Syzbot CI

Subject	KVM: nSVM: Optimize nSVM TLB flushes
Author	yosry@kernel.org
Date	2026-10-12 23:36:12 +0000 UTC
Version
Cc	jiangshanlai@gmail.com jmattson@google.com kvm@vger.kernel.org linux-kernel@vger.kernel.org mlevitsk@redhat.com pbonzini@redhat.com seanjc@google.com stable@vger.kernel.org thomas.lendacky@amd.com vkuznets@redhat.com yosry@kernel.org

Subject

Author

yosry@kernel.org

Date

2026-10-12 23:36:12 +0000 UTC

Version

jiangshanlai@gmail.com jmattson@google.com kvm@vger.kernel.org linux-kernel@vger.kernel.org mlevitsk@redhat.com pbonzini@redhat.com seanjc@google.com stable@vger.kernel.org thomas.lendacky@amd.com vkuznets@redhat.com yosry@kernel.org

Name	Content [All]
[PATCH v3 01/27] KVM: nSVM: Flush the TLB after forcefully leaving nested	[Body]
[PATCH v3 02/27] KVM: SVM: Document number of ASIDs CPUID setting	[Body]
[PATCH v3 03/27] KVM: VMX: Generalize VPID allocation to be vendor-neutral	[Body]
[PATCH v3 04/27] KVM: x86/mmu: Support specifying reserved TLB tags	[Body]
[PATCH v3 05/27] KVM: SVM: Add helpers to set/clear ASID flush in VMCB	[Body]
[PATCH v3 06/27] KVM: SVM: Fallback to flush everything if FLUSHBYASID is not available	[Body]
[PATCH v3 07/27] KVM: SEV: Do ASID initialization at VMCB initialization	[Body]
[PATCH v3 08/27] KVM: SEV: Expose sev_get_asid() outside of sev.c	[Body]
[PATCH v3 09/27] KVM: SEV: Explicitly initialize the per vCPU ASID on SEV VM migration	[Body]
[PATCH v3 10/27] KVM: SVM: Use a static ASID per vCPU	[Body]
[PATCH v3 11/27] KVM: SVM: Only flush the fallback ASID when used by a different vCPU	[Body]
[PATCH v3 12/27] KVM: nSVM: Drop svm->nested.initialized	[Body]
[PATCH v3 13/27] KVM: nSVM: Add a placeholder ASID for L2	[Body]
[PATCH v3 14/27] KVM: x86: hyper-v: Rename kvm_hv_vcpu_purge_flush_tlb()	[Body]
[PATCH v3 15/27] KVM: x86: hyper-v: Allow purging all TLB flush FIFOs	[Body]
[PATCH v3 16/27] KVM: nSVM: Flush both L1 and L2 ASIDs on KVM_REQ_TLB_FLUSH	[Body]
[PATCH v3 17/27] KVM: nSVM: Always switch VMCB before leaving guest mode	[Body]
[PATCH v3 18/27] KVM: nSVM: Split nested_svm_transition_tlb_flush() into entry/exit fns	[Body]
[PATCH v3 19/27] KVM: nSVM: Service local TLB flushes before nested transitions	[Body]
[PATCH v3 20/27] KVM: x86: Add KVM_REQ_MMU_SYNC_ALL_ROOTS	[Body]
[PATCH v3 21/27] KVM: nSVM: Handle nested TLB flush requests through TLB_CONTROL	[Body]
[PATCH v3 22/27] KVM: nSVM: Flush the TLB if L1 changes L2's ASID in vmcb12	[Body]
[PATCH v3 23/27] KVM: nSVM: Do not reset TLB_CONTROL in vmcb02 on nested VM-Enter	[Body]
[PATCH v3 24/27] KVM: nSVM: Flush L2's ASID when emulating INVLPGA	[Body]
[PATCH v3 25/27] KVM: nSVM: Flush the ASID on nested transitions if shared by L1 and L2	[Body]
[PATCH v3 26/27] KVM: nSVM: Use different ASIDs for L1 and L2	[Body]
[PATCH v3 27/27] KVM: selftests: Add a test for nested TLB flushes	[Body]

