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From: Sean Christopherson <seanjc@google.com>
To: sashiko-reviews@lists.linux.dev
Cc: David Woodhouse <dwmw2@infradead.org>, kvm@vger.kernel.org
Subject: Re: [PATCH v7 24/36] KVM: x86: Use ktime_get_snapshot_id() for master clock
Date: Tue, 28 Jul 2026 15:59:40 -0700	[thread overview]
Message-ID: <amk0XODzenVy3D1g@google.com> (raw)
In-Reply-To: <20260728152156.A48831F000E9@smtp.kernel.org>

On Tue, Jul 28, 2026, sashiko-bot@kernel.org wrote:
> Thank you for your contribution! Sashiko AI review found 6 potential issue(s) to consider:
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 57494812cc839..45a768fd7cb35 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> 
> [ ... ]
> 
> > @@ -1580,14 +1581,39 @@ static int do_realtime(struct timespec64 *ts, u64 *tsc_timestamp)
> 
> [Severity: Low]
> The commit message mentions replacing do_kvmclock_base, do_monotonic, 
> do_realtime, and vgettsc. Were these functions meant to be removed in this 
> patch? Leaving them defined as static helper functions without any callers 
> will break builds compiled with -Werror=unused-function.

Sashiko's "low" is my "high" :-)

arch/x86/kvm/x86.c:1575:12: error: ‘do_realtime’ defined but not used [-Werror=unused-function]
 1575 | static int do_realtime(struct timespec64 *ts, u64 *tsc_timestamp)
      |            ^~~~~~~~~~~
arch/x86/kvm/x86.c:1556:12: error: ‘do_monotonic’ defined but not used [-Werror=unused-function]
 1556 | static int do_monotonic(s64 *t, u64 *tsc_timestamp)
      |            ^~~~~~~~~~~~
arch/x86/kvm/x86.c:1533:12: error: ‘do_kvmclock_base’ defined but not used [-Werror=unused-function]
 1533 | static int do_kvmclock_base(s64 *t, u64 *tsc_timestamp)
      |            ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

