_HVM_DOMAIN, /* running in a Xen hvm domain*/
};
#ifdef CONFIG_XEN
extern enum xen_domain_type xen_domain_type;
#else
#define xen_domain_type XEN_NATIVE
#endif
#define xen_domain() (xen_domain_type != XEN_NATIVE)
#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
#define xen_initial_domain() (xen_pv_domain() && \
#define xen_pv_domain() (xen_domain() && \
xen_domain_type == XEN_PV_DOMAIN)
#define xen_hvm_domain() (xen_domain() && \
xen_domain_type == XEN_HVM_DOMAIN)
#ifdef CONFIG_XEN_DOM0
#define xen_initial_domain() (xen_pv_domain() && \
(xen_start_info->flags & SIF_INITDOMAIN))
#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
#else
#define xen_initial_domain() (0)
#endif
/* deprecated. remove this */
#define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
#ifdef CONFIG_XEN
extern struct shared_info *HYPERVISOR_shared_info;
extern struct start_info *xen_start_info;
@ -74,16 +81,6 @@ void force_evtchn_callback(void);
/* For setup_arch() in arch/ia64/kernel/setup.c */
void xen_ia64_enable_opt_feature(void);
#else /* CONFIG_XEN */
#define xen_domain() (0)
#define xen_pv_domain() (0)
#define xen_initial_domain() (0)
#define xen_hvm_domain() (0)
#define is_running_on_xen() (0) /* deprecated. remove this */
#endif
#define is_initial_xendomain() (0) /* deprecated. remove this */
#endif /* _ASM_IA64_XEN_HYPERVISOR_H */

28
arch/ia64/include/asm/xen/inst.h
View File

@ -33,6 +33,9 @@
#define __paravirt_work_processed_syscall_target \
xen_work_processed_syscall
#define paravirt_fsyscall_table xen_fsyscall_table
#define paravirt_fsys_bubble_down xen_fsys_bubble_down
#define MOV_FROM_IFA(reg) \
movl reg = XSI_IFA; \
;; \
@ -110,6 +113,27 @@
.endm
#define MOV_FROM_PSR(pred, reg, clob) __MOV_FROM_PSR pred, reg, clob
/* assuming ar.itc is read with interrupt disabled. */
#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
(pred) movl clob = XSI_ITC_OFFSET; \
;; \
(pred) ld8 clob = [clob]; \
(pred) mov reg = ar.itc; \
;; \
(pred) add reg = reg, clob; \
;; \
(pred) movl clob = XSI_ITC_LAST; \
;; \
(pred) ld8 clob = [clob]; \
;; \
(pred) cmp.geu.unc pred_clob, p0 = clob, reg; \
;; \
(pred_clob) add reg = 1, clob; \
;; \
(pred) movl clob = XSI_ITC_LAST; \
;; \
(pred) st8 [clob] = reg
#define MOV_TO_IFA(reg, clob) \
movl clob = XSI_IFA; \
@ -362,6 +386,10 @@
#define RSM_PSR_DT \
XEN_HYPER_RSM_PSR_DT
#define RSM_PSR_BE_I(clob0, clob1) \
RSM_PSR_I(p0, clob0, clob1); \
rum psr.be
#define SSM_PSR_DT_AND_SRLZ_I \
XEN_HYPER_SSM_PSR_DT

9
arch/ia64/include/asm/xen/interface.h
View File

@ -209,6 +209,15 @@ struct mapped_regs {
unsigned long krs[8]; /* kernel registers */
unsigned long tmp[16]; /* temp registers
(e.g. for hyperprivops) */
/* itc paravirtualization
* vAR.ITC = mAR.ITC + itc_offset
* itc_last is one which was lastly passed to
* the guest OS in order to prevent it from
* going backwords.
*/
unsigned long itc_offset;
unsigned long itc_last;
};
};
};

11
arch/ia64/include/asm/xen/minstate.h
View File

@ -1,3 +1,12 @@
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
/* read ar.itc in advance, and use it before leaving bank 0 */
#define XEN_ACCOUNT_GET_STAMP \
MOV_FROM_ITC(pUStk, p6, r20, r2);
#else
#define XEN_ACCOUNT_GET_STAMP
#endif
/*
* DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
* the minimum state necessary that allows us to turn psr.ic back
@ -123,7 +132,7 @@
;; \
.mem.offset 0,0; st8.spill [r16]=r2,16; \
.mem.offset 8,0; st8.spill [r17]=r3,16; \
ACCOUNT_GET_STAMP \
XEN_ACCOUNT_GET_STAMP \
adds r2=IA64_PT_REGS_R16_OFFSET,r1; \
;; \
EXTRA; \

38
arch/ia64/include/asm/xen/patchlist.h 100644
View File

@ -0,0 +1,38 @@
/******************************************************************************
* arch/ia64/include/asm/xen/patchlist.h
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#define __paravirt_start_gate_fsyscall_patchlist \
__xen_start_gate_fsyscall_patchlist
#define __paravirt_end_gate_fsyscall_patchlist \
__xen_end_gate_fsyscall_patchlist
#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
__xen_start_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
__xen_end_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_start_gate_vtop_patchlist \
__xen_start_gate_vtop_patchlist
#define __paravirt_end_gate_vtop_patchlist \
__xen_end_gate_vtop_patchlist
#define __paravirt_start_gate_mckinley_e9_patchlist \
__xen_start_gate_mckinley_e9_patchlist
#define __paravirt_end_gate_mckinley_e9_patchlist \
__xen_end_gate_mckinley_e9_patchlist

8
arch/ia64/include/asm/xen/privop.h
View File

@ -55,6 +55,8 @@
#define XSI_BANK1_R16 (XSI_BASE + XSI_BANK1_R16_OFS)
#define XSI_BANKNUM (XSI_BASE + XSI_BANKNUM_OFS)
#define XSI_IHA (XSI_BASE + XSI_IHA_OFS)
#define XSI_ITC_OFFSET (XSI_BASE + XSI_ITC_OFFSET_OFS)
#define XSI_ITC_LAST (XSI_BASE + XSI_ITC_LAST_OFS)
#endif
#ifndef __ASSEMBLY__
@ -67,7 +69,7 @@
* may have different semantics depending on whether they are executed
* at PL0 vs PL!=0. When paravirtualized, these instructions mustn't
* be allowed to execute directly, lest incorrect semantics result. */
extern void xen_fc(unsigned long addr);
extern void xen_fc(void *addr);
extern unsigned long xen_thash(unsigned long addr);
/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
@ -80,8 +82,10 @@ extern unsigned long xen_thash(unsigned long addr);
extern unsigned long xen_get_cpuid(int index);
extern unsigned long xen_get_pmd(int index);
#ifndef ASM_SUPPORTED
extern unsigned long xen_get_eflag(void); /* see xen_ia64_getreg */
extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */
#endif
/************************************************/
/* Instructions paravirtualized for performance */
@ -106,6 +110,7 @@ extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */
#define xen_get_virtual_pend() \
(*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1))
#ifndef ASM_SUPPORTED
/* Although all privileged operations can be left to trap and will
* be properly handled by Xen, some are frequent enough that we use
* hyperprivops for performance. */
@ -123,6 +128,7 @@ extern void xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
unsigned long val4);
extern void xen_set_kr(unsigned long index, unsigned long val);
extern void xen_ptcga(unsigned long addr, unsigned long size);
#endif /* !ASM_SUPPORTED */
#endif /* !__ASSEMBLY__ */

39
arch/ia64/kernel/Makefile
View File

@ -5,7 +5,7 @@
extra-y := head.o init_task.o vmlinux.lds
obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \
irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o \
irq_lsapic.o ivt.o machvec.o pal.o paravirt_patchlist.o patch.o process.o perfmon.o ptrace.o sal.o \
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o
@ -36,7 +36,8 @@ obj-$(CONFIG_PCI_MSI) += msi_ia64.o
mca_recovery-y += mca_drv.o mca_drv_asm.o
obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o
obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o \
paravirt_patch.o
obj-$(CONFIG_IA64_ESI) += esi.o
ifneq ($(CONFIG_IA64_ESI),)
@ -45,35 +46,13 @@ endif
obj-$(CONFIG_DMAR) += pci-dma.o
obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
# The gate DSO image is built using a special linker script.
targets += gate.so gate-syms.o
extra-y += gate.so gate-syms.o gate.lds gate.o
# fp_emulate() expects f2-f5,f16-f31 to contain the user-level state.
CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31
CPPFLAGS_gate.lds := -P -C -U$(ARCH)
quiet_cmd_gate = GATE $@
cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)
$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
$(call if_changed,gate)
$(obj)/built-in.o: $(obj)/gate-syms.o
$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
GATECFLAGS_gate-syms.o = -r
$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
$(call if_changed,gate)
# gate-data.o contains the gate DSO image as data in section .data.gate.
# We must build gate.so before we can assemble it.
# Note: kbuild does not track this dependency due to usage of .incbin
$(obj)/gate-data.o: $(obj)/gate.so
# The gate DSO image is built using a special linker script.
include $(srctree)/arch/ia64/kernel/Makefile.gate
# tell compiled for native
CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE
# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config
define sed-y
@ -109,9 +88,9 @@ include/asm-ia64/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s
clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
#
# native ivt.S and entry.S
# native ivt.S, entry.S and fsys.S
#
ASM_PARAVIRT_OBJS = ivt.o entry.o
ASM_PARAVIRT_OBJS = ivt.o entry.o fsys.o
define paravirtualized_native
AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK

27
arch/ia64/kernel/Makefile.gate 100644
View File

@ -0,0 +1,27 @@
# The gate DSO image is built using a special linker script.
targets += gate.so gate-syms.o
extra-y += gate.so gate-syms.o gate.lds gate.o
CPPFLAGS_gate.lds := -P -C -U$(ARCH)
quiet_cmd_gate = GATE $@
cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)
$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
$(call if_changed,gate)
$(obj)/built-in.o: $(obj)/gate-syms.o
$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
GATECFLAGS_gate-syms.o = -r
$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
$(call if_changed,gate)
# gate-data.o contains the gate DSO image as data in section .data.gate.
# We must build gate.so before we can assemble it.
# Note: kbuild does not track this dependency due to usage of .incbin
$(obj)/gate-data.o: $(obj)/gate.so

2
arch/ia64/kernel/asm-offsets.c
View File

@ -316,5 +316,7 @@ void foo(void)
DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
DEFINE_MAPPED_REG_OFS(XSI_ITC_OFFSET_OFS, itc_offset);
DEFINE_MAPPED_REG_OFS(XSI_ITC_LAST_OFS, itc_last);
#endif /* CONFIG_XEN */
}

1
arch/ia64/kernel/efi.c
View File

@ -456,6 +456,7 @@ efi_map_pal_code (void)
GRANULEROUNDDOWN((unsigned long) pal_vaddr),
pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)),
IA64_GRANULE_SHIFT);
paravirt_dv_serialize_data();
ia64_set_psr(psr); /* restore psr */
}

4
arch/ia64/kernel/entry.S
View File

@ -735,7 +735,7 @@ GLOBAL_ENTRY(__paravirt_leave_syscall)
__paravirt_work_processed_syscall:
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
adds r2=PT(LOADRS)+16,r12
(pUStk) mov.m r22=ar.itc // fetch time at leave
MOV_FROM_ITC(pUStk, p9, r22, r19) // fetch time at leave
adds r18=TI_FLAGS+IA64_TASK_SIZE,r13
;;
(p6) ld4 r31=[r18] // load current_thread_info()->flags
@ -984,7 +984,7 @@ GLOBAL_ENTRY(__paravirt_leave_kernel)
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
.pred.rel.mutex pUStk,pKStk
MOV_FROM_PSR(pKStk, r22, r29) // M2 read PSR now that interrupts are disabled
(pUStk) mov.m r22=ar.itc // M fetch time at leave
MOV_FROM_ITC(pUStk, p9, r22, r29) // M fetch time at leave
nop.i 0
;;
#else

