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From: Sean Christopherson <seanjc@google.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>,
	 Shuah Khan <skhan@linuxfoundation.org>,
	Thomas Gleixner <tglx@kernel.org>,
	 Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	 Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org,  "H. Peter Anvin" <hpa@zytor.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Juergen Gross <jgross@suse.com>,
	 Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Paul Durrant <paul@xen.org>,  Jonathan Cameron <jic23@kernel.org>,
	Sascha Bischoff <Sascha.Bischoff@arm.com>,
	 Marc Zyngier <maz@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
	Jack Allister <jalliste@amazon.com>,
	 Dongli Zhang <dongli.zhang@oracle.com>,
	joe.jin@oracle.com, kvm@vger.kernel.org,
	 linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	 xen-devel@lists.xenproject.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v6 00/36] Cleaning up the KVM clock mess
Date: Tue, 4 Aug 2026 14:59:06 -0700	[thread overview]
Message-ID: <anJgqpOJGPjLAqYe@google.com> (raw)
In-Reply-To: <anE4GtMa33nz7qdK@google.com>

On Mon, Aug 03, 2026, Sean Christopherson wrote:
> On Sat, Aug 01, 2026, David Woodhouse wrote:
> > On Fri, 2026-07-31 at 13:09 -0700, Sean Christopherson wrote:
> > > Applied patch 1 to kvm-x86 clocks.
> > >
> > > [01/36] KVM: x86/xen: Do not corrupt KVM clock in kvm_xen_shared_info_init()
> > >         https://github.com/kvm-x86/linux/commit/3d4b20b5a7df
> > 
> > Thanks. Could the clocks branch be based on something that includes the
> > timekeeping work from the timers-ptp-2026-06-13 merge (in v7.2-rc1)?
> 
> Yeah, I can rebase onto a 7.2-rcN.  Y'all are likely the only people that care
> about the above commit, so a late rebase isn't a big deal.
> 
> There's basically zero chance I'll get the entire series applied for 7.3, but
> "Use ktime_get_snapshot_id() for master clock" is at least in striking distance,
> so there's no reason not to allow for the possibility.

New hash:

[1/1] KVM: x86/xen: Do not corrupt KVM clock in kvm_xen_shared_info_init()
      https://github.com/kvm-x86/linux/commit/633d7652f80f


