Kernel KVM virtualization development
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From: Yosry Ahmed <yosry@kernel.org>
To: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Jim Mattson <jmattson@google.com>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Yosry Ahmed <yosry@kernel.org>
Subject: [PATCH v1 09/28] KVM: SEV: Expose sev_get_asid() outside of sev.c
Date: Tue, 28 Jul 2026 00:35:38 +0000	[thread overview]
Message-ID: <20260728003557.1136583-10-yosry@kernel.org> (raw)
In-Reply-To: <20260728003557.1136583-1-yosry@kernel.org>

Move the function definition to svm.h in preparation for using it in
more SVM code.

No functional change intended.

Signed-off-by: Yosry Ahmed <yosry@kernel.org>
---
 arch/x86/kvm/svm/sev.c |  5 -----
 arch/x86/kvm/svm/svm.h | 10 ++++++++++
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 8717da0e9fe8a..3aac702f45b2b 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -313,11 +313,6 @@ static int sev_asid_new(struct kvm_sev_info *sev, unsigned long vm_type)
 	return ret;
 }
 
-static unsigned int sev_get_asid(struct kvm *kvm)
-{
-	return to_kvm_sev_info(kvm)->asid;
-}
-
 static void sev_asid_free(struct kvm_sev_info *sev)
 {
 	struct svm_cpu_data *sd;
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 2f18dff023bc5..d41d189ecf4e1 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -429,6 +429,11 @@ static __always_inline bool is_sev_snp_guest(struct kvm_vcpu *vcpu)
 {
 	return ____sev_snp_guest(vcpu->kvm);
 }
+
+static __always_inline unsigned int sev_get_asid(struct kvm *kvm)
+{
+	return to_kvm_sev_info(kvm)->asid;
+}
 #else
 static __always_inline bool is_sev_guest(struct kvm_vcpu *vcpu)
 {
@@ -443,6 +448,11 @@ static __always_inline bool is_sev_snp_guest(struct kvm_vcpu *vcpu)
 {
 	return false;
 }
+
+static __always_inline unsigned int sev_get_asid(struct kvm *kvm)
+{
+	return 0;
+}
 #endif
 
 static inline bool ghcb_gpa_is_registered(struct vcpu_svm *svm, u64 val)
-- 
2.55.0.229.g6434b31f56-goog


  parent reply	other threads:[~2026-07-28  0:36 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-28  0:35 [PATCH v1 00/28] KVM: nSVM: Optimize nSVM TLB flushes Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 01/28] KVM: nSVM: Flush the TLB after forcefully leaving nested Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 02/28] KVM: SVM: Document number of ASIDs CPUID setting Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 03/28] KVM: VMX: Generalize VPID allocation to be vendor-neutral Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 04/28] KVM: x86/mmu: Support specifying reserved TLB tags Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 05/28] KVM: SVM: Add helpers to set/clear ASID flush in VMCB Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 06/28] KVM: SVM: Fallback to flush everything if FLUSHBYASID is not available Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 07/28] KVM: SVM: Duplicate pre-run ASID check for SEV and non-SEV guests Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 08/28] KVM: SEV: Do ASID initialization at VMCB initialization Yosry Ahmed
2026-07-28  0:35 ` Yosry Ahmed [this message]
2026-07-28  0:35 ` [PATCH v1 10/28] KVM: SVM: Use a static ASID per vCPU Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 11/28] KVM: SVM: Only flush the fallback ASID when used by a different vCPU Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 12/28] KVM: nSVM: Add a placeholder ASID for L2 Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 13/28] KVM: x86: hyper-v: Rename kvm_hv_vcpu_purge_flush_tlb() Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 14/28] KVM: x86: hyper-v: Allow puring all TLB flush FIFOs Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 15/28] KVM: nSVM: Drop svm->nested.initialized Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 16/28] KVM: nSVM: Flush both L1 and L2 ASIDs on KVM_REQ_TLB_FLUSH Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 17/28] KVM: nSVM: Always switch VMCB before leaving guest mode Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 18/28] KVM: nSVM: Split nested_svm_transition_tlb_flush() into entry/exit fns Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 19/28] KVM: nSVM: Service local TLB flushes before nested transitions Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 20/28] KVM: nSVM: Handle nested TLB flush requests through TLB_CONTROL Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 21/28] KVM: nSVM: Flush the TLB if L1 changes L2's ASID in vmcb12 Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 22/28] KVM: nSVM: Do not reset TLB_CONTROL in vmcb02 on nested VM-Enter Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 23/28] KVM: x86/mmu: Rename __kvm_mmu_invalidate_addr() to kvm_mmu_sync_addr() Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 24/28] KVM: x86/mmu: Refactor kvm_mmu_invlpg() to allow skipping the GVA flush Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 25/28] KVM: nSVM: Flush L2's ASID when emulating INVLPGA Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 26/28] KVM: nSVM: Flush the ASID on nested transitions if shared by L1 and L2 Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 27/28] KVM: nSVM: Use different ASIDs for " Yosry Ahmed
2026-07-28  0:35 ` [PATCH v1 28/28] KVM: selftests: Add a test for nested TLB flushes Yosry Ahmed
2026-07-28  1:05 ` [PATCH v1 00/28] KVM: nSVM: Optimize nSVM " Yosry Ahmed
2026-07-28  1:18   ` Sean Christopherson

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