  reply	other threads:[~2026-07-28 22:59 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-28 14:39 [PATCH v7 00/36] Cleaning up the KVM clock mess David Woodhouse
2026-07-28 14:39 ` [PATCH v7 01/36] KVM: x86: Improve accuracy of KVM clock when TSC scaling is in force David Woodhouse
2026-07-28 14:39 ` [PATCH v7 02/36] KVM: x86: Explicitly disable TSC scaling without CONSTANT_TSC David Woodhouse
2026-07-28 14:39 ` [PATCH v7 03/36] KVM: x86: Activate master clock immediately on vCPU creation David Woodhouse
2026-07-28 15:17   ` sashiko-bot
2026-07-28 14:39 ` [PATCH v7 04/36] KVM: x86: Avoid NTP frequency skew for KVM clock on 32-bit host David Woodhouse
2026-07-28 14:39 ` [PATCH v7 05/36] KVM: x86: Fold __get_kvmclock() into get_kvmclock() David Woodhouse
2026-07-28 23:06   ` Sean Christopherson
2026-07-28 14:39 ` [PATCH v7 06/36] KVM: x86: Drop CPU pinning in get_kvmclock() David Woodhouse
2026-07-28 14:39 ` [PATCH v7 07/36] KVM: x86: Restructure get_kvmclock() David Woodhouse
2026-07-28 15:11   ` sashiko-bot
2026-07-28 23:02     ` Sean Christopherson
2026-07-28 23:04   ` Sean Christopherson
2026-07-28 14:39 ` [PATCH v7 08/36] KVM: x86: Fix KVM clock precision in get_kvmclock() with TSC scaling David Woodhouse
2026-07-28 14:39 ` [PATCH v7 09/36] KVM: x86: Use get_kvmclock() in kvm_get_wall_clock_epoch() David Woodhouse
2026-07-28 14:39 ` [PATCH v7 10/36] KVM: x86: Fix compute_guest_tsc() to handle negative time deltas David Woodhouse
2026-07-28 14:39 ` [PATCH v7 11/36] KVM: x86: Restructure kvm_guest_time_update() for TSC upscaling David Woodhouse
2026-07-28 15:11   ` sashiko-bot
2026-07-28 14:39 ` [PATCH v7 12/36] KVM: x86: Simplify and comment kvm_get_time_scale() David Woodhouse
2026-07-28 14:39 ` [PATCH v7 13/36] KVM: x86: Remove implicit rdtsc() from kvm_compute_l1_tsc_offset() David Woodhouse
2026-07-28 14:39 ` [PATCH v7 14/36] KVM: x86: Improve synchronization in kvm_synchronize_tsc() David Woodhouse
2026-07-28 15:08   ` sashiko-bot
2026-07-28 14:39 ` [PATCH v7 15/36] KVM: x86: Kill last_tsc_{nsec,write,offset} fields David Woodhouse
2026-07-28 15:09   ` sashiko-bot
2026-07-28 14:39 ` [PATCH v7 16/36] KVM: x86: Replace nr_vcpus_matched_tsc count with all_vcpus_matched_tsc bool David Woodhouse
2026-07-28 14:39 ` [PATCH v7 17/36] KVM: x86: Allow KVM master clock mode when TSCs are offset from each other David Woodhouse
2026-07-28 14:39 ` [PATCH v7 18/36] KVM: x86: Factor out kvm_use_master_clock() David Woodhouse
2026-07-28 14:39 ` [PATCH v7 19/36] KVM: x86: Avoid gratuitous global clock updates David Woodhouse
2026-07-28 14:40 ` [PATCH v7 20/36] KVM: x86/xen: Prevent runstate times from becoming negative David Woodhouse
2026-07-28 15:15   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 21/36] KVM: x86: Avoid redundant masterclock updates from multiple vCPUs David Woodhouse
2026-07-28 15:23   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 22/36] KVM: x86: Remove runtime Xen TSC frequency CPUID update David Woodhouse
2026-07-28 15:18   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 23/36] KVM: x86: Re-synchronize TSC after KVM_SET_TSC_KHZ David Woodhouse
2026-07-28 15:19   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 24/36] KVM: x86: Use ktime_get_snapshot_id() for master clock David Woodhouse
2026-07-28 15:21   ` sashiko-bot
2026-07-28 22:59     ` Sean Christopherson [this message]
2026-07-28 14:40 ` [PATCH v7 25/36] KVM: x86: Compute kvmclock base without pvclock_gtod_data David Woodhouse
2026-07-28 14:40 ` [PATCH v7 26/36] KVM: x86: Cache host vclock_mode for masterclock eligibility checks David Woodhouse
2026-07-28 15:26   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 27/36] KVM: x86: Remove pvclock_gtod_data and private timekeeping code David Woodhouse
2026-07-28 15:25   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 28/36] KVM: x86: Activate master clock from kvm_arch_init_vm() David Woodhouse
2026-07-28 15:31   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 29/36] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms David Woodhouse
2026-07-28 14:40 ` [PATCH v7 30/36] KVM: selftests: Use UAPI pvclock-abi.h in xen_shinfo_test David Woodhouse
2026-07-28 14:40 ` [PATCH v7 31/36] KVM: x86: Add KVM_[GS]ET_CLOCK_GUEST for accurate KVM clock migration David Woodhouse
2026-07-28 14:40 ` [PATCH v7 32/36] KVM: x86: Add KVM_VCPU_TSC_SCALE and fix the documentation on TSC migration David Woodhouse
2026-07-28 15:26   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 33/36] KVM: selftests: Add KVM/PV clock selftest to prove timer correction David Woodhouse
2026-07-28 14:40 ` [PATCH v7 34/36] KVM: selftests: Add master clock offset test David Woodhouse
2026-07-28 15:22   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 35/36] KVM: selftests: Add Xen/generic CPUID timing leaf test David Woodhouse
2026-07-28 15:23   ` sashiko-bot
2026-07-28 14:40 ` [PATCH v7 36/36] KVM: selftests: Add Xen runstate migration test David Woodhouse
2026-07-28 23:18 ` [PATCH v7 00/36] Cleaning up the KVM clock mess Sean Christopherson

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