From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Yan Zhao <yan.y.zhao@intel.com>
Subject: Re: [PATCH] KVM: selftests: Ensure all vCPUs hit -EFAULT during initial RO stage
Date: Tue, 4 Mar 2025 17:05:08 -0800 [thread overview]
Message-ID: <174101637372.3904037.6271235554709270288.b4-ty@google.com> (raw)
In-Reply-To: <20250228230804.3845860-1-seanjc@google.com>
On Fri, 28 Feb 2025 15:08:04 -0800, Sean Christopherson wrote:
> During the initial mprotect(RO) stage of mmu_stress_test, keep vCPUs
> spinning until all vCPUs have hit -EFAULT, i.e. until all vCPUs have tried
> to write to a read-only page. If a vCPU manages to complete an entire
> iteration of the loop without hitting a read-only page, *and* the vCPU
> observes mprotect_ro_done before starting a second iteration, then the
> vCPU will prematurely fall through to GUEST_SYNC(3) (on x86 and arm64) and
> get out of sequence.
>
> [...]
Applied to kvm-x86 fixes, with Fixes and Closes. Thanks!
[1/1] KVM: selftests: Ensure all vCPUs hit -EFAULT during initial RO stage
https://github.com/kvm-x86/linux/commit/d88ed5fb7c88
--
https://github.com/kvm-x86/linux/tree/next
prev parent reply other threads:[~2025-03-05 1:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-28 23:08 Sean Christopherson
2025-03-03 3:14 ` Yan Zhao
2025-03-05 1:05 ` Sean Christopherson [this message]
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