35
arch/ia64/kernel/fsys.S
View File

@ -25,6 +25,7 @@
#include <asm/unistd.h>
#include "entry.h"
#include "paravirt_inst.h"
/*
* See Documentation/ia64/fsys.txt for details on fsyscalls.
@ -279,7 +280,7 @@ ENTRY(fsys_gettimeofday)
(p9) cmp.eq p13,p0 = 0,r30 // if mmio_ptr, clear p13 jitter control
;;
.pred.rel.mutex p8,p9
(p8) mov r2 = ar.itc // CPU_TIMER. 36 clocks latency!!!
MOV_FROM_ITC(p8, p6, r2, r10) // CPU_TIMER. 36 clocks latency!!!
(p9) ld8 r2 = [r30] // MMIO_TIMER. Could also have latency issues..
(p13) ld8 r25 = [r19] // get itc_lastcycle value
ld8 r9 = [r22],IA64_TIMESPEC_TV_NSEC_OFFSET // tv_sec
@ -418,7 +419,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
mov r17=(1 << (SIGKILL - 1)) | (1 << (SIGSTOP - 1))
;;
rsm psr.i // mask interrupt delivery
RSM_PSR_I(p0, r18, r19) // mask interrupt delivery
mov ar.ccv=0
andcm r14=r14,r17 // filter out SIGKILL & SIGSTOP
@ -491,7 +492,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
#ifdef CONFIG_SMP
st4.rel [r31]=r0 // release the lock
#endif
ssm psr.i
SSM_PSR_I(p0, p9, r31)
;;
srlz.d // ensure psr.i is set again
@ -513,7 +514,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
#ifdef CONFIG_SMP
st4.rel [r31]=r0 // release the lock
#endif
ssm psr.i
SSM_PSR_I(p0, p9, r17)
;;
srlz.d
br.sptk.many fsys_fallback_syscall // with signal pending, do the heavy-weight syscall
@ -521,7 +522,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
#ifdef CONFIG_SMP
.lock_contention:
/* Rather than spinning here, fall back on doing a heavy-weight syscall. */
ssm psr.i
SSM_PSR_I(p0, p9, r17)
;;
srlz.d
br.sptk.many fsys_fallback_syscall
@ -592,17 +593,17 @@ ENTRY(fsys_fallback_syscall)
adds r17=-1024,r15
movl r14=sys_call_table
;;
rsm psr.i
RSM_PSR_I(p0, r26, r27)
shladd r18=r17,3,r14
;;
ld8 r18=[r18] // load normal (heavy-weight) syscall entry-point
mov r29=psr // read psr (12 cyc load latency)
MOV_FROM_PSR(p0, r29, r26) // read psr (12 cyc load latency)
mov r27=ar.rsc
mov r21=ar.fpsr
mov r26=ar.pfs
END(fsys_fallback_syscall)
/* FALL THROUGH */
GLOBAL_ENTRY(fsys_bubble_down)
GLOBAL_ENTRY(paravirt_fsys_bubble_down)
.prologue
.altrp b6
.body
@ -640,7 +641,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
*
* PSR.BE : already is turned off in __kernel_syscall_via_epc()
* PSR.AC : don't care (kernel normally turns PSR.AC on)
* PSR.I : already turned off by the time fsys_bubble_down gets
* PSR.I : already turned off by the time paravirt_fsys_bubble_down gets
* invoked
* PSR.DFL: always 0 (kernel never turns it on)
* PSR.DFH: don't care --- kernel never touches f32-f127 on its own
@ -650,7 +651,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
* PSR.DB : don't care --- kernel never enables kernel-level
* breakpoints
* PSR.TB : must be 0 already; if it wasn't zero on entry to
* __kernel_syscall_via_epc, the branch to fsys_bubble_down
* __kernel_syscall_via_epc, the branch to paravirt_fsys_bubble_down
* will trigger a taken branch; the taken-trap-handler then
* converts the syscall into a break-based system-call.
*/
@ -683,7 +684,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
;;
mov ar.rsc=0 // M2 set enforced lazy mode, pl 0, LE, loadrs=0
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mov.m r30=ar.itc // M get cycle for accounting
MOV_FROM_ITC(p0, p6, r30, r23) // M get cycle for accounting
#else
nop.m 0
#endif
@ -734,21 +735,21 @@ GLOBAL_ENTRY(fsys_bubble_down)
mov rp=r14 // I0 set the real return addr
and r3=_TIF_SYSCALL_TRACEAUDIT,r3 // A
;;
ssm psr.i // M2 we're on kernel stacks now, reenable irqs
SSM_PSR_I(p0, p6, r22) // M2 we're on kernel stacks now, reenable irqs
cmp.eq p8,p0=r3,r0 // A
(p10) br.cond.spnt.many ia64_ret_from_syscall // B return if bad call-frame or r15 is a NaT
nop.m 0
(p8) br.call.sptk.many b6=b6 // B (ignore return address)
br.cond.spnt ia64_trace_syscall // B
END(fsys_bubble_down)
END(paravirt_fsys_bubble_down)
.rodata
.align 8
.globl fsyscall_table
.globl paravirt_fsyscall_table
data8 fsys_bubble_down
fsyscall_table:
data8 paravirt_fsys_bubble_down
paravirt_fsyscall_table:
data8 fsys_ni_syscall
data8 0 // exit // 1025
data8 0 // read
@ -1033,4 +1034,4 @@ fsyscall_table:
// fill in zeros for the remaining entries
.zero:
.space fsyscall_table + 8*NR_syscalls - .zero, 0
.space paravirt_fsyscall_table + 8*NR_syscalls - .zero, 0

171
arch/ia64/kernel/gate.S
View File

@ -13,6 +13,7 @@
#include <asm/sigcontext.h>
#include <asm/system.h>
#include <asm/unistd.h>
#include "paravirt_inst.h"
/*
* We can't easily refer to symbols inside the kernel. To avoid full runtime relocation,
@ -48,87 +49,6 @@ GLOBAL_ENTRY(__kernel_syscall_via_break)
}
END(__kernel_syscall_via_break)
/*
* On entry:
* r11 = saved ar.pfs
* r15 = system call #
* b0 = saved return address
* b6 = return address
* On exit:
* r11 = saved ar.pfs
* r15 = system call #
* b0 = saved return address
* all other "scratch" registers: undefined
* all "preserved" registers: same as on entry
*/
GLOBAL_ENTRY(__kernel_syscall_via_epc)
.prologue
.altrp b6
.body
{
/*
* Note: the kernel cannot assume that the first two instructions in this
* bundle get executed. The remaining code must be safe even if
* they do not get executed.
*/
adds r17=-1024,r15 // A
mov r10=0 // A default to successful syscall execution
epc // B causes split-issue
}
;;
rsm psr.be | psr.i // M2 (5 cyc to srlz.d)
LOAD_FSYSCALL_TABLE(r14) // X
;;
mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
shladd r18=r17,3,r14 // A
mov r19=NR_syscalls-1 // A
;;
lfetch [r18] // M0|1
mov r29=psr // M2 (12 cyc)
// If r17 is a NaT, p6 will be zero
cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
;;
mov r21=ar.fpsr // M2 (12 cyc)
tnat.nz p10,p9=r15 // I0
mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
;;
srlz.d // M0 (forces split-issue) ensure PSR.BE==0
(p6) ld8 r18=[r18] // M0|1
nop.i 0
;;
nop.m 0
(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
nop.i 0
;;
(p8) ssm psr.i
(p6) mov b7=r18 // I0
(p8) br.dptk.many b7 // B
mov r27=ar.rsc // M2 (12 cyc)
/*
* brl.cond doesn't work as intended because the linker would convert this branch
* into a branch to a PLT. Perhaps there will be a way to avoid this with some
* future version of the linker. In the meantime, we just use an indirect branch
* instead.
*/
#ifdef CONFIG_ITANIUM
(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
;;
(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
;;
(p6) mov b7=r14
(p6) br.sptk.many b7
#else
BRL_COND_FSYS_BUBBLE_DOWN(p6)
#endif
ssm psr.i
mov r10=-1
(p10) mov r8=EINVAL
(p9) mov r8=ENOSYS
FSYS_RETURN
END(__kernel_syscall_via_epc)
# define ARG0_OFF (16 + IA64_SIGFRAME_ARG0_OFFSET)
# define ARG1_OFF (16 + IA64_SIGFRAME_ARG1_OFFSET)
# define ARG2_OFF (16 + IA64_SIGFRAME_ARG2_OFFSET)
@ -374,3 +294,92 @@ restore_rbs:
// invala not necessary as that will happen when returning to user-mode
br.cond.sptk back_from_restore_rbs
END(__kernel_sigtramp)
/*
* On entry:
* r11 = saved ar.pfs
* r15 = system call #
* b0 = saved return address
* b6 = return address
* On exit:
* r11 = saved ar.pfs
* r15 = system call #
* b0 = saved return address
* all other "scratch" registers: undefined
* all "preserved" registers: same as on entry
*/
GLOBAL_ENTRY(__kernel_syscall_via_epc)
.prologue
.altrp b6
.body
{
/*
* Note: the kernel cannot assume that the first two instructions in this
* bundle get executed. The remaining code must be safe even if
* they do not get executed.
*/
adds r17=-1024,r15 // A
mov r10=0 // A default to successful syscall execution
epc // B causes split-issue
}
;;
RSM_PSR_BE_I(r20, r22) // M2 (5 cyc to srlz.d)
LOAD_FSYSCALL_TABLE(r14) // X
;;
mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
shladd r18=r17,3,r14 // A
mov r19=NR_syscalls-1 // A
;;
lfetch [r18] // M0|1
MOV_FROM_PSR(p0, r29, r8) // M2 (12 cyc)
// If r17 is a NaT, p6 will be zero
cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
;;
mov r21=ar.fpsr // M2 (12 cyc)
tnat.nz p10,p9=r15 // I0
mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
;;
srlz.d // M0 (forces split-issue) ensure PSR.BE==0
(p6) ld8 r18=[r18] // M0|1
nop.i 0
;;
nop.m 0
(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
nop.i 0
;;
SSM_PSR_I(p8, p14, r25)
(p6) mov b7=r18 // I0
(p8) br.dptk.many b7 // B
mov r27=ar.rsc // M2 (12 cyc)
/*
* brl.cond doesn't work as intended because the linker would convert this branch
* into a branch to a PLT. Perhaps there will be a way to avoid this with some
* future version of the linker. In the meantime, we just use an indirect branch
* instead.
*/
#ifdef CONFIG_ITANIUM
(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
;;
(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
;;
(p6) mov b7=r14
(p6) br.sptk.many b7
#else
BRL_COND_FSYS_BUBBLE_DOWN(p6)
#endif
SSM_PSR_I(p0, p14, r10)
mov r10=-1
(p10) mov r8=EINVAL
(p9) mov r8=ENOSYS
FSYS_RETURN
#ifdef CONFIG_PARAVIRT
/*
* padd to make the size of this symbol constant
* independent of paravirtualization.
*/
.align PAGE_SIZE / 8
#endif
END(__kernel_syscall_via_epc)

17
arch/ia64/kernel/gate.lds.S
View File

@ -7,6 +7,7 @@
#include <asm/system.h>
#include "paravirt_patchlist.h"
SECTIONS
{
@ -33,21 +34,21 @@ SECTIONS
. = GATE_ADDR + 0x600;
.data.patch : {
__start_gate_mckinley_e9_patchlist = .;
__paravirt_start_gate_mckinley_e9_patchlist = .;
*(.data.patch.mckinley_e9)
__end_gate_mckinley_e9_patchlist = .;
__paravirt_end_gate_mckinley_e9_patchlist = .;
__start_gate_vtop_patchlist = .;
__paravirt_start_gate_vtop_patchlist = .;
*(.data.patch.vtop)
__end_gate_vtop_patchlist = .;
__paravirt_end_gate_vtop_patchlist = .;
__start_gate_fsyscall_patchlist = .;
__paravirt_start_gate_fsyscall_patchlist = .;
*(.data.patch.fsyscall_table)
__end_gate_fsyscall_patchlist = .;
__paravirt_end_gate_fsyscall_patchlist = .;
__start_gate_brl_fsys_bubble_down_patchlist = .;
__paravirt_start_gate_brl_fsys_bubble_down_patchlist = .;
*(.data.patch.brl_fsys_bubble_down)
__end_gate_brl_fsys_bubble_down_patchlist = .;
__paravirt_end_gate_brl_fsys_bubble_down_patchlist = .;
} :readable
.IA_64.unwind_info : { *(.IA_64.unwind_info*) }

10
arch/ia64/kernel/head.S
View File

@ -1050,7 +1050,7 @@ END(ia64_delay_loop)
* except that the multiplication and the shift are done with 128-bit
* intermediate precision so that we can produce a full 64-bit result.
*/
GLOBAL_ENTRY(sched_clock)
GLOBAL_ENTRY(ia64_native_sched_clock)
addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
mov.m r9=ar.itc // fetch cycle-counter (35 cyc)
;;
@ -1066,7 +1066,13 @@ GLOBAL_ENTRY(sched_clock)
;;
shrp r8=r9,r8,IA64_NSEC_PER_CYC_SHIFT
br.ret.sptk.many rp
END(sched_clock)
END(ia64_native_sched_clock)
#ifndef CONFIG_PARAVIRT
//unsigned long long
//sched_clock(void) __attribute__((alias("ia64_native_sched_clock")));
.global sched_clock
sched_clock = ia64_native_sched_clock
#endif
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
GLOBAL_ENTRY(cycle_to_cputime)

2
arch/ia64/kernel/ivt.S
View File

@ -804,7 +804,7 @@ ENTRY(break_fault)
///////////////////////////////////////////////////////////////////////
st1 [r16]=r0 // M2|3 clear current->thread.on_ustack flag
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
mov.m r30=ar.itc // M get cycle for accounting
MOV_FROM_ITC(p0, p14, r30, r18) // M get cycle for accounting
#else
mov b6=r30 // I0 setup syscall handler branch reg early
#endif

32
arch/ia64/kernel/module.c
View File

@ -446,6 +446,14 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
mod->arch.opd = s;
else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0)
mod->arch.unwind = s;
#ifdef CONFIG_PARAVIRT
else if (strcmp(".paravirt_bundles",
secstrings + s->sh_name) == 0)
mod->arch.paravirt_bundles = s;
else if (strcmp(".paravirt_insts",
secstrings + s->sh_name) == 0)
mod->arch.paravirt_insts = s;
#endif
if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) {
printk(KERN_ERR "%s: sections missing\n", mod->name);
@ -921,6 +929,30 @@ module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mo
DEBUGP("%s: init: entry=%p\n", __func__, mod->init);
if (mod->arch.unwind)
register_unwind_table(mod);
#ifdef CONFIG_PARAVIRT
if (mod->arch.paravirt_bundles) {
struct paravirt_patch_site_bundle *start =
(struct paravirt_patch_site_bundle *)
mod->arch.paravirt_bundles->sh_addr;
struct paravirt_patch_site_bundle *end =
(struct paravirt_patch_site_bundle *)
(mod->arch.paravirt_bundles->sh_addr +
mod->arch.paravirt_bundles->sh_size);
paravirt_patch_apply_bundle(start, end);
}
if (mod->arch.paravirt_insts) {
struct paravirt_patch_site_inst *start =
(struct paravirt_patch_site_inst *)
mod->arch.paravirt_insts->sh_addr;
struct paravirt_patch_site_inst *end =
(struct paravirt_patch_site_inst *)
(mod->arch.paravirt_insts->sh_addr +
mod->arch.paravirt_insts->sh_size);
paravirt_patch_apply_inst(start, end);
}
#endif
return 0;
}

