d7e28ffe6c
This is the code for the "lg.ko" module, which allows lguest guests to be launched. [akpm@linux-foundation.org: update for futex-new-private-futexes] [akpm@linux-foundation.org: build fix] [jmorris@namei.org: lguest: use hrtimers] [akpm@linux-foundation.org: x86_64 build fix] Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* Things the lguest guest needs to know. Note: like all lguest interfaces,
|
|
* this is subject to wild and random change between versions. */
|
|
#ifndef _ASM_LGUEST_H
|
|
#define _ASM_LGUEST_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/irq.h>
|
|
|
|
#define LHCALL_FLUSH_ASYNC 0
|
|
#define LHCALL_LGUEST_INIT 1
|
|
#define LHCALL_CRASH 2
|
|
#define LHCALL_LOAD_GDT 3
|
|
#define LHCALL_NEW_PGTABLE 4
|
|
#define LHCALL_FLUSH_TLB 5
|
|
#define LHCALL_LOAD_IDT_ENTRY 6
|
|
#define LHCALL_SET_STACK 7
|
|
#define LHCALL_TS 8
|
|
#define LHCALL_SET_CLOCKEVENT 9
|
|
#define LHCALL_HALT 10
|
|
#define LHCALL_GET_WALLCLOCK 11
|
|
#define LHCALL_BIND_DMA 12
|
|
#define LHCALL_SEND_DMA 13
|
|
#define LHCALL_SET_PTE 14
|
|
#define LHCALL_SET_PMD 15
|
|
#define LHCALL_LOAD_TLS 16
|
|
|
|
#define LG_CLOCK_MIN_DELTA 100UL
|
|
#define LG_CLOCK_MAX_DELTA ULONG_MAX
|
|
|
|
#define LGUEST_TRAP_ENTRY 0x1F
|
|
|
|
static inline unsigned long
|
|
hcall(unsigned long call,
|
|
unsigned long arg1, unsigned long arg2, unsigned long arg3)
|
|
{
|
|
asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
|
|
: "=a"(call)
|
|
: "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
|
|
: "memory");
|
|
return call;
|
|
}
|
|
|
|
void async_hcall(unsigned long call,
|
|
unsigned long arg1, unsigned long arg2, unsigned long arg3);
|
|
|
|
/* Can't use our min() macro here: needs to be a constant */
|
|
#define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32)
|
|
|
|
#define LHCALL_RING_SIZE 64
|
|
struct hcall_ring
|
|
{
|
|
u32 eax, edx, ebx, ecx;
|
|
};
|
|
|
|
/* All the good stuff happens here: guest registers it with LGUEST_INIT */
|
|
struct lguest_data
|
|
{
|
|
/* Fields which change during running: */
|
|
/* 512 == enabled (same as eflags) */
|
|
unsigned int irq_enabled;
|
|
/* Interrupts blocked by guest. */
|
|
DECLARE_BITMAP(blocked_interrupts, LGUEST_IRQS);
|
|
|
|
/* Virtual address of page fault. */
|
|
unsigned long cr2;
|
|
|
|
/* Async hypercall ring. 0xFF == done, 0 == pending. */
|
|
u8 hcall_status[LHCALL_RING_SIZE];
|
|
struct hcall_ring hcalls[LHCALL_RING_SIZE];
|
|
|
|
/* Fields initialized by the hypervisor at boot: */
|
|
/* Memory not to try to access */
|
|
unsigned long reserve_mem;
|
|
/* ID of this guest (used by network driver to set ethernet address) */
|
|
u16 guestid;
|
|
/* KHz for the TSC clock. */
|
|
u32 tsc_khz;
|
|
|
|
/* Fields initialized by the guest at boot: */
|
|
/* Instruction range to suppress interrupts even if enabled */
|
|
unsigned long noirq_start, noirq_end;
|
|
};
|
|
extern struct lguest_data lguest_data;
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _ASM_LGUEST_H */
|