Name

Content [All]

[PATCH v3 01/27] KVM: nSVM: Flush the TLB after forcefully leaving nested

[PATCH v3 02/27] KVM: SVM: Document number of ASIDs CPUID setting

[PATCH v3 03/27] KVM: VMX: Generalize VPID allocation to be vendor-neutral

[PATCH v3 04/27] KVM: x86/mmu: Support specifying reserved TLB tags

[PATCH v3 05/27] KVM: SVM: Add helpers to set/clear ASID flush in VMCB

[PATCH v3 06/27] KVM: SVM: Fallback to flush everything if FLUSHBYASID is not available

[PATCH v3 07/27] KVM: SEV: Do ASID initialization at VMCB initialization

[PATCH v3 08/27] KVM: SEV: Expose sev_get_asid() outside of sev.c

[PATCH v3 09/27] KVM: SEV: Explicitly initialize the per vCPU ASID on SEV VM migration

[PATCH v3 10/27] KVM: SVM: Use a static ASID per vCPU

[PATCH v3 11/27] KVM: SVM: Only flush the fallback ASID when used by a different vCPU

[PATCH v3 12/27] KVM: nSVM: Drop svm->nested.initialized

[PATCH v3 13/27] KVM: nSVM: Add a placeholder ASID for L2

[PATCH v3 14/27] KVM: x86: hyper-v: Rename kvm_hv_vcpu_purge_flush_tlb()

[PATCH v3 15/27] KVM: x86: hyper-v: Allow purging all TLB flush FIFOs

[PATCH v3 16/27] KVM: nSVM: Flush both L1 and L2 ASIDs on KVM_REQ_TLB_FLUSH

[PATCH v3 17/27] KVM: nSVM: Always switch VMCB before leaving guest mode

[PATCH v3 18/27] KVM: nSVM: Split nested_svm_transition_tlb_flush() into entry/exit fns

[PATCH v3 19/27] KVM: nSVM: Service local TLB flushes before nested transitions

[PATCH v3 20/27] KVM: x86: Add KVM_REQ_MMU_SYNC_ALL_ROOTS

[PATCH v3 21/27] KVM: nSVM: Handle nested TLB flush requests through TLB_CONTROL

[PATCH v3 22/27] KVM: nSVM: Flush the TLB if L1 changes L2's ASID in vmcb12

[PATCH v3 23/27] KVM: nSVM: Do not reset TLB_CONTROL in vmcb02 on nested VM-Enter

[PATCH v3 24/27] KVM: nSVM: Flush L2's ASID when emulating INVLPGA

[PATCH v3 25/27] KVM: nSVM: Flush the ASID on nested transitions if shared by L1 and L2

[PATCH v3 26/27] KVM: nSVM: Use different ASIDs for L1 and L2

[PATCH v3 27/27] KVM: selftests: Add a test for nested TLB flushes

Session 2026-10-12

Steps Failed

ID (for dev)	0e7dd512-e388-4afa-98fb-b76ce2304e0b
Status	finished
Triaged	OK [Log] [Trajectory]
Execution Log	[Link]

Test	Base	Patched	Verdict
[KASAN] Build Base	6bd2905303c58679e303941b7d8ae8c074cd95ce [Config]		passed [Log]
[KASAN] Boot test: Base	6bd2905303c58679e303941b7d8ae8c074cd95ce [Config]		passed [Log]
[KASAN] Build Patched		6bd2905303c58679e303941b7d8ae8c074cd95ce [Config] [patched]	passed [Log]
[KASAN] Boot test: Patched		6bd2905303c58679e303941b7d8ae8c074cd95ce [Config] [patched]	passed [Log]
[KASAN] Fuzz	6bd2905303c58679e303941b7d8ae8c074cd95ce [Config]	6bd2905303c58679e303941b7d8ae8c074cd95ce [Config] [patched]	error [Log] [Artifacts]

Patches (27)

Series Summary

Sessions

Session 2026-10-12