539
arch/ia64/kernel/paravirt.c
View File

@ -46,13 +46,23 @@ struct pv_info pv_info = {
* initialization hooks.
*/
struct pv_init_ops pv_init_ops;
static void __init
ia64_native_patch_branch(unsigned long tag, unsigned long type);
struct pv_init_ops pv_init_ops =
{
#ifdef ASM_SUPPORTED
.patch_bundle = ia64_native_patch_bundle,
#endif
.patch_branch = ia64_native_patch_branch,
};
/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
*/
#ifndef ASM_SUPPORTED
/* ia64_native_xxx are macros so that we have to make them real functions */
#define DEFINE_VOID_FUNC1(name) \
@ -60,7 +70,14 @@ struct pv_init_ops pv_init_ops;
ia64_native_ ## name ## _func(unsigned long arg) \
{ \
ia64_native_ ## name(arg); \
} \
}
#define DEFINE_VOID_FUNC1_VOID(name) \
static void \
ia64_native_ ## name ## _func(void *arg) \
{ \
ia64_native_ ## name(arg); \
}
#define DEFINE_VOID_FUNC2(name) \
static void \
@ -68,7 +85,7 @@ struct pv_init_ops pv_init_ops;
unsigned long arg1) \
{ \
ia64_native_ ## name(arg0, arg1); \
} \
}
#define DEFINE_FUNC0(name) \
static unsigned long \
@ -84,7 +101,7 @@ struct pv_init_ops pv_init_ops;
return ia64_native_ ## name(arg); \
} \
DEFINE_VOID_FUNC1(fc);
DEFINE_VOID_FUNC1_VOID(fc);
DEFINE_VOID_FUNC1(intrin_local_irq_restore);
DEFINE_VOID_FUNC2(ptcga);
@ -274,6 +291,266 @@ ia64_native_setreg_func(int regnum, unsigned long val)
break;
}
}
#else
#define __DEFINE_FUNC(name, code) \
extern const char ia64_native_ ## name ## _direct_start[]; \
extern const char ia64_native_ ## name ## _direct_end[]; \
asm (".align 32\n" \
".proc ia64_native_" #name "_func\n" \
"ia64_native_" #name "_func:\n" \
"ia64_native_" #name "_direct_start:\n" \
code \
"ia64_native_" #name "_direct_end:\n" \
"br.cond.sptk.many b6\n" \
".endp ia64_native_" #name "_func\n")
#define DEFINE_VOID_FUNC0(name, code) \
extern void \
ia64_native_ ## name ## _func(void); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1(name, code) \
extern void \
ia64_native_ ## name ## _func(unsigned long arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1_VOID(name, code) \
extern void \
ia64_native_ ## name ## _func(void *arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC2(name, code) \
extern void \
ia64_native_ ## name ## _func(unsigned long arg0, \
unsigned long arg1); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC0(name, code) \
extern unsigned long \
ia64_native_ ## name ## _func(void); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC1(name, type, code) \
extern unsigned long \
ia64_native_ ## name ## _func(type arg); \
__DEFINE_FUNC(name, code)
DEFINE_VOID_FUNC1_VOID(fc,
"fc r8\n");
DEFINE_VOID_FUNC1(intrin_local_irq_restore,
";;\n"
" cmp.ne p6, p7 = r8, r0\n"
";;\n"
"(p6) ssm psr.i\n"
"(p7) rsm psr.i\n"
";;\n"
"(p6) srlz.d\n");
DEFINE_VOID_FUNC2(ptcga,
"ptc.ga r8, r9\n");
DEFINE_VOID_FUNC2(set_rr,
"mov rr[r8] = r9\n");
/* ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I */
DEFINE_FUNC0(get_psr_i,
"mov r2 = " __stringify(1 << IA64_PSR_I_BIT) "\n"
"mov r8 = psr\n"
";;\n"
"and r8 = r2, r8\n");
DEFINE_FUNC1(thash, unsigned long,
"thash r8 = r8\n");
DEFINE_FUNC1(get_cpuid, int,
"mov r8 = cpuid[r8]\n");
DEFINE_FUNC1(get_pmd, int,
"mov r8 = pmd[r8]\n");
DEFINE_FUNC1(get_rr, unsigned long,
"mov r8 = rr[r8]\n");
DEFINE_VOID_FUNC0(ssm_i,
"ssm psr.i\n");
DEFINE_VOID_FUNC0(rsm_i,
"rsm psr.i\n");
extern void
ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
unsigned long val2, unsigned long val3,
unsigned long val4);
__DEFINE_FUNC(set_rr0_to_rr4,
"mov rr[r0] = r8\n"
"movl r2 = 0x2000000000000000\n"
";;\n"
"mov rr[r2] = r9\n"
"shl r3 = r2, 1\n" /* movl r3 = 0x4000000000000000 */
";;\n"
"add r2 = r2, r3\n" /* movl r2 = 0x6000000000000000 */
"mov rr[r3] = r10\n"
";;\n"
"mov rr[r2] = r11\n"
"shl r3 = r3, 1\n" /* movl r3 = 0x8000000000000000 */
";;\n"
"mov rr[r3] = r14\n");
extern unsigned long ia64_native_getreg_func(int regnum);
asm(".global ia64_native_getreg_func\n");
#define __DEFINE_GET_REG(id, reg) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r8\n" \
";;\n" \
"(p6) mov r8 = " #reg "\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
#define __DEFINE_GET_AR(id, reg) __DEFINE_GET_REG(AR_ ## id, ar.reg)
#define __DEFINE_GET_CR(id, reg) __DEFINE_GET_REG(CR_ ## id, cr.reg)
__DEFINE_FUNC(getreg,
__DEFINE_GET_REG(GP, gp)
/*__DEFINE_GET_REG(IP, ip)*/ /* returned ip value shouldn't be constant */
__DEFINE_GET_REG(PSR, psr)
__DEFINE_GET_REG(TP, tp)
__DEFINE_GET_REG(SP, sp)
__DEFINE_GET_REG(AR_KR0, ar0)
__DEFINE_GET_REG(AR_KR1, ar1)
__DEFINE_GET_REG(AR_KR2, ar2)
__DEFINE_GET_REG(AR_KR3, ar3)
__DEFINE_GET_REG(AR_KR4, ar4)
__DEFINE_GET_REG(AR_KR5, ar5)
__DEFINE_GET_REG(AR_KR6, ar6)
__DEFINE_GET_REG(AR_KR7, ar7)
__DEFINE_GET_AR(RSC, rsc)
__DEFINE_GET_AR(BSP, bsp)
__DEFINE_GET_AR(BSPSTORE, bspstore)
__DEFINE_GET_AR(RNAT, rnat)
__DEFINE_GET_AR(FCR, fcr)
__DEFINE_GET_AR(EFLAG, eflag)
__DEFINE_GET_AR(CSD, csd)
__DEFINE_GET_AR(SSD, ssd)
__DEFINE_GET_REG(AR_CFLAG, ar27)
__DEFINE_GET_AR(FSR, fsr)
__DEFINE_GET_AR(FIR, fir)
__DEFINE_GET_AR(FDR, fdr)
__DEFINE_GET_AR(CCV, ccv)
__DEFINE_GET_AR(UNAT, unat)
__DEFINE_GET_AR(FPSR, fpsr)
__DEFINE_GET_AR(ITC, itc)
__DEFINE_GET_AR(PFS, pfs)
__DEFINE_GET_AR(LC, lc)
__DEFINE_GET_AR(EC, ec)
__DEFINE_GET_CR(DCR, dcr)
__DEFINE_GET_CR(ITM, itm)
__DEFINE_GET_CR(IVA, iva)
__DEFINE_GET_CR(PTA, pta)
__DEFINE_GET_CR(IPSR, ipsr)
__DEFINE_GET_CR(ISR, isr)
__DEFINE_GET_CR(IIP, iip)
__DEFINE_GET_CR(IFA, ifa)
__DEFINE_GET_CR(ITIR, itir)
__DEFINE_GET_CR(IIPA, iipa)
__DEFINE_GET_CR(IFS, ifs)
__DEFINE_GET_CR(IIM, iim)
__DEFINE_GET_CR(IHA, iha)
__DEFINE_GET_CR(LID, lid)
__DEFINE_GET_CR(IVR, ivr)
__DEFINE_GET_CR(TPR, tpr)
__DEFINE_GET_CR(EOI, eoi)
__DEFINE_GET_CR(IRR0, irr0)
__DEFINE_GET_CR(IRR1, irr1)
__DEFINE_GET_CR(IRR2, irr2)
__DEFINE_GET_CR(IRR3, irr3)
__DEFINE_GET_CR(ITV, itv)
__DEFINE_GET_CR(PMV, pmv)
__DEFINE_GET_CR(CMCV, cmcv)
__DEFINE_GET_CR(LRR0, lrr0)
__DEFINE_GET_CR(LRR1, lrr1)
"mov r8 = -1\n" /* unsupported case */
);
extern void ia64_native_setreg_func(int regnum, unsigned long val);
asm(".global ia64_native_setreg_func\n");
#define __DEFINE_SET_REG(id, reg) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r9\n" \
";;\n" \
"(p6) mov " #reg " = r8\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
#define __DEFINE_SET_AR(id, reg) __DEFINE_SET_REG(AR_ ## id, ar.reg)
#define __DEFINE_SET_CR(id, reg) __DEFINE_SET_REG(CR_ ## id, cr.reg)
__DEFINE_FUNC(setreg,
"mov r2 = " __stringify(_IA64_REG_PSR_L) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r9\n"
";;\n"
"(p6) mov psr.l = r8\n"
#ifdef HAVE_SERIALIZE_DIRECTIVE
".serialize.data\n"
#endif
"(p6) br.cond.sptk.many b6\n"
__DEFINE_SET_REG(GP, gp)
__DEFINE_SET_REG(SP, sp)
__DEFINE_SET_REG(AR_KR0, ar0)
__DEFINE_SET_REG(AR_KR1, ar1)
__DEFINE_SET_REG(AR_KR2, ar2)
__DEFINE_SET_REG(AR_KR3, ar3)
__DEFINE_SET_REG(AR_KR4, ar4)
__DEFINE_SET_REG(AR_KR5, ar5)
__DEFINE_SET_REG(AR_KR6, ar6)
__DEFINE_SET_REG(AR_KR7, ar7)
__DEFINE_SET_AR(RSC, rsc)
__DEFINE_SET_AR(BSP, bsp)
__DEFINE_SET_AR(BSPSTORE, bspstore)
__DEFINE_SET_AR(RNAT, rnat)
__DEFINE_SET_AR(FCR, fcr)
__DEFINE_SET_AR(EFLAG, eflag)
__DEFINE_SET_AR(CSD, csd)
__DEFINE_SET_AR(SSD, ssd)
__DEFINE_SET_REG(AR_CFLAG, ar27)
__DEFINE_SET_AR(FSR, fsr)
__DEFINE_SET_AR(FIR, fir)
__DEFINE_SET_AR(FDR, fdr)
__DEFINE_SET_AR(CCV, ccv)
__DEFINE_SET_AR(UNAT, unat)
__DEFINE_SET_AR(FPSR, fpsr)
__DEFINE_SET_AR(ITC, itc)
__DEFINE_SET_AR(PFS, pfs)
__DEFINE_SET_AR(LC, lc)
__DEFINE_SET_AR(EC, ec)
__DEFINE_SET_CR(DCR, dcr)
__DEFINE_SET_CR(ITM, itm)
__DEFINE_SET_CR(IVA, iva)
__DEFINE_SET_CR(PTA, pta)
__DEFINE_SET_CR(IPSR, ipsr)
__DEFINE_SET_CR(ISR, isr)
__DEFINE_SET_CR(IIP, iip)
__DEFINE_SET_CR(IFA, ifa)
__DEFINE_SET_CR(ITIR, itir)
__DEFINE_SET_CR(IIPA, iipa)
__DEFINE_SET_CR(IFS, ifs)
__DEFINE_SET_CR(IIM, iim)
__DEFINE_SET_CR(IHA, iha)
__DEFINE_SET_CR(LID, lid)
__DEFINE_SET_CR(IVR, ivr)
__DEFINE_SET_CR(TPR, tpr)
__DEFINE_SET_CR(EOI, eoi)
__DEFINE_SET_CR(IRR0, irr0)
__DEFINE_SET_CR(IRR1, irr1)
__DEFINE_SET_CR(IRR2, irr2)
__DEFINE_SET_CR(IRR3, irr3)
__DEFINE_SET_CR(ITV, itv)
__DEFINE_SET_CR(PMV, pmv)
__DEFINE_SET_CR(CMCV, cmcv)
__DEFINE_SET_CR(LRR0, lrr0)
__DEFINE_SET_CR(LRR1, lrr1)
);
#endif
struct pv_cpu_ops pv_cpu_ops = {
.fc = ia64_native_fc_func,
@ -366,4 +643,258 @@ ia64_native_do_steal_accounting(unsigned long *new_itm)
struct pv_time_ops pv_time_ops = {
.do_steal_accounting = ia64_native_do_steal_accounting,
.sched_clock = ia64_native_sched_clock,
};
/***************************************************************************
* binary pacthing
* pv_init_ops.patch_bundle
*/
#ifdef ASM_SUPPORTED
#define IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg) \
__DEFINE_FUNC(get_ ## name, \
";;\n" \
"mov r8 = " #reg "\n" \
";;\n")
#define IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
