From: Sean Christopherson <seanjc@google.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
dri-devel@lists.freedesktop.org,
Kevin Loughlin <kevinloughlin@google.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Kai Huang <kai.huang@intel.com>, Ingo Molnar <mingo@kernel.org>,
Zheyun Shen <szy0127@sjtu.edu.cn>,
Mingwei Zhang <mizhang@google.com>,
Francesco Lavra <francescolavra.fl@gmail.com>
Subject: Re: [PATCH v3 0/8] x86, KVM: Optimize SEV cache flushing
Date: Wed, 9 Jul 2025 14:36:50 -0700 [thread overview]
Message-ID: <aG7g8vNejmxfftA-@google.com> (raw)
In-Reply-To: <20250709185757.GDaG67tbGFYHUQxte2@fat_crate.local>
On Wed, Jul 09, 2025, Borislav Petkov wrote:
> On Wed, Jul 09, 2025 at 09:25:35AM -0700, Sean Christopherson wrote:
> > On Thu, May 22, 2025, Sean Christopherson wrote:
> > > This is the combination of Kevin's WBNOINVD series[1] with Zheyun's targeted
> > > flushing series[2]. The combined goal is to use WBNOINVD instead of WBINVD
> > > when doing cached maintenance to prevent data corruption due to C-bit aliasing,
> > > and to reduce the number of cache invalidations by only performing flushes on
> > > CPUs that have entered the relevant VM since the last cache flush.
> > >
> > > All of the non-KVM patches are frontloaded and based on v6.15-rc7, so that
> > > they can go through the tip tree (in a stable branch, please :-) ).
> >
> > Tip tree folks, any feedback/thoughts on this series (patches 1-4 in particular)?
> > It'd be nice to get this into 6.17, and I'd really like land it by 6.18 at the
> > latest.
>
> I'll take a look tomorrow.
>
> If I queue 1-4, would you like an immutable branch to merge for the other 4?
Yes please, thanks!
next prev parent reply other threads:[~2025-07-09 21:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-22 23:37 Sean Christopherson
2025-05-22 23:37 ` [PATCH v3 1/8] drm/gpu: Remove dead checks on wbinvd_on_all_cpus()'s return value Sean Christopherson
2025-07-10 14:47 ` [tip: x86/core] " tip-bot2 for Sean Christopherson
2025-07-11 8:52 ` [PATCH v3 1/8] " Simona Vetter
2025-05-22 23:37 ` [PATCH v3 2/8] x86, lib: Drop the unused return value from wbinvd_on_all_cpus() Sean Christopherson
2025-07-10 14:47 ` [tip: x86/core] x86/lib: " tip-bot2 for Sean Christopherson
2025-05-22 23:37 ` [PATCH v3 3/8] x86, lib: Add WBNOINVD helper functions Sean Christopherson
2025-07-10 11:29 ` Borislav Petkov
2025-07-10 13:56 ` Sean Christopherson
2025-07-10 14:38 ` Borislav Petkov
2025-07-10 14:37 ` Peter Zijlstra
2025-07-10 15:47 ` Peter Zijlstra
2025-07-10 15:55 ` Sean Christopherson
2025-07-10 15:58 ` Peter Zijlstra
2025-07-11 8:51 ` Simona Vetter
2025-07-11 8:52 ` Peter Zijlstra
2025-07-10 14:47 ` [tip: x86/core] x86/lib: " tip-bot2 for Kevin Loughlin
2025-05-22 23:37 ` [PATCH v3 4/8] x86, lib: Add wbinvd and wbnoinvd helpers to target multiple CPUs Sean Christopherson
2025-07-10 14:47 ` [tip: x86/core] x86/lib: Add WBINVD and WBNOINVD " tip-bot2 for Zheyun Shen
2025-05-22 23:37 ` [PATCH v3 5/8] KVM: x86: Use wbinvd_on_cpu() instead of an open-coded equivalent Sean Christopherson
2025-05-22 23:37 ` [PATCH v3 6/8] KVM: SVM: Remove wbinvd in sev_vm_destroy() Sean Christopherson
2025-05-22 23:37 ` [PATCH v3 7/8] KVM: SEV: Prefer WBNOINVD over WBINVD for cache maintenance efficiency Sean Christopherson
2025-05-22 23:37 ` [PATCH v3 8/8] KVM: SVM: Flush cache only on CPUs running SEV guest Sean Christopherson
2025-07-09 16:25 ` [PATCH v3 0/8] x86, KVM: Optimize SEV cache flushing Sean Christopherson
2025-07-09 18:57 ` Borislav Petkov
2025-07-09 21:36 ` Sean Christopherson [this message]
2025-07-10 23:08 ` Sean Christopherson
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