linux-kernel - [PATCH v4 19/38] KVM: VMX: Add macros to wrap around {secondary,tertiary}_exec_controls

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Message-ID: <20250324173121.1275209-20-mizhang@google.com>
Date: Mon, 24 Mar 2025 17:30:59 +0000
From: Mingwei Zhang <mizhang@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, Liang@...gle.com, 
	Kan <kan.liang@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, 
	kvm@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	Mingwei Zhang <mizhang@...gle.com>, Yongwei Ma <yongwei.ma@...el.com>, 
	Xiong Zhang <xiong.y.zhang@...ux.intel.com>, Dapeng Mi <dapeng1.mi@...ux.intel.com>, 
	Jim Mattson <jmattson@...gle.com>, Sandipan Das <sandipan.das@....com>, 
	Zide Chen <zide.chen@...el.com>, Eranian Stephane <eranian@...gle.com>, 
	Das Sandipan <Sandipan.Das@....com>, Shukla Manali <Manali.Shukla@....com>, 
	Nikunj Dadhania <nikunj.dadhania@....com>
Subject: [PATCH v4 19/38] KVM: VMX: Add macros to wrap around {secondary,tertiary}_exec_controls_changebit()

From: Dapeng Mi <dapeng1.mi@...ux.intel.com>

Add macros around helpers that changes VMCS bits to simplify vmx exec ctrl
bits clearing and setting.

No function change intended.

Suggested-by: Sean Christopherson <seanjc@...gle.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
Signed-off-by: Mingwei Zhang <mizhang@...gle.com>
---
 arch/x86/kvm/vmx/vmx.c | 20 +++++++-------------
 arch/x86/kvm/vmx/vmx.h |  8 ++++++++
 2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 9c4b3c2b1d65..ff66f17d6358 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4471,19 +4471,13 @@ void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
 
 	pin_controls_set(vmx, vmx_pin_based_exec_ctrl(vmx));
 
-	if (kvm_vcpu_apicv_active(vcpu)) {
-		secondary_exec_controls_setbit(vmx,
-					       SECONDARY_EXEC_APIC_REGISTER_VIRT |
-					       SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-		if (enable_ipiv)
-			tertiary_exec_controls_setbit(vmx, TERTIARY_EXEC_IPI_VIRT);
-	} else {
-		secondary_exec_controls_clearbit(vmx,
-						 SECONDARY_EXEC_APIC_REGISTER_VIRT |
-						 SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-		if (enable_ipiv)
-			tertiary_exec_controls_clearbit(vmx, TERTIARY_EXEC_IPI_VIRT);
-	}
+	secondary_exec_controls_changebit(vmx,
+					  SECONDARY_EXEC_APIC_REGISTER_VIRT |
+					  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY,
+					  kvm_vcpu_apicv_active(vcpu));
+	if (enable_ipiv)
+		tertiary_exec_controls_changebit(vmx, TERTIARY_EXEC_IPI_VIRT,
+						 kvm_vcpu_apicv_active(vcpu));
 
 	vmx_update_msr_bitmap_x2apic(vcpu);
 }
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index 8b111ce1087c..5c505af553c8 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -612,6 +612,14 @@ static __always_inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##b
 {												\
 	BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_##uname | KVM_OPTIONAL_VMX_##uname)));		\
 	lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val);				\
+}												\
+static __always_inline void lname##_controls_changebit(struct vcpu_vmx *vmx, u##bits val,	\
+						       bool set)				\
+{												\
+	if (set)										\
+		lname##_controls_setbit(vmx, val);						\
+	else											\
+		lname##_controls_clearbit(vmx, val);						\
 }
 BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32)
 BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32)
-- 
2.49.0.395.g12beb8f557-goog