__DEFINE_FUNC(set_ ## name, \
";;\n" \
"mov " #reg " = r8\n" \
";;\n")
#define IA64_NATIVE_PATCH_DEFINE_REG(name, reg) \
IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg); \
IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
#define IA64_NATIVE_PATCH_DEFINE_AR(name, reg) \
IA64_NATIVE_PATCH_DEFINE_REG(ar_ ## name, ar.reg)
#define IA64_NATIVE_PATCH_DEFINE_CR(name, reg) \
IA64_NATIVE_PATCH_DEFINE_REG(cr_ ## name, cr.reg)
IA64_NATIVE_PATCH_DEFINE_GET_REG(psr, psr);
IA64_NATIVE_PATCH_DEFINE_GET_REG(tp, tp);
/* IA64_NATIVE_PATCH_DEFINE_SET_REG(psr_l, psr.l); */
__DEFINE_FUNC(set_psr_l,
";;\n"
"mov psr.l = r8\n"
#ifdef HAVE_SERIALIZE_DIRECTIVE
".serialize.data\n"
#endif
";;\n");
IA64_NATIVE_PATCH_DEFINE_REG(gp, gp);
IA64_NATIVE_PATCH_DEFINE_REG(sp, sp);
IA64_NATIVE_PATCH_DEFINE_REG(kr0, ar0);
IA64_NATIVE_PATCH_DEFINE_REG(kr1, ar1);
IA64_NATIVE_PATCH_DEFINE_REG(kr2, ar2);
IA64_NATIVE_PATCH_DEFINE_REG(kr3, ar3);
IA64_NATIVE_PATCH_DEFINE_REG(kr4, ar4);
IA64_NATIVE_PATCH_DEFINE_REG(kr5, ar5);
IA64_NATIVE_PATCH_DEFINE_REG(kr6, ar6);
IA64_NATIVE_PATCH_DEFINE_REG(kr7, ar7);
IA64_NATIVE_PATCH_DEFINE_AR(rsc, rsc);
IA64_NATIVE_PATCH_DEFINE_AR(bsp, bsp);
IA64_NATIVE_PATCH_DEFINE_AR(bspstore, bspstore);
IA64_NATIVE_PATCH_DEFINE_AR(rnat, rnat);
IA64_NATIVE_PATCH_DEFINE_AR(fcr, fcr);
IA64_NATIVE_PATCH_DEFINE_AR(eflag, eflag);
IA64_NATIVE_PATCH_DEFINE_AR(csd, csd);
IA64_NATIVE_PATCH_DEFINE_AR(ssd, ssd);
IA64_NATIVE_PATCH_DEFINE_REG(ar27, ar27);
IA64_NATIVE_PATCH_DEFINE_AR(fsr, fsr);
IA64_NATIVE_PATCH_DEFINE_AR(fir, fir);
IA64_NATIVE_PATCH_DEFINE_AR(fdr, fdr);
IA64_NATIVE_PATCH_DEFINE_AR(ccv, ccv);
IA64_NATIVE_PATCH_DEFINE_AR(unat, unat);
IA64_NATIVE_PATCH_DEFINE_AR(fpsr, fpsr);
IA64_NATIVE_PATCH_DEFINE_AR(itc, itc);
IA64_NATIVE_PATCH_DEFINE_AR(pfs, pfs);
IA64_NATIVE_PATCH_DEFINE_AR(lc, lc);
IA64_NATIVE_PATCH_DEFINE_AR(ec, ec);
IA64_NATIVE_PATCH_DEFINE_CR(dcr, dcr);
IA64_NATIVE_PATCH_DEFINE_CR(itm, itm);
IA64_NATIVE_PATCH_DEFINE_CR(iva, iva);
IA64_NATIVE_PATCH_DEFINE_CR(pta, pta);
IA64_NATIVE_PATCH_DEFINE_CR(ipsr, ipsr);
IA64_NATIVE_PATCH_DEFINE_CR(isr, isr);
IA64_NATIVE_PATCH_DEFINE_CR(iip, iip);
IA64_NATIVE_PATCH_DEFINE_CR(ifa, ifa);
IA64_NATIVE_PATCH_DEFINE_CR(itir, itir);
IA64_NATIVE_PATCH_DEFINE_CR(iipa, iipa);
IA64_NATIVE_PATCH_DEFINE_CR(ifs, ifs);
IA64_NATIVE_PATCH_DEFINE_CR(iim, iim);
IA64_NATIVE_PATCH_DEFINE_CR(iha, iha);
IA64_NATIVE_PATCH_DEFINE_CR(lid, lid);
IA64_NATIVE_PATCH_DEFINE_CR(ivr, ivr);
IA64_NATIVE_PATCH_DEFINE_CR(tpr, tpr);
IA64_NATIVE_PATCH_DEFINE_CR(eoi, eoi);
IA64_NATIVE_PATCH_DEFINE_CR(irr0, irr0);
IA64_NATIVE_PATCH_DEFINE_CR(irr1, irr1);
IA64_NATIVE_PATCH_DEFINE_CR(irr2, irr2);
IA64_NATIVE_PATCH_DEFINE_CR(irr3, irr3);
IA64_NATIVE_PATCH_DEFINE_CR(itv, itv);
IA64_NATIVE_PATCH_DEFINE_CR(pmv, pmv);
IA64_NATIVE_PATCH_DEFINE_CR(cmcv, cmcv);
IA64_NATIVE_PATCH_DEFINE_CR(lrr0, lrr0);
IA64_NATIVE_PATCH_DEFINE_CR(lrr1, lrr1);
static const struct paravirt_patch_bundle_elem ia64_native_patch_bundle_elems[]
__initdata_or_module =
{
#define IA64_NATIVE_PATCH_BUNDLE_ELEM(name, type) \
{ \
(void*)ia64_native_ ## name ## _direct_start, \
(void*)ia64_native_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_ ## type, \
}
IA64_NATIVE_PATCH_BUNDLE_ELEM(fc, FC),
IA64_NATIVE_PATCH_BUNDLE_ELEM(thash, THASH),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
IA64_NATIVE_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
IA64_NATIVE_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(intrin_local_irq_restore,
INTRIN_LOCAL_IRQ_RESTORE),
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
{ \
(void*)ia64_native_get_ ## name ## _direct_start, \
(void*)ia64_native_get_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
}
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
{ \
(void*)ia64_native_set_ ## name ## _direct_start, \
(void*)ia64_native_set_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
}
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg), \
IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar_ ## name, AR_ ## reg)
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(cr_ ## name, CR_ ## reg)
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(tp, TP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(psr_l, PSR_L),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(gp, GP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(sp, SP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr0, AR_KR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr1, AR_KR1),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr2, AR_KR2),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr3, AR_KR3),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr4, AR_KR4),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr5, AR_KR5),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr6, AR_KR6),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr7, AR_KR7),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rsc, RSC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bsp, BSP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bspstore, BSPSTORE),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rnat, RNAT),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fcr, FCR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(eflag, EFLAG),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(csd, CSD),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ssd, SSD),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar27, AR_CFLAG),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fsr, FSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fir, FIR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fdr, FDR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ccv, CCV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(unat, UNAT),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fpsr, FPSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(itc, ITC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(pfs, PFS),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(lc, LC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ec, EC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(dcr, DCR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itm, ITM),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iva, IVA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pta, PTA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ipsr, IPSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(isr, ISR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iip, IIP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifa, IFA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itir, ITIR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iipa, IIPA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifs, IFS),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iim, IIM),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iha, IHA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lid, LID),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ivr, IVR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(tpr, TPR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(eoi, EOI),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr0, IRR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr1, IRR1),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr2, IRR2),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr3, IRR3),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itv, ITV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pmv, PMV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(cmcv, CMCV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr0, LRR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr1, LRR1),
};
unsigned long __init_or_module
ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
{
const unsigned long nelems = sizeof(ia64_native_patch_bundle_elems) /
sizeof(ia64_native_patch_bundle_elems[0]);
return __paravirt_patch_apply_bundle(sbundle, ebundle, type,
ia64_native_patch_bundle_elems,
nelems, NULL);
}
#endif /* ASM_SUPPOTED */
extern const char ia64_native_switch_to[];
extern const char ia64_native_leave_syscall[];
extern const char ia64_native_work_processed_syscall[];
extern const char ia64_native_leave_kernel[];
const struct paravirt_patch_branch_target ia64_native_branch_target[]
__initconst = {
#define PARAVIRT_BR_TARGET(name, type) \
{ \
ia64_native_ ## name, \
PARAVIRT_PATCH_TYPE_BR_ ## type, \
}
PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
};
static void __init
ia64_native_patch_branch(unsigned long tag, unsigned long type)
{
const unsigned long nelem =
sizeof(ia64_native_branch_target) /
sizeof(ia64_native_branch_target[0]);
__paravirt_patch_apply_branch(tag, type,
ia64_native_branch_target, nelem);
}

