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From:   Oliver Upton <oliver.upton@linux.dev>
To:     linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
        kvmarm@lists.linux.dev, Marc Zyngier <maz@kernel.org>
Cc:     Oliver Upton <oliver.upton@linux.dev>,
        Mostafa Saleh <smostafa@google.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        stable@vger.kernel.org, James Morse <james.morse@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Zenghui Yu <yuzenghui@huawei.com>,
        Will Deacon <will@kernel.org>,
        Quentin Perret <qperret@google.com>
Subject: Re: [PATCH v2] KVM: arm64: Make vcpu flag updates non-preemptible
Date:   Wed, 19 Apr 2023 08:41:26 +0000
Message-ID: <168189366436.3163688.14802526283160116596.b4-ty@linux.dev>
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On Tue, 18 Apr 2023 13:57:37 +0100, Marc Zyngier wrote:
> Per-vcpu flags are updated using a non-atomic RMW operation.
> Which means it is possible to get preempted between the read and
> write operations.
> 
> Another interesting thing to note is that preemption also updates
> flags, as we have some flag manipulation in both the load and put
> operations.
> 
> [...]

Applied to kvmarm/fixes, thanks!

[1/1] KVM: arm64: Make vcpu flag updates non-preemptible
      https://git.kernel.org/kvmarm/kvmarm/c/35dcb3ac663a

--
Best,
Oliver