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Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD 

There's nothing much in the way of new features this time; it's mostly
bug fixes, plus Nikunj has implemented support for KVM_CAP_NR_MEMSLOTS.
hifive-unleashed-5.1
Paolo Bonzini 2015-11-02 13:52:45 +01:00
parent 4d5140c579 70aa3961a1
commit d6cf98e06e
9 changed files with 63 additions and 11 deletions
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5
arch/powerpc/include/asm/disassemble.h
View File

@ -42,6 +42,11 @@ static inline unsigned int get_dcrn(u32 inst)
return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
}
static inline unsigned int get_tmrn(u32 inst)
{
return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
}
static inline unsigned int get_rt(u32 inst)
{
return (inst >> 21) & 0x1f;

6
arch/powerpc/include/asm/reg_booke.h
View File

@ -742,6 +742,12 @@
#define MMUBE1_VBE4 0x00000002
#define MMUBE1_VBE5 0x00000001
#define TMRN_TMCFG0 16 /* Thread Management Configuration Register 0 */
#define TMRN_TMCFG0_NPRIBITS 0x003f0000 /* Bits of thread priority */
#define TMRN_TMCFG0_NPRIBITS_SHIFT 16
#define TMRN_TMCFG0_NATHRD 0x00003f00 /* Number of active threads */
#define TMRN_TMCFG0_NATHRD_SHIFT 8
#define TMRN_TMCFG0_NTHRD 0x0000003f /* Number of threads */
#define TMRN_IMSR0 0x120 /* Initial MSR Register 0 (e6500) */
#define TMRN_IMSR1 0x121 /* Initial MSR Register 1 (e6500) */
#define TMRN_INIA0 0x140 /* Next Instruction Address Register 0 */

3
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -70,7 +70,8 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp)
}
/* Lastly try successively smaller sizes from the page allocator */
while (!hpt && order > PPC_MIN_HPT_ORDER) {
/* Only do this if userspace didn't specify a size via ioctl */
while (!hpt && order > PPC_MIN_HPT_ORDER && !htab_orderp) {
hpt = __get_free_pages(GFP_KERNEL|__GFP_ZERO|__GFP_REPEAT|
__GFP_NOWARN, order - PAGE_SHIFT);
if (!hpt)

2
arch/powerpc/kvm/book3s_hv_rm_mmu.c
View File

@ -470,6 +470,8 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
note_hpte_modification(kvm, rev);
unlock_hpte(hpte, 0);
if (v & HPTE_V_ABSENT)
v = (v & ~HPTE_V_ABSENT) | HPTE_V_VALID;
hpret[0] = v;
hpret[1] = r;
return H_SUCCESS;

29
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -150,6 +150,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
cmpwi cr1, r12, BOOK3S_INTERRUPT_MACHINE_CHECK
cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL
beq 11f
cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL
beq 15f /* Invoke the H_DOORBELL handler */
cmpwi cr2, r12, BOOK3S_INTERRUPT_HMI
beq cr2, 14f /* HMI check */
@ -174,6 +176,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
mtspr SPRN_HSRR1, r7
b hmi_exception_after_realmode
15: mtspr SPRN_HSRR0, r8
mtspr SPRN_HSRR1, r7
ba 0xe80
kvmppc_primary_no_guest:
/* We handle this much like a ceded vcpu */
/* put the HDEC into the DEC, since HDEC interrupts don't wake us */
@ -2377,7 +2383,6 @@ machine_check_realmode:
mr r3, r9 /* get vcpu pointer */
bl kvmppc_realmode_machine_check
nop
cmpdi r3, 0 /* Did we handle MCE ? */
ld r9, HSTATE_KVM_VCPU(r13)
li r12, BOOK3S_INTERRUPT_MACHINE_CHECK
/*
@ -2390,13 +2395,18 @@ machine_check_realmode:
* The old code used to return to host for unhandled errors which
* was causing guest to hang with soft lockups inside guest and
* makes it difficult to recover guest instance.
*
* if we receive machine check with MSR(RI=0) then deliver it to
* guest as machine check causing guest to crash.
*/
ld r10, VCPU_PC(r9)
ld r11, VCPU_MSR(r9)
andi. r10, r11, MSR_RI /* check for unrecoverable exception */
beq 1f /* Deliver a machine check to guest */
ld r10, VCPU_PC(r9)
cmpdi r3, 0 /* Did we handle MCE ? */
bne 2f /* Continue guest execution. */
/* If not, deliver a machine check. SRR0/1 are already set */
li r10, BOOK3S_INTERRUPT_MACHINE_CHECK
ld r11, VCPU_MSR(r9)
1: li r10, BOOK3S_INTERRUPT_MACHINE_CHECK
bl kvmppc_msr_interrupt
2: b fast_interrupt_c_return
@ -2436,14 +2446,19 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
/* hypervisor doorbell */
3: li r12, BOOK3S_INTERRUPT_H_DOORBELL
/*
* Clear the doorbell as we will invoke the handler
* explicitly in the guest exit path.
*/
lis r6, (PPC_DBELL_SERVER << (63-36))@h
PPC_MSGCLR(6)
/* see if it's a host IPI */
li r3, 1
lbz r0, HSTATE_HOST_IPI(r13)
cmpwi r0, 0
bnelr
/* if not, clear it and return -1 */
lis r6, (PPC_DBELL_SERVER << (63-36))@h
PPC_MSGCLR(6)
/* if not, return -1 */
li r3, -1
blr