514
arch/ia64/kernel/paravirt_patch.c 100644
View File

@ -0,0 +1,514 @@
/******************************************************************************
* linux/arch/ia64/xen/paravirt_patch.c
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/init.h>
#include <asm/intrinsics.h>
#include <asm/kprobes.h>
#include <asm/paravirt.h>
#include <asm/paravirt_patch.h>
typedef union ia64_inst {
struct {
unsigned long long qp : 6;
unsigned long long : 31;
unsigned long long opcode : 4;
unsigned long long reserved : 23;
} generic;
unsigned long long l;
} ia64_inst_t;
/*
* flush_icache_range() can't be used here.
* we are here before cpu_init() which initializes
* ia64_i_cache_stride_shift. flush_icache_range() uses it.
*/
void __init_or_module
paravirt_flush_i_cache_range(const void *instr, unsigned long size)
{
extern void paravirt_fc_i(const void *addr);
unsigned long i;
for (i = 0; i < size; i += sizeof(bundle_t))
paravirt_fc_i(instr + i);
}
bundle_t* __init_or_module
paravirt_get_bundle(unsigned long tag)
{
return (bundle_t *)(tag & ~3UL);
}
unsigned long __init_or_module
paravirt_get_slot(unsigned long tag)
{
return tag & 3UL;
}
unsigned long __init_or_module
paravirt_get_num_inst(unsigned long stag, unsigned long etag)
{
bundle_t *sbundle = paravirt_get_bundle(stag);
unsigned long sslot = paravirt_get_slot(stag);
bundle_t *ebundle = paravirt_get_bundle(etag);
unsigned long eslot = paravirt_get_slot(etag);
return (ebundle - sbundle) * 3 + eslot - sslot + 1;
}
unsigned long __init_or_module
paravirt_get_next_tag(unsigned long tag)
{
unsigned long slot = paravirt_get_slot(tag);
switch (slot) {
case 0:
case 1:
return tag + 1;
case 2: {
bundle_t *bundle = paravirt_get_bundle(tag);
return (unsigned long)(bundle + 1);
}
default:
BUG();
}
/* NOTREACHED */
}
ia64_inst_t __init_or_module
paravirt_read_slot0(const bundle_t *bundle)
{
ia64_inst_t inst;
inst.l = bundle->quad0.slot0;
return inst;
}
ia64_inst_t __init_or_module
paravirt_read_slot1(const bundle_t *bundle)
{
ia64_inst_t inst;
inst.l = bundle->quad0.slot1_p0 |
((unsigned long long)bundle->quad1.slot1_p1 << 18UL);
return inst;
}
ia64_inst_t __init_or_module
paravirt_read_slot2(const bundle_t *bundle)
{
ia64_inst_t inst;
inst.l = bundle->quad1.slot2;
return inst;
}
ia64_inst_t __init_or_module
paravirt_read_inst(unsigned long tag)
{
bundle_t *bundle = paravirt_get_bundle(tag);
unsigned long slot = paravirt_get_slot(tag);
switch (slot) {
case 0:
return paravirt_read_slot0(bundle);
case 1:
return paravirt_read_slot1(bundle);
case 2:
return paravirt_read_slot2(bundle);
default:
BUG();
}
/* NOTREACHED */
}
void __init_or_module
paravirt_write_slot0(bundle_t *bundle, ia64_inst_t inst)
{
bundle->quad0.slot0 = inst.l;
}
void __init_or_module
paravirt_write_slot1(bundle_t *bundle, ia64_inst_t inst)
{
bundle->quad0.slot1_p0 = inst.l;
bundle->quad1.slot1_p1 = inst.l >> 18UL;
}
void __init_or_module
paravirt_write_slot2(bundle_t *bundle, ia64_inst_t inst)
{
bundle->quad1.slot2 = inst.l;
}
void __init_or_module
paravirt_write_inst(unsigned long tag, ia64_inst_t inst)
{
bundle_t *bundle = paravirt_get_bundle(tag);
unsigned long slot = paravirt_get_slot(tag);
switch (slot) {
case 0:
paravirt_write_slot0(bundle, inst);
break;
case 1:
paravirt_write_slot1(bundle, inst);
break;
case 2:
paravirt_write_slot2(bundle, inst);
break;
default:
BUG();
break;
}
paravirt_flush_i_cache_range(bundle, sizeof(*bundle));
}
/* for debug */
void
paravirt_print_bundle(const bundle_t *bundle)
{
const unsigned long *quad = (const unsigned long *)bundle;
ia64_inst_t slot0 = paravirt_read_slot0(bundle);
ia64_inst_t slot1 = paravirt_read_slot1(bundle);
ia64_inst_t slot2 = paravirt_read_slot2(bundle);
printk(KERN_DEBUG
"bundle 0x%p 0x%016lx 0x%016lx\n", bundle, quad[0], quad[1]);
printk(KERN_DEBUG
"bundle template 0x%x\n",
bundle->quad0.template);
printk(KERN_DEBUG
"slot0 0x%lx slot1_p0 0x%lx slot1_p1 0x%lx slot2 0x%lx\n",
(unsigned long)bundle->quad0.slot0,
(unsigned long)bundle->quad0.slot1_p0,
(unsigned long)bundle->quad1.slot1_p1,
(unsigned long)bundle->quad1.slot2);
printk(KERN_DEBUG
"slot0 0x%016llx slot1 0x%016llx slot2 0x%016llx\n",
slot0.l, slot1.l, slot2.l);
}
static int noreplace_paravirt __init_or_module = 0;
static int __init setup_noreplace_paravirt(char *str)
{
noreplace_paravirt = 1;
return 1;
}
__setup("noreplace-paravirt", setup_noreplace_paravirt);
#ifdef ASM_SUPPORTED
static void __init_or_module
fill_nop_bundle(void *sbundle, void *ebundle)
{
extern const char paravirt_nop_bundle[];
extern const unsigned long paravirt_nop_bundle_size;
void *bundle = sbundle;
BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
while (bundle < ebundle) {
memcpy(bundle, paravirt_nop_bundle, paravirt_nop_bundle_size);
bundle += paravirt_nop_bundle_size;
}
}
/* helper function */
unsigned long __init_or_module
__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
const struct paravirt_patch_bundle_elem *elems,
unsigned long nelems,
const struct paravirt_patch_bundle_elem **found)
{
unsigned long used = 0;
unsigned long i;
BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
found = NULL;
for (i = 0; i < nelems; i++) {
const struct paravirt_patch_bundle_elem *p = &elems[i];
if (p->type == type) {
unsigned long need = p->ebundle - p->sbundle;
unsigned long room = ebundle - sbundle;
if (found != NULL)
*found = p;
if (room < need) {
/* no room to replace. skip it */
printk(KERN_DEBUG
"the space is too small to put "
"bundles. type %ld need %ld room %ld\n",
type, need, room);
break;
}
used = need;
memcpy(sbundle, p->sbundle, used);
break;
}
}
return used;
}
void __init_or_module
paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
const struct paravirt_patch_site_bundle *end)
{
const struct paravirt_patch_site_bundle *p;
if (noreplace_paravirt)
return;
if (pv_init_ops.patch_bundle == NULL)
return;
for (p = start; p < end; p++) {
unsigned long used;
used = (*pv_init_ops.patch_bundle)(p->sbundle, p->ebundle,
p->type);
if (used == 0)
continue;
fill_nop_bundle(p->sbundle + used, p->ebundle);
paravirt_flush_i_cache_range(p->sbundle,
p->ebundle - p->sbundle);
}
ia64_sync_i();
ia64_srlz_i();
}
/*
* nop.i, nop.m, nop.f instruction are same format.
* but nop.b has differennt format.
* This doesn't support nop.b for now.
*/
static void __init_or_module
fill_nop_inst(unsigned long stag, unsigned long etag)
{
extern const bundle_t paravirt_nop_mfi_inst_bundle[];
unsigned long tag;
const ia64_inst_t nop_inst =
paravirt_read_slot0(paravirt_nop_mfi_inst_bundle);
for (tag = stag; tag < etag; tag = paravirt_get_next_tag(tag))
paravirt_write_inst(tag, nop_inst);
}
void __init_or_module
paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
const struct paravirt_patch_site_inst *end)
{
const struct paravirt_patch_site_inst *p;
if (noreplace_paravirt)
return;
if (pv_init_ops.patch_inst == NULL)
return;
for (p = start; p < end; p++) {
unsigned long tag;
bundle_t *sbundle;
bundle_t *ebundle;
tag = (*pv_init_ops.patch_inst)(p->stag, p->etag, p->type);
if (tag == p->stag)
continue;
fill_nop_inst(tag, p->etag);
sbundle = paravirt_get_bundle(p->stag);
ebundle = paravirt_get_bundle(p->etag) + 1;
paravirt_flush_i_cache_range(sbundle, (ebundle - sbundle) *
sizeof(bundle_t));
}
ia64_sync_i();
ia64_srlz_i();
}
#endif /* ASM_SUPPOTED */
/* brl.cond.sptk.many <target64> X3 */
typedef union inst_x3_op {
ia64_inst_t inst;
struct {
unsigned long qp: 6;
unsigned long btyp: 3;
unsigned long unused: 3;
unsigned long p: 1;
unsigned long imm20b: 20;
unsigned long wh: 2;
unsigned long d: 1;
unsigned long i: 1;
unsigned long opcode: 4;
};
unsigned long l;
} inst_x3_op_t;
typedef union inst_x3_imm {
ia64_inst_t inst;
struct {
unsigned long unused: 2;
unsigned long imm39: 39;
};
unsigned long l;
} inst_x3_imm_t;
void __init_or_module
paravirt_patch_reloc_brl(unsigned long tag, const void *target)
{
unsigned long tag_op = paravirt_get_next_tag(tag);
unsigned long tag_imm = tag;
bundle_t *bundle = paravirt_get_bundle(tag);
ia64_inst_t inst_op = paravirt_read_inst(tag_op);
ia64_inst_t inst_imm = paravirt_read_inst(tag_imm);
inst_x3_op_t inst_x3_op = { .l = inst_op.l };
inst_x3_imm_t inst_x3_imm = { .l = inst_imm.l };
unsigned long imm60 =
((unsigned long)target - (unsigned long)bundle) >> 4;
BUG_ON(paravirt_get_slot(tag) != 1); /* MLX */
BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
/* imm60[59] 1bit */
inst_x3_op.i = (imm60 >> 59) & 1;
/* imm60[19:0] 20bit */
inst_x3_op.imm20b = imm60 & ((1UL << 20) - 1);
/* imm60[58:20] 39bit */
inst_x3_imm.imm39 = (imm60 >> 20) & ((1UL << 39) - 1);
inst_op.l = inst_x3_op.l;
inst_imm.l = inst_x3_imm.l;
paravirt_write_inst(tag_op, inst_op);
paravirt_write_inst(tag_imm, inst_imm);
}
/* br.cond.sptk.many <target25> B1 */
typedef union inst_b1 {
ia64_inst_t inst;
struct {
unsigned long qp: 6;
unsigned long btype: 3;
unsigned long unused: 3;
unsigned long p: 1;
unsigned long imm20b: 20;
unsigned long wh: 2;
unsigned long d: 1;
unsigned long s: 1;
unsigned long opcode: 4;
};
unsigned long l;
} inst_b1_t;
void __init
paravirt_patch_reloc_br(unsigned long tag, const void *target)
{
bundle_t *bundle = paravirt_get_bundle(tag);
ia64_inst_t inst = paravirt_read_inst(tag);
unsigned long target25 = (unsigned long)target - (unsigned long)bundle;
inst_b1_t inst_b1;
BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
inst_b1.l = inst.l;
if (target25 & (1UL << 63))
inst_b1.s = 1;
else
inst_b1.s = 0;
inst_b1.imm20b = target25 >> 4;
inst.l = inst_b1.l;
paravirt_write_inst(tag, inst);
}
void __init
__paravirt_patch_apply_branch(
unsigned long tag, unsigned long type,
const struct paravirt_patch_branch_target *entries,
unsigned int nr_entries)
{
unsigned int i;
for (i = 0; i < nr_entries; i++) {
if (entries[i].type == type) {
paravirt_patch_reloc_br(tag, entries[i].entry);
break;
}
}
}
static void __init
paravirt_patch_apply_branch(const struct paravirt_patch_site_branch *start,
const struct paravirt_patch_site_branch *end)
{
const struct paravirt_patch_site_branch *p;
if (noreplace_paravirt)
return;
if (pv_init_ops.patch_branch == NULL)
return;
for (p = start; p < end; p++)
(*pv_init_ops.patch_branch)(p->tag, p->type);
ia64_sync_i();
ia64_srlz_i();
}
void __init
paravirt_patch_apply(void)
{
extern const char __start_paravirt_bundles[];
extern const char __stop_paravirt_bundles[];
extern const char __start_paravirt_insts[];
extern const char __stop_paravirt_insts[];
extern const char __start_paravirt_branches[];
extern const char __stop_paravirt_branches[];
paravirt_patch_apply_bundle((const struct paravirt_patch_site_bundle *)
__start_paravirt_bundles,
(const struct paravirt_patch_site_bundle *)
__stop_paravirt_bundles);
paravirt_patch_apply_inst((const struct paravirt_patch_site_inst *)
__start_paravirt_insts,
(const struct paravirt_patch_site_inst *)
__stop_paravirt_insts);
paravirt_patch_apply_branch((const struct paravirt_patch_site_branch *)
__start_paravirt_branches,
(const struct paravirt_patch_site_branch *)
__stop_paravirt_branches);
}
/*
* Local variables:
* mode: C
* c-set-style: "linux"
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*/

79
arch/ia64/kernel/paravirt_patchlist.c 100644
View File

@ -0,0 +1,79 @@
/******************************************************************************
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/bug.h>
#include <asm/paravirt.h>
#define DECLARE(name) \
extern unsigned long \
__ia64_native_start_gate_##name##_patchlist[]; \
extern unsigned long \
__ia64_native_end_gate_##name##_patchlist[]
DECLARE(fsyscall);
DECLARE(brl_fsys_bubble_down);
DECLARE(vtop);
DECLARE(mckinley_e9);
extern unsigned long __start_gate_section[];
#define ASSIGN(name) \
.start_##name##_patchlist = \
(unsigned long)__ia64_native_start_gate_##name##_patchlist, \
.end_##name##_patchlist = \
(unsigned long)__ia64_native_end_gate_##name##_patchlist
struct pv_patchdata pv_patchdata __initdata = {
ASSIGN(fsyscall),
ASSIGN(brl_fsys_bubble_down),
ASSIGN(vtop),
ASSIGN(mckinley_e9),
.gate_section = (void*)__start_gate_section,
};
unsigned long __init
paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
{
#define CASE(NAME, name) \
case PV_GATE_START_##NAME: \
return pv_patchdata.start_##name##_patchlist; \
case PV_GATE_END_##NAME: \
return pv_patchdata.end_##name##_patchlist; \
switch (type) {
CASE(FSYSCALL, fsyscall);
CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
CASE(VTOP, vtop);
CASE(MCKINLEY_E9, mckinley_e9);
default:
BUG();
break;
}
return 0;
}
void * __init
paravirt_get_gate_section(void)
{
return pv_patchdata.gate_section;
}

28
arch/ia64/kernel/paravirt_patchlist.h 100644
View File

@ -0,0 +1,28 @@
/******************************************************************************
* linux/arch/ia64/xen/paravirt_patchlist.h
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#if defined(__IA64_GATE_PARAVIRTUALIZED_XEN)
#include <asm/xen/patchlist.h>
#else
#include <asm/native/patchlist.h>
#endif

99
arch/ia64/kernel/paravirtentry.S
View File

@ -20,8 +20,11 @@
*
*/
#include <linux/init.h>
#include <asm/asmmacro.h>
#include <asm/asm-offsets.h>
#include <asm/paravirt_privop.h>
#include <asm/paravirt_patch.h>
#include "entry.h"
#define DATA8(sym, init_value) \
@ -32,29 +35,87 @@
data8 init_value ; \
.popsection
#define BRANCH(targ, reg, breg) \
movl reg=targ ; \
;; \
ld8 reg=[reg] ; \
;; \
mov breg=reg ; \
#define BRANCH(targ, reg, breg, type) \
PARAVIRT_PATCH_SITE_BR(PARAVIRT_PATCH_TYPE_BR_ ## type) ; \
;; \
movl reg=targ ; \
;; \
ld8 reg=[reg] ; \
;; \
mov breg=reg ; \
br.cond.sptk.many breg
#define BRANCH_PROC(sym, reg, breg) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
#define BRANCH_PROC(sym, reg, breg, type) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
#define BRANCH_PROC_UNWINFO(sym, reg, breg) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
PT_REGS_UNWIND_INFO(0) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
#define BRANCH_PROC_UNWINFO(sym, reg, breg, type) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
PT_REGS_UNWIND_INFO(0) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
BRANCH_PROC(switch_to, r22, b7)
BRANCH_PROC_UNWINFO(leave_syscall, r22, b7)
BRANCH_PROC(work_processed_syscall, r2, b7)
BRANCH_PROC_UNWINFO(leave_kernel, r22, b7)
BRANCH_PROC(switch_to, r22, b7, SWITCH_TO)
BRANCH_PROC_UNWINFO(leave_syscall, r22, b7, LEAVE_SYSCALL)
BRANCH_PROC(work_processed_syscall, r2, b7, WORK_PROCESSED_SYSCALL)
BRANCH_PROC_UNWINFO(leave_kernel, r22, b7, LEAVE_KERNEL)
#ifdef CONFIG_MODULES
#define __INIT_OR_MODULE .text
#define __INITDATA_OR_MODULE .data
#else
#define __INIT_OR_MODULE __INIT
#define __INITDATA_OR_MODULE __INITDATA
#endif /* CONFIG_MODULES */
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_fc_i)
fc.i r32
br.ret.sptk.many rp
END(paravirt_fc_i)
__FINIT
__INIT_OR_MODULE
.align 32
GLOBAL_ENTRY(paravirt_nop_b_inst_bundle)
{
nop.b 0
nop.b 0
nop.b 0
}
END(paravirt_nop_b_inst_bundle)
__FINIT
/* NOTE: nop.[mfi] has same format */
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_nop_mfi_inst_bundle)
{
nop.m 0
nop.f 0
nop.i 0
}
END(paravirt_nop_mfi_inst_bundle)
__FINIT
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_nop_bundle)
paravirt_nop_bundle_start:
{
nop 0
nop 0
nop 0
}
paravirt_nop_bundle_end:
END(paravirt_nop_bundle)
__FINIT
__INITDATA_OR_MODULE
.align 8
.global paravirt_nop_bundle_size
paravirt_nop_bundle_size:
data8 paravirt_nop_bundle_end - paravirt_nop_bundle_start

