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KVM: x86 emulator: add new ->halt() callback

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Instead of reaching into vcpu internals.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2011-04-20 15:43:05 +03:00
parent 3cb16fe78c
commit 6c3287f7c5
3 changed files with 8 additions and 1 deletions
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1
arch/x86/include/asm/kvm_emulate.h
View File

@ -186,6 +186,7 @@ struct x86_emulate_ops {
int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value);
int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data);
int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata);
void (*halt)(struct x86_emulate_ctxt *ctxt);
void (*get_fpu)(struct x86_emulate_ctxt *ctxt); /* disables preempt */
void (*put_fpu)(struct x86_emulate_ctxt *ctxt); /* reenables preempt */
int (*intercept)(struct x86_emulate_ctxt *ctxt,

2
arch/x86/kvm/emulate.c
View File

@ -3913,7 +3913,7 @@ special_insn:
c->dst.type = OP_NONE; /* Disable writeback. */
break;
case 0xf4: /* hlt */
ctxt->vcpu->arch.halt_request = 1;
ctxt->ops->halt(ctxt);
break;
case 0xf5: /* cmc */
/* complement carry flag from eflags reg */

6
arch/x86/kvm/x86.c
View File

@ -4351,6 +4351,11 @@ static int emulator_set_msr(struct x86_emulate_ctxt *ctxt,
return kvm_set_msr(emul_to_vcpu(ctxt), msr_index, data);
}
static void emulator_halt(struct x86_emulate_ctxt *ctxt)
{
emul_to_vcpu(ctxt)->arch.halt_request = 1;
}
static void emulator_get_fpu(struct x86_emulate_ctxt *ctxt)
{
preempt_disable();
@ -4400,6 +4405,7 @@ static struct x86_emulate_ops emulate_ops = {
.set_dr = emulator_set_dr,
.set_msr = emulator_set_msr,
.get_msr = emulator_get_msr,
.halt = emulator_halt,
.get_fpu = emulator_get_fpu,
.put_fpu = emulator_put_fpu,
.intercept = emulator_intercept,