From:   Oliver Upton <oliver.upton@linux.dev>
To:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        kvmarm@lists.cs.columbia.edu, kvmarm@lists.linux.dev,
        Dong Bo <dongbo4@huawei.com>
Cc:     Oliver Upton <oliver.upton@linux.dev>,
        James Morse <james.morse@arm.com>,
        Alexandru Elisei <alexandru.elisei@arm.com>,
        Will Deacon <will@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Nianyao Tang <tangnianyao@huawei.com>,
        Marc Zyngier <maz@kernel.org>,
        Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: Re: [PATCH] KVM: arm64: Synchronize SMEN on vcpu schedule out
Date:   Mon, 23 Jan 2023 20:26:16 +0000
Message-Id: <167450416037.2570834.653110952434883435.b4-ty@linux.dev>
In-Reply-To: <20221220105024.13484-1-dongbo4@huawei.com>
References: <20221220105024.13484-1-dongbo4@huawei.com>
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On Tue, 20 Dec 2022 18:50:24 +0800, Dong Bo wrote:
> From: Nianyao Tang <tangnianyao@huawei.com>
> 
> If we have VHE and need to reenable SME for host in
> kvm_arch_vcpu_put_fp, CPACR.SMEN is modified from 0 to 1. Trap
> control for reading SVCR is modified from enable to disable.
> Synchronization is needed before reading SVCR later in
> fpsimd_save, or it may cause sync exception which can not be
> handled by host.
> 
> [...]

Applied to kvmarm/next, thanks!

[1/1] KVM: arm64: Synchronize SMEN on vcpu schedule out
      https://git.kernel.org/kvmarm/kvmarm/c/59d78a2ec0e9

--
Best,
Oliver