40
arch/ia64/kernel/patch.c
View File

@ -7,6 +7,7 @@
#include <linux/init.h>
#include <linux/string.h>
#include <asm/paravirt.h>
#include <asm/patch.h>
#include <asm/processor.h>
#include <asm/sections.h>
@ -169,16 +170,35 @@ ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
ia64_srlz_i();
}
extern unsigned long ia64_native_fsyscall_table[NR_syscalls];
extern char ia64_native_fsys_bubble_down[];
struct pv_fsys_data pv_fsys_data __initdata = {
.fsyscall_table = (unsigned long *)ia64_native_fsyscall_table,
.fsys_bubble_down = (void *)ia64_native_fsys_bubble_down,
};
unsigned long * __init
paravirt_get_fsyscall_table(void)
{
return pv_fsys_data.fsyscall_table;
}
char * __init
paravirt_get_fsys_bubble_down(void)
{
return pv_fsys_data.fsys_bubble_down;
}
static void __init
patch_fsyscall_table (unsigned long start, unsigned long end)
{
extern unsigned long fsyscall_table[NR_syscalls];
u64 fsyscall_table = (u64)paravirt_get_fsyscall_table();
s32 *offp = (s32 *) start;
u64 ip;
while (offp < (s32 *) end) {
ip = (u64) ia64_imva((char *) offp + *offp);
ia64_patch_imm64(ip, (u64) fsyscall_table);
ia64_patch_imm64(ip, fsyscall_table);
ia64_fc((void *) ip);
++offp;
}
@ -189,7 +209,7 @@ patch_fsyscall_table (unsigned long start, unsigned long end)
static void __init
patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
{
extern char fsys_bubble_down[];
u64 fsys_bubble_down = (u64)paravirt_get_fsys_bubble_down();
s32 *offp = (s32 *) start;
u64 ip;
@ -207,13 +227,13 @@ patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
void __init
ia64_patch_gate (void)
{
# define START(name) ((unsigned long) __start_gate_##name##_patchlist)
# define END(name) ((unsigned long)__end_gate_##name##_patchlist)
# define START(name) paravirt_get_gate_patchlist(PV_GATE_START_##name)
# define END(name) paravirt_get_gate_patchlist(PV_GATE_END_##name)
patch_fsyscall_table(START(fsyscall), END(fsyscall));
patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down), END(brl_fsys_bubble_down));
ia64_patch_vtop(START(vtop), END(vtop));
ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9));
patch_fsyscall_table(START(FSYSCALL), END(FSYSCALL));
patch_brl_fsys_bubble_down(START(BRL_FSYS_BUBBLE_DOWN), END(BRL_FSYS_BUBBLE_DOWN));
ia64_patch_vtop(START(VTOP), END(VTOP));
ia64_patch_mckinley_e9(START(MCKINLEY_E9), END(MCKINLEY_E9));
}
void ia64_patch_phys_stack_reg(unsigned long val)
@ -229,7 +249,7 @@ void ia64_patch_phys_stack_reg(unsigned long val)
while (offp < end) {
ip = (u64) offp + *offp;
ia64_patch(ip, mask, imm);
ia64_fc(ip);
ia64_fc((void *)ip);
++offp;
}
ia64_sync_i();

2
arch/ia64/kernel/setup.c
View File

@ -52,6 +52,7 @@
#include <asm/meminit.h>
#include <asm/page.h>
#include <asm/paravirt.h>
#include <asm/paravirt_patch.h>
#include <asm/patch.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@ -537,6 +538,7 @@ setup_arch (char **cmdline_p)
paravirt_arch_setup_early();
ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
paravirt_patch_apply();
*cmdline_p = __va(ia64_boot_param->command_line);
strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);

9
arch/ia64/kernel/time.c
View File

@ -49,6 +49,15 @@ EXPORT_SYMBOL(last_cli_ip);
#endif
#ifdef CONFIG_PARAVIRT
/* We need to define a real function for sched_clock, to override the
weak default version */
unsigned long long sched_clock(void)
{
return paravirt_sched_clock();
}
#endif
#ifdef CONFIG_PARAVIRT
static void
paravirt_clocksource_resume(void)

30
arch/ia64/kernel/vmlinux.lds.S
View File

@ -169,6 +169,30 @@ SECTIONS
__end___mckinley_e9_bundles = .;
}
#if defined(CONFIG_PARAVIRT)
. = ALIGN(16);
.paravirt_bundles : AT(ADDR(.paravirt_bundles) - LOAD_OFFSET)
{
__start_paravirt_bundles = .;
*(.paravirt_bundles)
__stop_paravirt_bundles = .;
}
. = ALIGN(16);
.paravirt_insts : AT(ADDR(.paravirt_insts) - LOAD_OFFSET)
{
__start_paravirt_insts = .;
*(.paravirt_insts)
__stop_paravirt_insts = .;
}
. = ALIGN(16);
.paravirt_branches : AT(ADDR(.paravirt_branches) - LOAD_OFFSET)
{
__start_paravirt_branches = .;
*(.paravirt_branches)
__stop_paravirt_branches = .;
}
#endif
#if defined(CONFIG_IA64_GENERIC)
/* Machine Vector */
. = ALIGN(16);
@ -201,6 +225,12 @@ SECTIONS
__start_gate_section = .;
*(.data.gate)
__stop_gate_section = .;
#ifdef CONFIG_XEN
. = ALIGN(PAGE_SIZE);
__xen_start_gate_section = .;
*(.data.gate.xen)
__xen_stop_gate_section = .;
#endif
}
. = ALIGN(PAGE_SIZE); /* make sure the gate page doesn't expose
* kernel data

2
arch/ia64/kvm/kvm-ia64.c
View File

@ -70,7 +70,7 @@ static void kvm_flush_icache(unsigned long start, unsigned long len)
int l;
for (l = 0; l < (len + 32); l += 32)
ia64_fc(start + l);
ia64_fc((void *)(start + l));
ia64_sync_i();
ia64_srlz_i();

2
arch/ia64/kvm/vcpu.c
View File

@ -386,7 +386,7 @@ void set_rse_reg(struct kvm_pt_regs *regs, unsigned long r1,
else
*rnat_addr = (*rnat_addr) & (~nat_mask);
ia64_setreg(_IA64_REG_AR_BSPSTORE, bspstore);
ia64_setreg(_IA64_REG_AR_BSPSTORE, (unsigned long)bspstore);
ia64_setreg(_IA64_REG_AR_RNAT, rnat);
}
local_irq_restore(psr);

2
arch/ia64/kvm/vtlb.c
View File

@ -210,6 +210,7 @@ void thash_vhpt_insert(struct kvm_vcpu *v, u64 pte, u64 itir, u64 va, int type)
phy_pte &= ~PAGE_FLAGS_RV_MASK;
psr = ia64_clear_ic();
ia64_itc(type, va, phy_pte, itir_ps(itir));
paravirt_dv_serialize_data();
ia64_set_psr(psr);
}
@ -456,6 +457,7 @@ void thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
phy_pte &= ~PAGE_FLAGS_RV_MASK;
psr = ia64_clear_ic();
ia64_itc(type, ifa, phy_pte, ps);
paravirt_dv_serialize_data();
ia64_set_psr(psr);
}
if (!(pte&VTLB_PTE_IO))

9
arch/ia64/mm/init.c
View File

@ -35,6 +35,7 @@
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <asm/mca.h>
#include <asm/paravirt.h>
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@ -259,6 +260,7 @@ put_kernel_page (struct page *page, unsigned long address, pgprot_t pgprot)
static void __init
setup_gate (void)
{
void *gate_section;
struct page *page;
/*
@ -266,10 +268,11 @@ setup_gate (void)
* headers etc. and once execute-only page to enable
* privilege-promotion via "epc":
*/
page = virt_to_page(ia64_imva(__start_gate_section));
gate_section = paravirt_get_gate_section();
page = virt_to_page(ia64_imva(gate_section));
put_kernel_page(page, GATE_ADDR, PAGE_READONLY);
#ifdef HAVE_BUGGY_SEGREL
page = virt_to_page(ia64_imva(__start_gate_section + PAGE_SIZE));
page = virt_to_page(ia64_imva(gate_section + PAGE_SIZE));
put_kernel_page(page, GATE_ADDR + PAGE_SIZE, PAGE_GATE);
#else
put_kernel_page(page, GATE_ADDR + PERCPU_PAGE_SIZE, PAGE_GATE);
@ -667,8 +670,8 @@ mem_init (void)
* code can tell them apart.
*/
for (i = 0; i < NR_syscalls; ++i) {
extern unsigned long fsyscall_table[NR_syscalls];
extern unsigned long sys_call_table[NR_syscalls];
unsigned long *fsyscall_table = paravirt_get_fsyscall_table();
if (!fsyscall_table[i] || nolwsys)
fsyscall_table[i] = sys_call_table[i] | 1;

1
arch/ia64/scripts/pvcheck.sed
View File

@ -17,6 +17,7 @@ s/mov.*=.*cr\.iip/.warning \"cr.iip should not used directly\"/g
s/mov.*=.*cr\.ivr/.warning \"cr.ivr should not used directly\"/g
s/mov.*=[^\.]*psr/.warning \"psr should not used directly\"/g # avoid ar.fpsr
s/mov.*=.*ar\.eflags/.warning \"ar.eflags should not used directly\"/g
s/mov.*=.*ar\.itc.*/.warning \"ar.itc should not used directly\"/g
s/mov.*cr\.ifa.*=.*/.warning \"cr.ifa should not used directly\"/g
s/mov.*cr\.itir.*=.*/.warning \"cr.itir should not used directly\"/g
s/mov.*cr\.iha.*=.*/.warning \"cr.iha should not used directly\"/g

19
arch/ia64/xen/Makefile
View File

@ -3,14 +3,29 @@
#
obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o \
gate-data.o
obj-$(CONFIG_IA64_GENERIC) += machvec.o
# The gate DSO image is built using a special linker script.
include $(srctree)/arch/ia64/kernel/Makefile.gate
# tell compiled for xen
CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_XEN
AFLAGS_gate.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN -D__IA64_GATE_PARAVIRTUALIZED_XEN
# use same file of native.
$(obj)/gate.o: $(src)/../kernel/gate.S FORCE
$(call if_changed_dep,as_o_S)
$(obj)/gate.lds: $(src)/../kernel/gate.lds.S FORCE
$(call if_changed_dep,cpp_lds_S)
AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
# xen multi compile
ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S fsys.S
ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
obj-y += $(ASM_PARAVIRT_OBJS)
define paravirtualized_xen

3
arch/ia64/xen/gate-data.S 100644
View File

@ -0,0 +1,3 @@
.section .data.gate.xen, "aw"
.incbin "arch/ia64/xen/gate.so"

2
arch/ia64/xen/hypercall.S
View File

@ -9,6 +9,7 @@
#include <asm/intrinsics.h>
#include <asm/xen/privop.h>
#ifdef __INTEL_COMPILER
/*
* Hypercalls without parameter.
*/
@ -72,6 +73,7 @@ GLOBAL_ENTRY(xen_set_rr0_to_rr4)
br.ret.sptk.many rp
;;
END(xen_set_rr0_to_rr4)
#endif
GLOBAL_ENTRY(xen_send_ipi)
mov r14=r32

48
arch/ia64/xen/time.c
View File

@ -175,10 +175,58 @@ static void xen_itc_jitter_data_reset(void)
} while (unlikely(ret != lcycle));
}
/* based on xen_sched_clock() in arch/x86/xen/time.c. */
/*
* This relies on HAVE_UNSTABLE_SCHED_CLOCK. If it can't be defined,
* something similar logic should be implemented here.
*/
/*
* Xen sched_clock implementation. Returns the number of unstolen
* nanoseconds, which is nanoseconds the VCPU spent in RUNNING+BLOCKED
* states.
*/
static unsigned long long xen_sched_clock(void)
{
struct vcpu_runstate_info runstate;
unsigned long long now;
unsigned long long offset;
unsigned long long ret;
/*
* Ideally sched_clock should be called on a per-cpu basis
* anyway, so preempt should already be disabled, but that's
* not current practice at the moment.
*/
preempt_disable();
/*
* both ia64_native_sched_clock() and xen's runstate are
* based on mAR.ITC. So difference of them makes sense.
*/
now = ia64_native_sched_clock();
get_runstate_snapshot(&runstate);
WARN_ON(runstate.state != RUNSTATE_running);
offset = 0;
if (now > runstate.state_entry_time)
offset = now - runstate.state_entry_time;
ret = runstate.time[RUNSTATE_blocked] +
runstate.time[RUNSTATE_running] +
offset;
preempt_enable();
return ret;
}
struct pv_time_ops xen_time_ops __initdata = {
.init_missing_ticks_accounting = xen_init_missing_ticks_accounting,
.do_steal_accounting = xen_do_steal_accounting,
.clocksource_resume = xen_itc_jitter_data_reset,
.sched_clock = xen_sched_clock,
};
/* Called after suspend, to resume time. */

