Syzbot CI

Subject	KVM: x86: Cleaning up the KVM clock mess, part 2
Author	dwmw2@infradead.org
Date	2026-11-09 01:20:47 +0000 UTC
Version
Cc	boris.ostrovsky@oracle.com bp@alien8.de corbet@lwn.net dave.hansen@linux.intel.com dongli.zhang@oracle.com dwmw2@infradead.org dwmw@amazon.co.uk hpa@zytor.com jalliste@amazon.com jgross@suse.com jic23@kernel.org joe.jin@oracle.com joey.gouly@arm.com kvm@vger.kernel.org linux-doc@vger.kernel.org linux-kernel@vger.kernel.org linux-kselftest@vger.kernel.org maz@kernel.org mingo@redhat.com paul@xen.org pbonzini@redhat.com sascha.bischoff@arm.com seanjc@google.com skhan@linuxfoundation.org tglx@kernel.org vkuznets@redhat.com x86@kernel.org xen-devel@lists.xenproject.org

Subject

KVM: x86: Cleaning up the KVM clock mess, part 2

Author

dwmw2@infradead.org

Date

2026-11-09 01:20:47 +0000 UTC

Version

boris.ostrovsky@oracle.com bp@alien8.de corbet@lwn.net dave.hansen@linux.intel.com dongli.zhang@oracle.com dwmw2@infradead.org dwmw@amazon.co.uk hpa@zytor.com jalliste@amazon.com jgross@suse.com jic23@kernel.org joe.jin@oracle.com joey.gouly@arm.com kvm@vger.kernel.org linux-doc@vger.kernel.org linux-kernel@vger.kernel.org linux-kselftest@vger.kernel.org maz@kernel.org mingo@redhat.com paul@xen.org pbonzini@redhat.com sascha.bischoff@arm.com seanjc@google.com skhan@linuxfoundation.org tglx@kernel.org vkuznets@redhat.com x86@kernel.org xen-devel@lists.xenproject.org

Name	Content [All]
[PATCH v12 01/24] KVM: x86: Improve synchronization in kvm_synchronize_tsc()	[Body]
[PATCH v12 02/24] KVM: x86: Kill last_tsc_{nsec,write,offset} fields	[Body]
[PATCH v12 03/24] KVM: x86: Replace nr_vcpus_matched_tsc count with all_vcpus_matched_tsc bool	[Body]
[PATCH v12 04/24] KVM: x86: Allow KVM master clock mode when TSCs are offset from each other	[Body]
[PATCH v12 05/24] KVM: x86: Factor out kvm_use_master_clock()	[Body]
[PATCH v12 06/24] KVM: x86: Avoid gratuitous global clock updates	[Body]
[PATCH v12 07/24] KVM: x86: Avoid redundant masterclock updates from multiple vCPUs	[Body]
[PATCH v12 08/24] KVM: x86: Re-synchronize TSC after KVM_SET_TSC_KHZ	[Body]
[PATCH v12 09/24] KVM: x86: Cache host vclock_mode for masterclock eligibility checks	[Body]
[PATCH v12 10/24] KVM: x86: Remove pvclock_gtod_data and private timekeeping code	[Body]
[PATCH v12 11/24] KVM: x86: Activate master clock from kvm_arch_init_vm()	[Body]
[PATCH v12 12/24] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms	[Body]
[PATCH v12 13/24] KVM: selftests: Use UAPI pvclock-abi.h in xen_shinfo_test	[Body]
[PATCH v12 14/24] KVM: x86: Add KVM_[GS]ET_CLOCK_GUEST for accurate KVM clock migration	[Body]
[PATCH v12 15/24] KVM: selftests: Add library helpers for clock and TSC-offset ioctls	[Body]
[PATCH v12 16/24] KVM: x86: Add KVM_VCPU_TSC_SCALE and fix the documentation on TSC migration	[Body]
[PATCH v12 17/24] KVM: selftests: Add KVM/PV clock selftest to prove timer correction	[Body]
[PATCH v12 18/24] KVM: selftests: Add master clock offset test	[Body]
[PATCH v12 19/24] KVM: selftests: Add Xen/generic CPUID timing leaf test	[Body]
[PATCH v12 20/24] KVM: selftests: Add Xen runstate migration test	[Body]
[PATCH v12 21/24] KVM: selftests: Test that the first user TSC write is honoured exactly	[Body]
[PATCH v12 22/24] KVM: x86/xen: Drop open-coded fallback clock read in kvm_xen_start_timer()	[Body]
[PATCH v12 23/24] KVM: x86: Use a single time snapshot in kvm_vm_ioctl_set_clock()	[Body]
[PATCH v12 24/24] KVM: x86: Keep master clock for guests using legacy MSR_KVM_SYSTEM_TIME	[Body]

