KVM: remove realmode_lmsw function.

Use (get|set)_cr callback to emulate lmsw inside emulator.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9d474c7..b99cec1 100644 (file)
--- 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 (file)
--- 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 94a2975..c382e97 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4098,13 +4098,6 @@ 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];