linux-kernel - [PATCH 22/28] KVM: nSVM: remove HF_VINTR

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Message-Id: <20200526172308.111575-23-pbonzini@redhat.com>
Date:   Tue, 26 May 2020 13:23:02 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     vkuznets@...hat.com, mlevitsk@...hat.com,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: [PATCH 22/28] KVM: nSVM: remove HF_VINTR_MASK

Now that the int_ctl field is stored in svm->nested.ctl.int_ctl, we can
use it instead of vcpu->arch.hflags to check whether L2 is running
in V_INTR_MASKING mode.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/include/asm/kvm_host.h | 1 -
 arch/x86/kvm/svm/nested.c       | 6 +-----
 arch/x86/kvm/svm/svm.c          | 2 +-
 arch/x86/kvm/svm/svm.h          | 4 +++-
 4 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e6f2e1a2dab6..0dfc522f96cc 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1596,7 +1596,6 @@ enum {
 
 #define HF_GIF_MASK		(1 << 0)
 #define HF_HIF_MASK		(1 << 1)
-#define HF_VINTR_MASK		(1 << 2)
 #define HF_NMI_MASK		(1 << 3)
 #define HF_IRET_MASK		(1 << 4)
 #define HF_GUEST_MASK		(1 << 5) /* VCPU is in guest-mode */
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 9746ccbdfd2a..56d45fe6eb45 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -118,7 +118,7 @@ void recalc_intercepts(struct vcpu_svm *svm)
 	c->intercept_exceptions = h->intercept_exceptions;
 	c->intercept = h->intercept;
 
-	if (svm->vcpu.arch.hflags & HF_VINTR_MASK) {
+	if (g->int_ctl & V_INTR_MASKING_MASK) {
 		/* We only want the cr8 intercept bits of L1 */
 		c->intercept_cr &= ~(1U << INTERCEPT_CR8_READ);
 		c->intercept_cr &= ~(1U << INTERCEPT_CR8_WRITE);
@@ -338,10 +338,6 @@ static void nested_prepare_vmcb_control(struct vcpu_svm *svm)
 	kvm_mmu_reset_context(&svm->vcpu);
 
 	svm_flush_tlb(&svm->vcpu);
-	if (svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK)
-		svm->vcpu.arch.hflags |= HF_VINTR_MASK;
-	else
-		svm->vcpu.arch.hflags &= ~HF_VINTR_MASK;
 
 	svm->vmcb->control.tsc_offset = svm->vcpu.arch.tsc_offset =
 		svm->vcpu.arch.l1_tsc_offset + svm->nested.ctl.tsc_offset;
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index af5d4ae00cb4..d1a6e2f3db55 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3104,7 +3104,7 @@ bool svm_interrupt_blocked(struct kvm_vcpu *vcpu)
 
 	if (is_guest_mode(vcpu)) {
 		/* As long as interrupts are being delivered...  */
-		if ((svm->vcpu.arch.hflags & HF_VINTR_MASK)
+		if ((svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK)
 		    ? !(svm->vcpu.arch.hflags & HF_HIF_MASK)
 		    : !(kvm_get_rflags(vcpu) & X86_EFLAGS_IF))
 			return true;
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 10b7b55720a0..be8e830f83fa 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -367,7 +367,9 @@ void svm_set_gif(struct vcpu_svm *svm, bool value);
 
 static inline bool svm_nested_virtualize_tpr(struct kvm_vcpu *vcpu)
 {
-	return is_guest_mode(vcpu) && (vcpu->arch.hflags & HF_VINTR_MASK);
+	struct vcpu_svm *svm = to_svm(vcpu);
+
+	return is_guest_mode(vcpu) && (svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK);
 }
 
 static inline bool nested_exit_on_smi(struct vcpu_svm *svm)
-- 
2.26.2