linux-kernel - Re: [PATCH v7 0/7] KVM: arm64: Normalize cache configuration

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Date:   Mon, 23 Jan 2023 20:24:56 +0000
From:   Oliver Upton <oliver.upton@...ux.dev>
To:     Akihiko Odaki <akihiko.odaki@...nix.com>
Cc:     Oliver Upton <oliver.upton@...ux.dev>,
        Marc Zyngier <maz@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Hector Martin <marcan@...can.st>,
        Will Deacon <will@...nel.org>,
        James Morse <james.morse@....com>,
        Sven Peter <sven@...npeter.dev>, linux-kernel@...r.kernel.org,
        kvmarm@...ts.linux.dev, kvmarm@...ts.cs.columbia.edu,
        Catalin Marinas <catalin.marinas@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        asahi@...ts.linux.dev, Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Alexandru Elisei <alexandru.elisei@....com>
Subject: Re: [PATCH v7 0/7] KVM: arm64: Normalize cache configuration

On Thu, 12 Jan 2023 11:38:45 +0900, Akihiko Odaki wrote:
> Before this change, the cache configuration of the physical CPU was
> exposed to vcpus. This is problematic because the cache configuration a
> vcpu sees varies when it migrates between vcpus with different cache
> configurations.
> 
> Fabricate cache configuration from the sanitized value, which holds the
> CTR_EL0 value the userspace sees regardless of which physical CPU it
> resides on.
> 
> [...]

Applied to kvmarm/next, thanks!

[1/7] arm64: Allow the definition of UNKNOWN system register fields
      https://git.kernel.org/kvmarm/kvmarm/c/e2c0b51f1c9d
[2/7] arm64/sysreg: Convert CCSIDR_EL1 to automatic generation
      https://git.kernel.org/kvmarm/kvmarm/c/d1a0eb124c44
[3/7] arm64/sysreg: Add CCSIDR2_EL1
      https://git.kernel.org/kvmarm/kvmarm/c/8f407d6a15f3
[4/7] arm64/cache: Move CLIDR macro definitions
      https://git.kernel.org/kvmarm/kvmarm/c/805e6ec1c5e0
[5/7] KVM: arm64: Always set HCR_TID2
      https://git.kernel.org/kvmarm/kvmarm/c/8cc6dedaff42
[6/7] KVM: arm64: Mask FEAT_CCIDX
      https://git.kernel.org/kvmarm/kvmarm/c/bf48040cd9b0
[7/7] KVM: arm64: Normalize cache configuration
      https://git.kernel.org/kvmarm/kvmarm/c/7af0c2534f4c

--
Best,
Oliver