KVM: Remove pointer to rflags from realmode_set_cr parameters.

Mov reg, cr instruction doesn't change flags in any meaningful way, so
no need to update rflags after instruction execution.

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

3 files changed, 3 insertions, 7 deletions

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 28826c82d1e2..53f520259471 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -587,8 +587,7 @@ void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
                    unsigned long *rflags);
 
 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
-void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
-                     unsigned long *rflags);
+void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value);
 void kvm_enable_efer_bits(u64);
 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
 int kvm_set_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 670ca8f151d2..91450b5cd49e 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2534,8 +2534,7 @@ twobyte_insn:
         case 0x22: /* mov reg, cr */
                 if (c->modrm_mod != 3)
                         goto cannot_emulate;
-                realmode_set_cr(ctxt->vcpu,
-                                c->modrm_reg, c->modrm_val, &ctxt->eflags);
+                realmode_set_cr(ctxt->vcpu, c->modrm_reg, c->modrm_val);
                 c->dst.type = OP_NONE;
                 break;
         case 0x23: /* mov from reg to dr */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index dd4a7ad63aff..35db4f0db4ea 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4080,13 +4080,11 @@ unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr)
         return value;
 }
 
-void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long val,
-                     unsigned long *rflags)
+void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long val)
 {
         switch (cr) {
         case 0:
                 kvm_set_cr0(vcpu, mk_cr_64(kvm_read_cr0(vcpu), val));
-                *rflags = kvm_get_rflags(vcpu);
                 break;
         case 2:
                 vcpu->arch.cr2 = val;