800
arch/ia64/xen/xen_pv_ops.c
View File

@ -24,6 +24,7 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/pm.h>
#include <linux/unistd.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/xencomm.h>
@ -153,6 +154,13 @@ xen_post_smp_prepare_boot_cpu(void)
xen_setup_vcpu_info_placement();
}
#ifdef ASM_SUPPORTED
static unsigned long __init_or_module
xen_patch_bundle(void *sbundle, void *ebundle, unsigned long type);
#endif
static void __init
xen_patch_branch(unsigned long tag, unsigned long type);
static const struct pv_init_ops xen_init_ops __initconst = {
.banner = xen_banner,
@ -163,6 +171,53 @@ static const struct pv_init_ops xen_init_ops __initconst = {
.arch_setup_nomca = xen_arch_setup_nomca,
.post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
#ifdef ASM_SUPPORTED
.patch_bundle = xen_patch_bundle,
#endif
.patch_branch = xen_patch_branch,
};
/***************************************************************************
* pv_fsys_data
* addresses for fsys
*/
extern unsigned long xen_fsyscall_table[NR_syscalls];
extern char xen_fsys_bubble_down[];
struct pv_fsys_data xen_fsys_data __initdata = {
.fsyscall_table = (unsigned long *)xen_fsyscall_table,
.fsys_bubble_down = (void *)xen_fsys_bubble_down,
};
/***************************************************************************
* pv_patchdata
* patchdata addresses
*/
#define DECLARE(name) \
extern unsigned long __xen_start_gate_##name##_patchlist[]; \
extern unsigned long __xen_end_gate_##name##_patchlist[]
DECLARE(fsyscall);
DECLARE(brl_fsys_bubble_down);
DECLARE(vtop);
DECLARE(mckinley_e9);
extern unsigned long __xen_start_gate_section[];
#define ASSIGN(name) \
.start_##name##_patchlist = \
(unsigned long)__xen_start_gate_##name##_patchlist, \
.end_##name##_patchlist = \
(unsigned long)__xen_end_gate_##name##_patchlist
static struct pv_patchdata xen_patchdata __initdata = {
ASSIGN(fsyscall),
ASSIGN(brl_fsys_bubble_down),
ASSIGN(vtop),
ASSIGN(mckinley_e9),
.gate_section = (void*)__xen_start_gate_section,
};
/***************************************************************************
@ -170,6 +225,76 @@ static const struct pv_init_ops xen_init_ops __initconst = {
* intrinsics hooks.
*/
#ifndef ASM_SUPPORTED
static void
xen_set_itm_with_offset(unsigned long val)
{
/* ia64_cpu_local_tick() calls this with interrupt enabled. */
/* WARN_ON(!irqs_disabled()); */
xen_set_itm(val - XEN_MAPPEDREGS->itc_offset);
}
static unsigned long
xen_get_itm_with_offset(void)
{
/* unused at this moment */
printk(KERN_DEBUG "%s is called.\n", __func__);
WARN_ON(!irqs_disabled());
return ia64_native_getreg(_IA64_REG_CR_ITM) +
XEN_MAPPEDREGS->itc_offset;
}
/* ia64_set_itc() is only called by
* cpu_init() with ia64_set_itc(0) and ia64_sync_itc().
* So XEN_MAPPEDRESG->itc_offset cal be considered as almost constant.
*/
static void
xen_set_itc(unsigned long val)
{
unsigned long mitc;
WARN_ON(!irqs_disabled());
mitc = ia64_native_getreg(_IA64_REG_AR_ITC);
XEN_MAPPEDREGS->itc_offset = val - mitc;
XEN_MAPPEDREGS->itc_last = val;
}
static unsigned long
xen_get_itc(void)
{
unsigned long res;
unsigned long itc_offset;
unsigned long itc_last;
unsigned long ret_itc_last;
itc_offset = XEN_MAPPEDREGS->itc_offset;
do {
itc_last = XEN_MAPPEDREGS->itc_last;
res = ia64_native_getreg(_IA64_REG_AR_ITC);
res += itc_offset;
if (itc_last >= res)
res = itc_last + 1;
ret_itc_last = cmpxchg(&XEN_MAPPEDREGS->itc_last,
itc_last, res);
} while (unlikely(ret_itc_last != itc_last));
return res;
#if 0
/* ia64_itc_udelay() calls ia64_get_itc() with interrupt enabled.
Should it be paravirtualized instead? */
WARN_ON(!irqs_disabled());
itc_offset = XEN_MAPPEDREGS->itc_offset;
itc_last = XEN_MAPPEDREGS->itc_last;
res = ia64_native_getreg(_IA64_REG_AR_ITC);
res += itc_offset;
if (itc_last >= res)
res = itc_last + 1;
XEN_MAPPEDREGS->itc_last = res;
return res;
#endif
}
static void xen_setreg(int regnum, unsigned long val)
{
switch (regnum) {
@ -181,11 +306,14 @@ static void xen_setreg(int regnum, unsigned long val)
xen_set_eflag(val);
break;
#endif
case _IA64_REG_AR_ITC:
xen_set_itc(val);
break;
case _IA64_REG_CR_TPR:
xen_set_tpr(val);
break;
case _IA64_REG_CR_ITM:
xen_set_itm(val);
xen_set_itm_with_offset(val);
break;
case _IA64_REG_CR_EOI:
xen_eoi(val);
@ -209,6 +337,12 @@ static unsigned long xen_getreg(int regnum)
res = xen_get_eflag();
break;
#endif
case _IA64_REG_AR_ITC:
res = xen_get_itc();
break;
case _IA64_REG_CR_ITM:
res = xen_get_itm_with_offset();
break;
case _IA64_REG_CR_IVR:
res = xen_get_ivr();
break;
@ -259,8 +393,417 @@ xen_intrin_local_irq_restore(unsigned long mask)
else
xen_rsm_i();
}
#else
#define __DEFINE_FUNC(name, code) \
extern const char xen_ ## name ## _direct_start[]; \
extern const char xen_ ## name ## _direct_end[]; \
asm (".align 32\n" \
".proc xen_" #name "\n" \
"xen_" #name ":\n" \
"xen_" #name "_direct_start:\n" \
code \
"xen_" #name "_direct_end:\n" \
"br.cond.sptk.many b6\n" \
".endp xen_" #name "\n")
static const struct pv_cpu_ops xen_cpu_ops __initdata = {
#define DEFINE_VOID_FUNC0(name, code) \
extern void \
xen_ ## name (void); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1(name, code) \
extern void \
xen_ ## name (unsigned long arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1_VOID(name, code) \
extern void \
xen_ ## name (void *arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC2(name, code) \
extern void \
xen_ ## name (unsigned long arg0, \
unsigned long arg1); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC0(name, code) \
extern unsigned long \
xen_ ## name (void); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC1(name, type, code) \
extern unsigned long \
xen_ ## name (type arg); \
__DEFINE_FUNC(name, code)
#define XEN_PSR_I_ADDR_ADDR (XSI_BASE + XSI_PSR_I_ADDR_OFS)
/*
* static void xen_set_itm_with_offset(unsigned long val)
* xen_set_itm(val - XEN_MAPPEDREGS->itc_offset);
*/
/* 2 bundles */
DEFINE_VOID_FUNC1(set_itm_with_offset,
"mov r2 = " __stringify(XSI_BASE) " + "
__stringify(XSI_ITC_OFFSET_OFS) "\n"
";;\n"
"ld8 r3 = [r2]\n"
";;\n"
"sub r8 = r8, r3\n"
"break " __stringify(HYPERPRIVOP_SET_ITM) "\n");
/*
* static unsigned long xen_get_itm_with_offset(void)
* return ia64_native_getreg(_IA64_REG_CR_ITM) + XEN_MAPPEDREGS->itc_offset;
*/
/* 2 bundles */
DEFINE_FUNC0(get_itm_with_offset,
"mov r2 = " __stringify(XSI_BASE) " + "
__stringify(XSI_ITC_OFFSET_OFS) "\n"
";;\n"
"ld8 r3 = [r2]\n"
"mov r8 = cr.itm\n"
";;\n"
"add r8 = r8, r2\n");
/*
* static void xen_set_itc(unsigned long val)
* unsigned long mitc;
*
* WARN_ON(!irqs_disabled());
* mitc = ia64_native_getreg(_IA64_REG_AR_ITC);
* XEN_MAPPEDREGS->itc_offset = val - mitc;
* XEN_MAPPEDREGS->itc_last = val;
*/
/* 2 bundles */
DEFINE_VOID_FUNC1(set_itc,
"mov r2 = " __stringify(XSI_BASE) " + "
__stringify(XSI_ITC_LAST_OFS) "\n"
"mov r3 = ar.itc\n"
";;\n"
"sub r3 = r8, r3\n"
"st8 [r2] = r8, "
__stringify(XSI_ITC_LAST_OFS) " - "
__stringify(XSI_ITC_OFFSET_OFS) "\n"
";;\n"
"st8 [r2] = r3\n");
/*
* static unsigned long xen_get_itc(void)
* unsigned long res;
* unsigned long itc_offset;
* unsigned long itc_last;
* unsigned long ret_itc_last;
*
* itc_offset = XEN_MAPPEDREGS->itc_offset;
* do {
* itc_last = XEN_MAPPEDREGS->itc_last;
* res = ia64_native_getreg(_IA64_REG_AR_ITC);
* res += itc_offset;
* if (itc_last >= res)
* res = itc_last + 1;
* ret_itc_last = cmpxchg(&XEN_MAPPEDREGS->itc_last,
* itc_last, res);
* } while (unlikely(ret_itc_last != itc_last));
* return res;
*/
/* 5 bundles */
DEFINE_FUNC0(get_itc,
"mov r2 = " __stringify(XSI_BASE) " + "
__stringify(XSI_ITC_OFFSET_OFS) "\n"
";;\n"
"ld8 r9 = [r2], " __stringify(XSI_ITC_LAST_OFS) " - "
__stringify(XSI_ITC_OFFSET_OFS) "\n"
/* r9 = itc_offset */
/* r2 = XSI_ITC_OFFSET */
"888:\n"
"mov r8 = ar.itc\n" /* res = ar.itc */
";;\n"
"ld8 r3 = [r2]\n" /* r3 = itc_last */
"add r8 = r8, r9\n" /* res = ar.itc + itc_offset */
";;\n"
"cmp.gtu p6, p0 = r3, r8\n"
";;\n"
"(p6) add r8 = 1, r3\n" /* if (itc_last > res) itc_last + 1 */
";;\n"
"mov ar.ccv = r8\n"
";;\n"
"cmpxchg8.acq r10 = [r2], r8, ar.ccv\n"
";;\n"
"cmp.ne p6, p0 = r10, r3\n"
"(p6) hint @pause\n"
"(p6) br.cond.spnt 888b\n");
DEFINE_VOID_FUNC1_VOID(fc,
"break " __stringify(HYPERPRIVOP_FC) "\n");
/*
* psr_i_addr_addr = XEN_PSR_I_ADDR_ADDR
* masked_addr = *psr_i_addr_addr
* pending_intr_addr = masked_addr - 1
* if (val & IA64_PSR_I) {
* masked = *masked_addr
* *masked_addr = 0:xen_set_virtual_psr_i(1)
* compiler barrier
* if (masked) {
* uint8_t pending = *pending_intr_addr;
* if (pending)
* XEN_HYPER_SSM_I
* }
* } else {
* *masked_addr = 1:xen_set_virtual_psr_i(0)
* }
*/
/* 6 bundles */
DEFINE_VOID_FUNC1(intrin_local_irq_restore,
/* r8 = input value: 0 or IA64_PSR_I
* p6 = (flags & IA64_PSR_I)
* = if clause
* p7 = !(flags & IA64_PSR_I)
* = else clause
*/
"cmp.ne p6, p7 = r8, r0\n"
"mov r9 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
";;\n"
/* r9 = XEN_PSR_I_ADDR */
"ld8 r9 = [r9]\n"
";;\n"
/* r10 = masked previous value */
"(p6) ld1.acq r10 = [r9]\n"
";;\n"
/* p8 = !masked interrupt masked previously? */
"(p6) cmp.ne.unc p8, p0 = r10, r0\n"
/* p7 = else clause */
"(p7) mov r11 = 1\n"
";;\n"
/* masked = 1 */
"(p7) st1.rel [r9] = r11\n"
/* p6 = if clause */
/* masked = 0
* r9 = masked_addr - 1
* = pending_intr_addr
*/
"(p8) st1.rel [r9] = r0, -1\n"
";;\n"
/* r8 = pending_intr */
"(p8) ld1.acq r11 = [r9]\n"
";;\n"
/* p9 = interrupt pending? */
"(p8) cmp.ne.unc p9, p10 = r11, r0\n"
";;\n"
"(p10) mf\n"
/* issue hypercall to trigger interrupt */
"(p9) break " __stringify(HYPERPRIVOP_SSM_I) "\n");
DEFINE_VOID_FUNC2(ptcga,
"break " __stringify(HYPERPRIVOP_PTC_GA) "\n");
DEFINE_VOID_FUNC2(set_rr,
"break " __stringify(HYPERPRIVOP_SET_RR) "\n");
/*
* tmp = XEN_MAPPEDREGS->interrupt_mask_addr = XEN_PSR_I_ADDR_ADDR;
* tmp = *tmp
* tmp = *tmp;
* psr_i = tmp? 0: IA64_PSR_I;
*/
/* 4 bundles */
DEFINE_FUNC0(get_psr_i,
"mov r9 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
";;\n"
"ld8 r9 = [r9]\n" /* r9 = XEN_PSR_I_ADDR */
"mov r8 = 0\n" /* psr_i = 0 */
";;\n"
"ld1.acq r9 = [r9]\n" /* r9 = XEN_PSR_I */
";;\n"
"cmp.eq.unc p6, p0 = r9, r0\n" /* p6 = (XEN_PSR_I != 0) */
";;\n"
"(p6) mov r8 = " __stringify(1 << IA64_PSR_I_BIT) "\n");
DEFINE_FUNC1(thash, unsigned long,
"break " __stringify(HYPERPRIVOP_THASH) "\n");
DEFINE_FUNC1(get_cpuid, int,
"break " __stringify(HYPERPRIVOP_GET_CPUID) "\n");
DEFINE_FUNC1(get_pmd, int,
"break " __stringify(HYPERPRIVOP_GET_PMD) "\n");
DEFINE_FUNC1(get_rr, unsigned long,
"break " __stringify(HYPERPRIVOP_GET_RR) "\n");
/*
* void xen_privop_ssm_i(void)
*
* int masked = !xen_get_virtual_psr_i();
* // masked = *(*XEN_MAPPEDREGS->interrupt_mask_addr)
* xen_set_virtual_psr_i(1)
* // *(*XEN_MAPPEDREGS->interrupt_mask_addr) = 0
* // compiler barrier
* if (masked) {
* uint8_t* pend_int_addr =
* (uint8_t*)(*XEN_MAPPEDREGS->interrupt_mask_addr) - 1;
* uint8_t pending = *pend_int_addr;
* if (pending)
* XEN_HYPER_SSM_I
* }
*/
/* 4 bundles */
DEFINE_VOID_FUNC0(ssm_i,