      reply	other threads:[~2026-08-04 21:59 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-03 21:17 [PATCH v6 00/36] Cleaning up the KVM clock mess David Woodhouse
2026-07-03 21:17 ` [PATCH v6 01/36] KVM: x86/xen: Do not corrupt KVM clock in kvm_xen_shared_info_init() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 02/36] KVM: x86: Improve accuracy of KVM clock when TSC scaling is in force David Woodhouse
2026-07-24 21:10   ` Sean Christopherson
2026-07-03 21:17 ` [PATCH v6 03/36] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms David Woodhouse
2026-07-03 21:17 ` [PATCH v6 04/36] KVM: selftests: Use UAPI pvclock-abi.h in xen_shinfo_test David Woodhouse
2026-07-03 21:17 ` [PATCH v6 05/36] KVM: x86: Add KVM_[GS]ET_CLOCK_GUEST for accurate KVM clock migration David Woodhouse
2026-07-24 21:17   ` Sean Christopherson
2026-07-25  7:47     ` David Woodhouse
2026-07-28  1:15       ` Sean Christopherson
2026-07-28  2:13         ` David Woodhouse
2026-07-31 23:16       ` Sean Christopherson
2026-07-03 21:17 ` [PATCH v6 06/36] KVM: selftests: Add KVM/PV clock selftest to prove timer correction David Woodhouse
2026-07-03 21:17 ` [PATCH v6 07/36] KVM: x86: Explicitly disable TSC scaling without CONSTANT_TSC David Woodhouse
2026-07-03 21:17 ` [PATCH v6 08/36] KVM: x86: Activate master clock immediately on vCPU creation David Woodhouse
2026-07-24 21:19   ` Sean Christopherson
2026-07-25  7:59     ` David Woodhouse
2026-07-25 12:45       ` David Woodhouse
2026-07-03 21:17 ` [PATCH v6 09/36] KVM: x86: Add KVM_VCPU_TSC_SCALE and fix the documentation on TSC migration David Woodhouse
2026-07-03 21:17 ` [PATCH v6 10/36] KVM: x86: Avoid NTP frequency skew for KVM clock on 32-bit host David Woodhouse
2026-07-03 21:17 ` [PATCH v6 11/36] KVM: x86: Fold __get_kvmclock() into get_kvmclock() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 12/36] KVM: x86: Restructure get_kvmclock() David Woodhouse
2026-07-24 21:29   ` Sean Christopherson
2026-07-25  7:53     ` David Woodhouse
2026-07-28  0:49       ` Sean Christopherson
2026-07-03 21:17 ` [PATCH v6 13/36] KVM: x86: Fix KVM clock precision in get_kvmclock() with TSC scaling David Woodhouse
2026-07-03 21:17 ` [PATCH v6 14/36] KVM: x86: Use get_kvmclock() in kvm_get_wall_clock_epoch() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 15/36] KVM: x86: Fix compute_guest_tsc() to handle negative time deltas David Woodhouse
2026-07-24 21:27   ` Sean Christopherson
2026-07-25  7:56     ` David Woodhouse
2026-07-28  0:51       ` Sean Christopherson
2026-07-25 17:11     ` David Woodhouse
2026-07-03 21:17 ` [PATCH v6 16/36] KVM: x86: Restructure kvm_guest_time_update() for TSC upscaling David Woodhouse
2026-07-03 21:17 ` [PATCH v6 17/36] KVM: x86: Simplify and comment kvm_get_time_scale() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 18/36] KVM: x86: Remove implicit rdtsc() from kvm_compute_l1_tsc_offset() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 19/36] KVM: x86: Improve synchronization in kvm_synchronize_tsc() David Woodhouse
2026-07-03 21:17 ` [PATCH v6 20/36] KVM: x86: Kill last_tsc_{nsec,write,offset} fields David Woodhouse
2026-07-03 21:18 ` [PATCH v6 21/36] KVM: x86: Replace nr_vcpus_matched_tsc count with all_vcpus_matched_tsc bool David Woodhouse
2026-07-03 21:18 ` [PATCH v6 22/36] KVM: x86: Allow KVM master clock mode when TSCs are offset from each other David Woodhouse
2026-07-03 21:18 ` [PATCH v6 23/36] KVM: selftests: Add master clock offset test David Woodhouse
2026-07-03 21:18 ` [PATCH v6 24/36] KVM: x86: Factor out kvm_use_master_clock() David Woodhouse
2026-07-03 21:18 ` [PATCH v6 25/36] KVM: x86: Avoid gratuitous global clock updates David Woodhouse
2026-07-03 21:18 ` [PATCH v6 26/36] KVM: x86/xen: Prevent runstate times from becoming negative David Woodhouse
2026-07-03 21:18 ` [PATCH v6 27/36] KVM: x86: Avoid redundant masterclock updates from multiple vCPUs David Woodhouse
2026-07-03 21:18 ` [PATCH v6 28/36] KVM: x86: Remove runtime Xen TSC frequency CPUID update David Woodhouse
2026-07-03 21:18 ` [PATCH v6 29/36] KVM: selftests: Add Xen/generic CPUID timing leaf test David Woodhouse
2026-07-03 21:18 ` [PATCH v6 30/36] KVM: x86: Re-synchronize TSC after KVM_SET_TSC_KHZ David Woodhouse
2026-07-03 21:18 ` [PATCH v6 31/36] KVM: selftests: Add Xen runstate migration test David Woodhouse
2026-07-26  9:21   ` David Woodhouse
2026-07-03 21:18 ` [PATCH v6 32/36] KVM: x86: Use ktime_get_snapshot_id() for master clock David Woodhouse
2026-07-03 21:18 ` [PATCH v6 33/36] KVM: x86: Compute kvmclock base without pvclock_gtod_data David Woodhouse
2026-07-03 21:18 ` [PATCH v6 34/36] KVM: x86: Cache host vclock_mode for masterclock eligibility checks David Woodhouse
2026-07-03 21:18 ` [PATCH v6 35/36] KVM: x86: Remove pvclock_gtod_data and private timekeeping code David Woodhouse
2026-07-03 21:18 ` [PATCH v6 36/36] KVM: x86: Activate master clock from kvm_arch_init_vm() David Woodhouse
2026-07-31 20:09 ` [PATCH v6 00/36] Cleaning up the KVM clock mess Sean Christopherson
2026-08-01  8:38   ` David Woodhouse
2026-08-04  0:53     ` Sean Christopherson
2026-08-04 21:59       ` Sean Christopherson [this message]

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