KVM: nSVM: remove HF_HIF_MASK

The L1 flags can be found in the save area of svm->nested.hsave, fish
it from there so that there is one fewer thing to migrate.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -1595,7 +1595,6 @@ enum {
 };
 
 #define HF_GIF_MASK		(1 << 0)
-#define HF_HIF_MASK		(1 << 1)
 #define HF_NMI_MASK		(1 << 3)
 #define HF_IRET_MASK		(1 << 4)
 #define HF_GUEST_MASK		(1 << 5) /* VCPU is in guest-mode */

arch/x86/kvm/svm/nested.c

@@ -371,11 +371,6 @@ void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
 			  struct vmcb *nested_vmcb)
 {
 	svm->nested.vmcb = vmcb_gpa;
-	if (kvm_get_rflags(&svm->vcpu) & X86_EFLAGS_IF)
-		svm->vcpu.arch.hflags |= HF_HIF_MASK;
-	else
-		svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
-
 	load_nested_vmcb_control(svm, &nested_vmcb->control);
 	nested_prepare_vmcb_save(svm, nested_vmcb);
 	nested_prepare_vmcb_control(svm);

arch/x86/kvm/svm/svm.c

@@ -3105,7 +3105,7 @@ bool svm_interrupt_blocked(struct kvm_vcpu *vcpu)
 	if (is_guest_mode(vcpu)) {
 		/* As long as interrupts are being delivered...  */
 		if ((svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK)
-		    ? !(svm->vcpu.arch.hflags & HF_HIF_MASK)
+		    ? !(svm->nested.hsave->save.rflags & X86_EFLAGS_IF)
 		    : !(kvm_get_rflags(vcpu) & X86_EFLAGS_IF))
 			return true;