"mov r8 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
";;\n"
"ld8 r8 = [r8]\n" /* r8 = XEN_PSR_I_ADDR */
";;\n"
"ld1.acq r9 = [r8]\n" /* r9 = XEN_PSR_I */
";;\n"
"st1.rel [r8] = r0, -1\n" /* psr_i = 0. enable interrupt
* r8 = XEN_PSR_I_ADDR - 1
* = pend_int_addr
*/
"cmp.eq.unc p0, p6 = r9, r0\n"/* p6 = !XEN_PSR_I
* previously interrupt
* masked?
*/
";;\n"
"(p6) ld1.acq r8 = [r8]\n" /* r8 = xen_pend_int */
";;\n"
"(p6) cmp.eq.unc p6, p7 = r8, r0\n" /*interrupt pending?*/
";;\n"
/* issue hypercall to get interrupt */
"(p7) break " __stringify(HYPERPRIVOP_SSM_I) "\n"
";;\n");
/*
* psr_i_addr_addr = XEN_MAPPEDREGS->interrupt_mask_addr
* = XEN_PSR_I_ADDR_ADDR;
* psr_i_addr = *psr_i_addr_addr;
* *psr_i_addr = 1;
*/
/* 2 bundles */
DEFINE_VOID_FUNC0(rsm_i,
"mov r8 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
/* r8 = XEN_PSR_I_ADDR */
"mov r9 = 1\n"
";;\n"
"ld8 r8 = [r8]\n" /* r8 = XEN_PSR_I */
";;\n"
"st1.rel [r8] = r9\n"); /* XEN_PSR_I = 1 */
extern void
xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
unsigned long val2, unsigned long val3,
unsigned long val4);
__DEFINE_FUNC(set_rr0_to_rr4,
"break " __stringify(HYPERPRIVOP_SET_RR0_TO_RR4) "\n");
extern unsigned long xen_getreg(int regnum);
#define __DEFINE_GET_REG(id, privop) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r8\n" \
";;\n" \
"(p6) break " __stringify(HYPERPRIVOP_GET_ ## privop) "\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
__DEFINE_FUNC(getreg,
__DEFINE_GET_REG(PSR, PSR)
#ifdef CONFIG_IA32_SUPPORT
__DEFINE_GET_REG(AR_EFLAG, EFLAG)
#endif
/* get_itc */
"mov r2 = " __stringify(_IA64_REG_AR_ITC) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r8\n"
";;\n"
"(p6) br.cond.spnt xen_get_itc\n"
";;\n"
/* get itm */
"mov r2 = " __stringify(_IA64_REG_CR_ITM) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r8\n"
";;\n"
"(p6) br.cond.spnt xen_get_itm_with_offset\n"
";;\n"
__DEFINE_GET_REG(CR_IVR, IVR)
__DEFINE_GET_REG(CR_TPR, TPR)
/* fall back */
"movl r2 = ia64_native_getreg_func\n"
";;\n"
"mov b7 = r2\n"
";;\n"
"br.cond.sptk.many b7\n");
extern void xen_setreg(int regnum, unsigned long val);
#define __DEFINE_SET_REG(id, privop) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r9\n" \
";;\n" \
"(p6) break " __stringify(HYPERPRIVOP_ ## privop) "\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
__DEFINE_FUNC(setreg,
/* kr0 .. kr 7*/
/*
* if (_IA64_REG_AR_KR0 <= regnum &&
* regnum <= _IA64_REG_AR_KR7) {
* register __index asm ("r8") = regnum - _IA64_REG_AR_KR0
* register __val asm ("r9") = val
* "break HYPERPRIVOP_SET_KR"
* }
*/
"mov r17 = r9\n"
"mov r2 = " __stringify(_IA64_REG_AR_KR0) "\n"
";;\n"
"cmp.ge p6, p0 = r9, r2\n"
"sub r17 = r17, r2\n"
";;\n"
"(p6) cmp.ge.unc p7, p0 = "
__stringify(_IA64_REG_AR_KR7) " - " __stringify(_IA64_REG_AR_KR0)
", r17\n"
";;\n"
"(p7) mov r9 = r8\n"
";;\n"
"(p7) mov r8 = r17\n"
"(p7) break " __stringify(HYPERPRIVOP_SET_KR) "\n"
/* set itm */
"mov r2 = " __stringify(_IA64_REG_CR_ITM) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r8\n"
";;\n"
"(p6) br.cond.spnt xen_set_itm_with_offset\n"
/* set itc */
"mov r2 = " __stringify(_IA64_REG_AR_ITC) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r8\n"
";;\n"
"(p6) br.cond.spnt xen_set_itc\n"
#ifdef CONFIG_IA32_SUPPORT
__DEFINE_SET_REG(AR_EFLAG, SET_EFLAG)
#endif
__DEFINE_SET_REG(CR_TPR, SET_TPR)
__DEFINE_SET_REG(CR_EOI, EOI)
/* fall back */
"movl r2 = ia64_native_setreg_func\n"
";;\n"
"mov b7 = r2\n"
";;\n"
"br.cond.sptk.many b7\n");
#endif
static const struct pv_cpu_ops xen_cpu_ops __initconst = {
.fc = xen_fc,
.thash = xen_thash,
.get_cpuid = xen_get_cpuid,
@ -337,7 +880,7 @@ xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
}
static const struct pv_iosapic_ops xen_iosapic_ops __initconst = {
static struct pv_iosapic_ops xen_iosapic_ops __initdata = {
.pcat_compat_init = xen_pcat_compat_init,
.__get_irq_chip = xen_iosapic_get_irq_chip,
@ -355,6 +898,8 @@ xen_setup_pv_ops(void)
xen_info_init();
pv_info = xen_info;
pv_init_ops = xen_init_ops;
pv_fsys_data = xen_fsys_data;
pv_patchdata = xen_patchdata;
pv_cpu_ops = xen_cpu_ops;
pv_iosapic_ops = xen_iosapic_ops;
pv_irq_ops = xen_irq_ops;
@ -362,3 +907,252 @@ xen_setup_pv_ops(void)
paravirt_cpu_asm_init(&xen_cpu_asm_switch);
}
#ifdef ASM_SUPPORTED
/***************************************************************************
* binary pacthing
* pv_init_ops.patch_bundle
*/
#define DEFINE_FUNC_GETREG(name, privop) \
DEFINE_FUNC0(get_ ## name, \
"break "__stringify(HYPERPRIVOP_GET_ ## privop) "\n")
DEFINE_FUNC_GETREG(psr, PSR);
DEFINE_FUNC_GETREG(eflag, EFLAG);
DEFINE_FUNC_GETREG(ivr, IVR);
DEFINE_FUNC_GETREG(tpr, TPR);
#define DEFINE_FUNC_SET_KR(n) \
DEFINE_VOID_FUNC0(set_kr ## n, \
";;\n" \
"mov r9 = r8\n" \
"mov r8 = " #n "\n" \
"break " __stringify(HYPERPRIVOP_SET_KR) "\n")
DEFINE_FUNC_SET_KR(0);
DEFINE_FUNC_SET_KR(1);
DEFINE_FUNC_SET_KR(2);
DEFINE_FUNC_SET_KR(3);
DEFINE_FUNC_SET_KR(4);
DEFINE_FUNC_SET_KR(5);
DEFINE_FUNC_SET_KR(6);
DEFINE_FUNC_SET_KR(7);
#define __DEFINE_FUNC_SETREG(name, privop) \
DEFINE_VOID_FUNC0(name, \
"break "__stringify(HYPERPRIVOP_ ## privop) "\n")
#define DEFINE_FUNC_SETREG(name, privop) \
__DEFINE_FUNC_SETREG(set_ ## name, SET_ ## privop)
DEFINE_FUNC_SETREG(eflag, EFLAG);
DEFINE_FUNC_SETREG(tpr, TPR);
__DEFINE_FUNC_SETREG(eoi, EOI);
extern const char xen_check_events[];
extern const char __xen_intrin_local_irq_restore_direct_start[];
extern const char __xen_intrin_local_irq_restore_direct_end[];
extern const unsigned long __xen_intrin_local_irq_restore_direct_reloc;
asm (
".align 32\n"
".proc xen_check_events\n"
"xen_check_events:\n"
/* masked = 0
* r9 = masked_addr - 1
* = pending_intr_addr
*/
"st1.rel [r9] = r0, -1\n"
";;\n"
/* r8 = pending_intr */
"ld1.acq r11 = [r9]\n"
";;\n"
/* p9 = interrupt pending? */
"cmp.ne p9, p10 = r11, r0\n"
";;\n"
"(p10) mf\n"
/* issue hypercall to trigger interrupt */
"(p9) break " __stringify(HYPERPRIVOP_SSM_I) "\n"
"br.cond.sptk.many b6\n"
".endp xen_check_events\n"
"\n"
".align 32\n"
".proc __xen_intrin_local_irq_restore_direct\n"
"__xen_intrin_local_irq_restore_direct:\n"
"__xen_intrin_local_irq_restore_direct_start:\n"
"1:\n"
"{\n"
"cmp.ne p6, p7 = r8, r0\n"
"mov r17 = ip\n" /* get ip to calc return address */
"mov r9 = "__stringify(XEN_PSR_I_ADDR_ADDR) "\n"
";;\n"
"}\n"
"{\n"
/* r9 = XEN_PSR_I_ADDR */
"ld8 r9 = [r9]\n"
";;\n"
/* r10 = masked previous value */
"(p6) ld1.acq r10 = [r9]\n"
"adds r17 = 1f - 1b, r17\n" /* calculate return address */
";;\n"
"}\n"
"{\n"
/* p8 = !masked interrupt masked previously? */
"(p6) cmp.ne.unc p8, p0 = r10, r0\n"
"\n"
/* p7 = else clause */
"(p7) mov r11 = 1\n"
";;\n"
"(p8) mov b6 = r17\n" /* set return address */
"}\n"
"{\n"
/* masked = 1 */
"(p7) st1.rel [r9] = r11\n"
"\n"
"[99:]\n"
"(p8) brl.cond.dptk.few xen_check_events\n"
"}\n"
/* pv calling stub is 5 bundles. fill nop to adjust return address */
"{\n"
"nop 0\n"
"nop 0\n"
"nop 0\n"
"}\n"
"1:\n"
"__xen_intrin_local_irq_restore_direct_end:\n"
".endp __xen_intrin_local_irq_restore_direct\n"
"\n"
".align 8\n"
"__xen_intrin_local_irq_restore_direct_reloc:\n"
"data8 99b\n"
);
static struct paravirt_patch_bundle_elem xen_patch_bundle_elems[]
__initdata_or_module =
{
#define XEN_PATCH_BUNDLE_ELEM(name, type) \
{ \
(void*)xen_ ## name ## _direct_start, \
(void*)xen_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_ ## type, \
}
XEN_PATCH_BUNDLE_ELEM(fc, FC),
XEN_PATCH_BUNDLE_ELEM(thash, THASH),
XEN_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
XEN_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
XEN_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
XEN_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
XEN_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
XEN_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
XEN_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
XEN_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
XEN_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
{
(void*)__xen_intrin_local_irq_restore_direct_start,
(void*)__xen_intrin_local_irq_restore_direct_end,
PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE,
},
#define XEN_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
{ \
xen_get_ ## name ## _direct_start, \
xen_get_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
}
XEN_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
XEN_PATCH_BUNDLE_ELEM_GETREG(eflag, AR_EFLAG),
XEN_PATCH_BUNDLE_ELEM_GETREG(ivr, CR_IVR),
XEN_PATCH_BUNDLE_ELEM_GETREG(tpr, CR_TPR),
XEN_PATCH_BUNDLE_ELEM_GETREG(itc, AR_ITC),
XEN_PATCH_BUNDLE_ELEM_GETREG(itm_with_offset, CR_ITM),
#define __XEN_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
{ \
xen_ ## name ## _direct_start, \
xen_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
}
#define XEN_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
__XEN_PATCH_BUNDLE_ELEM_SETREG(set_ ## name, reg)
XEN_PATCH_BUNDLE_ELEM_SETREG(kr0, AR_KR0),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr1, AR_KR1),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr2, AR_KR2),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr3, AR_KR3),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr4, AR_KR4),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr5, AR_KR5),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr6, AR_KR6),
XEN_PATCH_BUNDLE_ELEM_SETREG(kr7, AR_KR7),
XEN_PATCH_BUNDLE_ELEM_SETREG(eflag, AR_EFLAG),
XEN_PATCH_BUNDLE_ELEM_SETREG(tpr, CR_TPR),
__XEN_PATCH_BUNDLE_ELEM_SETREG(eoi, CR_EOI),
XEN_PATCH_BUNDLE_ELEM_SETREG(itc, AR_ITC),
XEN_PATCH_BUNDLE_ELEM_SETREG(itm_with_offset, CR_ITM),
};
static unsigned long __init_or_module
xen_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
{
const unsigned long nelems = sizeof(xen_patch_bundle_elems) /
sizeof(xen_patch_bundle_elems[0]);
unsigned long used;
const struct paravirt_patch_bundle_elem *found;
used = __paravirt_patch_apply_bundle(sbundle, ebundle, type,
xen_patch_bundle_elems, nelems,
&found);
if (found == NULL)
/* fallback */
return ia64_native_patch_bundle(sbundle, ebundle, type);
if (used == 0)
return used;
/* relocation */
switch (type) {
case PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE: {
unsigned long reloc =
__xen_intrin_local_irq_restore_direct_reloc;
unsigned long reloc_offset = reloc - (unsigned long)
__xen_intrin_local_irq_restore_direct_start;
unsigned long tag = (unsigned long)sbundle + reloc_offset;
paravirt_patch_reloc_brl(tag, xen_check_events);
break;
}
default:
/* nothing */
break;
}
return used;
}
#endif /* ASM_SUPPOTED */
const struct paravirt_patch_branch_target xen_branch_target[]
__initconst = {
#define PARAVIRT_BR_TARGET(name, type) \
{ \
&xen_ ## name, \
PARAVIRT_PATCH_TYPE_BR_ ## type, \
}
PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
};
static void __init
xen_patch_branch(unsigned long tag, unsigned long type)
{
const unsigned long nelem =
sizeof(xen_branch_target) / sizeof(xen_branch_target[0]);
__paravirt_patch_apply_branch(tag, type, xen_branch_target, nelem);
}