From: Gleb Natapov <g...@redhat.com>
Use (get|set)_cr callback to emulate lmsw inside emulator.
Signed-off-by: Gleb Natapov <g...@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9d474c7..b99cec1 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -583,8 +583,6 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
-void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
- unsigned long *rflags);
void kvm_enable_efer_bits(u64);
int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 5b060e4..5e2fa61 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2486,8 +2486,8 @@ twobyte_insn:
c->dst.val = ops->get_cr(0, ctxt->vcpu);
break;
case 6: /* lmsw */
- realmode_lmsw(ctxt->vcpu, (u16)c->src.val,
- &ctxt->eflags);
+ ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0ful) |
+ (c->src.val & 0x0f), ctxt->vcpu);
c->dst.type = OP_NONE;
break;
case 7: /* invlpg*/
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b9ace70..6206600 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4099,13 +4099,6 @@ void realmode_lidt(struct kvm_vcpu *vcpu, u16 limit,
unsigned long base)
kvm_x86_ops->set_idt(vcpu, &dt);
}
-void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
- unsigned long *rflags)
-{
- kvm_lmsw(vcpu, msw);
- *rflags = kvm_get_rflags(vcpu);
-}
-
static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i)
{
struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i];
--
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