linux-kernel - [PATCH 10/10] KVM: SVM: Rename "avic_physical_id_cache" to "avic_physical_id

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Date:   Tue, 15 Aug 2023 14:35:33 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Joerg Roedel <joro@...tes.org>
Cc:     kvm@...r.kernel.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH 10/10] KVM: SVM: Rename "avic_physical_id_cache" to "avic_physical_id_entry"

Rename the vCPU's pointer to its AVIC Physical ID entry from "cache" to
"entry".  While the field technically caches the result of the pointer
calculation, it's all too easy to misinterpret the name and think that
the field somehow caches the _data_ in the table.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/kvm/svm/avic.c | 10 +++++-----
 arch/x86/kvm/svm/svm.h  |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index 6803e2d7bc22..8d162ff83aa8 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -310,7 +310,7 @@ static int avic_init_backing_page(struct kvm_vcpu *vcpu)
 		    AVIC_PHYSICAL_ID_ENTRY_VALID_MASK;
 	WRITE_ONCE(table[id], new_entry);
 
-	svm->avic_physical_id_cache = &table[id];
+	svm->avic_physical_id_entry = &table[id];
 
 	return 0;
 }
@@ -1028,14 +1028,14 @@ void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 	if (kvm_vcpu_is_blocking(vcpu))
 		return;
 
-	entry = READ_ONCE(*(svm->avic_physical_id_cache));
+	entry = READ_ONCE(*(svm->avic_physical_id_entry));
 	WARN_ON_ONCE(entry & AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK);
 
 	entry &= ~AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK;
 	entry |= (h_physical_id & AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK);
 	entry |= AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK;
 
-	WRITE_ONCE(*(svm->avic_physical_id_cache), entry);
+	WRITE_ONCE(*(svm->avic_physical_id_entry), entry);
 	avic_update_iommu_vcpu_affinity(vcpu, h_physical_id, true);
 }
 
@@ -1046,7 +1046,7 @@ void avic_vcpu_put(struct kvm_vcpu *vcpu)
 
 	lockdep_assert_preemption_disabled();
 
-	entry = READ_ONCE(*(svm->avic_physical_id_cache));
+	entry = READ_ONCE(*(svm->avic_physical_id_entry));
 
 	/* Nothing to do if IsRunning == '0' due to vCPU blocking. */
 	if (!(entry & AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK))
@@ -1055,7 +1055,7 @@ void avic_vcpu_put(struct kvm_vcpu *vcpu)
 	avic_update_iommu_vcpu_affinity(vcpu, -1, 0);
 
 	entry &= ~AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK;
-	WRITE_ONCE(*(svm->avic_physical_id_cache), entry);
+	WRITE_ONCE(*(svm->avic_physical_id_entry), entry);
 }
 
 void avic_refresh_virtual_apic_mode(struct kvm_vcpu *vcpu)
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 8b798982e5d0..4362048493d1 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -261,7 +261,7 @@ struct vcpu_svm {
 
 	u32 ldr_reg;
 	u32 dfr_reg;
-	u64 *avic_physical_id_cache;
+	u64 *avic_physical_id_entry;
 
 	/*
 	 * Per-vcpu list of struct amd_svm_iommu_ir:
-- 
2.41.0.694.ge786442a9b-goog