3
arch/powerpc/kvm/e500.c
View File

@ -237,7 +237,8 @@ void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
struct kvm_book3e_206_tlb_entry *gtlbe)
{
struct vcpu_id_table *idt = vcpu_e500->idt;
unsigned int pr, tid, ts, pid;
unsigned int pr, tid, ts;
int pid;
u32 val, eaddr;
unsigned long flags;

19
arch/powerpc/kvm/e500_emulate.c
View File

@ -15,6 +15,7 @@
#include <asm/kvm_ppc.h>
#include <asm/disassemble.h>
#include <asm/dbell.h>
#include <asm/reg_booke.h>
#include "booke.h"
#include "e500.h"
@ -22,6 +23,7 @@
#define XOP_DCBTLS 166
#define XOP_MSGSND 206
#define XOP_MSGCLR 238
#define XOP_MFTMR 366
#define XOP_TLBIVAX 786
#define XOP_TLBSX 914
#define XOP_TLBRE 946
@ -113,6 +115,19 @@ static int kvmppc_e500_emul_dcbtls(struct kvm_vcpu *vcpu)
return EMULATE_DONE;
}
static int kvmppc_e500_emul_mftmr(struct kvm_vcpu *vcpu, unsigned int inst,
int rt)
{
/* Expose one thread per vcpu */
if (get_tmrn(inst) == TMRN_TMCFG0) {
kvmppc_set_gpr(vcpu, rt,
1 | (1 << TMRN_TMCFG0_NATHRD_SHIFT));
return EMULATE_DONE;
}
return EMULATE_FAIL;
}
int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
@ -165,6 +180,10 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu,
emulated = kvmppc_e500_emul_tlbivax(vcpu, ea);
break;
case XOP_MFTMR:
emulated = kvmppc_e500_emul_mftmr(vcpu, inst, rt);
break;
case XOP_EHPRIV:
emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst,
advance);

4
arch/powerpc/kvm/e500_mmu_host.c
View File

@ -406,7 +406,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) {
unsigned long gfn_start, gfn_end;
tsize_pages = 1 << (tsize - 2);
tsize_pages = 1UL << (tsize - 2);
gfn_start = gfn & ~(tsize_pages - 1);
gfn_end = gfn_start + tsize_pages;
@ -447,7 +447,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
}
if (likely(!pfnmap)) {
tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
tsize_pages = 1UL << (tsize + 10 - PAGE_SHIFT);
pfn = gfn_to_pfn_memslot(slot, gfn);
if (is_error_noslot_pfn(pfn)) {
if (printk_ratelimit())

3
arch/powerpc/kvm/powerpc.c
View File

@ -559,6 +559,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
else
r = num_online_cpus();
break;
case KVM_CAP_NR_MEMSLOTS:
r = KVM_USER_MEM_SLOTS;
break;
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;
break;