Name

Content [All]

[PATCH v12 01/24] KVM: x86: Improve synchronization in kvm_synchronize_tsc()

[PATCH v12 02/24] KVM: x86: Kill last_tsc_{nsec,write,offset} fields

[PATCH v12 03/24] KVM: x86: Replace nr_vcpus_matched_tsc count with all_vcpus_matched_tsc bool

[PATCH v12 04/24] KVM: x86: Allow KVM master clock mode when TSCs are offset from each other

[PATCH v12 05/24] KVM: x86: Factor out kvm_use_master_clock()

[PATCH v12 06/24] KVM: x86: Avoid gratuitous global clock updates

[PATCH v12 07/24] KVM: x86: Avoid redundant masterclock updates from multiple vCPUs

[PATCH v12 08/24] KVM: x86: Re-synchronize TSC after KVM_SET_TSC_KHZ

[PATCH v12 09/24] KVM: x86: Cache host vclock_mode for masterclock eligibility checks

[PATCH v12 10/24] KVM: x86: Remove pvclock_gtod_data and private timekeeping code

[PATCH v12 11/24] KVM: x86: Activate master clock from kvm_arch_init_vm()

[PATCH v12 12/24] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms

[PATCH v12 13/24] KVM: selftests: Use UAPI pvclock-abi.h in xen_shinfo_test

[PATCH v12 14/24] KVM: x86: Add KVM_[GS]ET_CLOCK_GUEST for accurate KVM clock migration

[PATCH v12 15/24] KVM: selftests: Add library helpers for clock and TSC-offset ioctls

[PATCH v12 16/24] KVM: x86: Add KVM_VCPU_TSC_SCALE and fix the documentation on TSC migration

[PATCH v12 17/24] KVM: selftests: Add KVM/PV clock selftest to prove timer correction

[PATCH v12 18/24] KVM: selftests: Add master clock offset test

[PATCH v12 19/24] KVM: selftests: Add Xen/generic CPUID timing leaf test

[PATCH v12 20/24] KVM: selftests: Add Xen runstate migration test

[PATCH v12 21/24] KVM: selftests: Test that the first user TSC write is honoured exactly

[PATCH v12 22/24] KVM: x86/xen: Drop open-coded fallback clock read in kvm_xen_start_timer()

[PATCH v12 23/24] KVM: x86: Use a single time snapshot in kvm_vm_ioctl_set_clock()

[PATCH v12 24/24] KVM: x86: Keep master clock for guests using legacy MSR_KVM_SYSTEM_TIME

Session 2026-11-09

Passed

ID (for dev)	2e83d6d5-0450-4a5c-8cb0-c569e8d9ec72
Status	finished
Triaged	OK [Log] [Trajectory]
Execution Log	[Link]

Test	Base	Patched	Verdict
[KASAN] Build Base	dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config]		passed [Log]
[KASAN] Boot test: Base	dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config]		passed [Log]
[KASAN] Build Patched		dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config] [patched]	passed [Log]
[KASAN] Boot test: Patched		dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config] [patched]	passed [Log]
[KASAN] Fuzz	dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config]	dea4f6380f4ec96e8f3b0aaf2343764bd0d25ef4 [Config] [patched]	passed [Log] [Artifacts]

Patches (24)

Series Summary

Sessions

Session 2026-11-09