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Wed, 14 Jan 2026 18:34:47 -0800 (PST) Received: from [10.72.112.168] ([209.132.188.88]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-81f8e6a71c6sm821559b3a.63.2026.01.14.18.34.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Jan 2026 18:34:46 -0800 (PST) Message-ID: Date: Thu, 15 Jan 2026 10:34:32 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 05/47] KVM: arm64: Make MPAMSM_EL1 accesses UNDEF To: Ben Horgan Cc: amitsinght@marvell.com, baisheng.gao@unisoc.com, baolin.wang@linux.alibaba.com, carl@os.amperecomputing.com, dave.martin@arm.com, david@kernel.org, dfustini@baylibre.com, fenghuay@nvidia.com, james.morse@arm.com, jonathan.cameron@huawei.com, kobak@nvidia.com, lcherian@marvell.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, peternewman@google.com, punit.agrawal@oss.qualcomm.com, quic_jiles@quicinc.com, reinette.chatre@intel.com, rohit.mathew@arm.com, scott@os.amperecomputing.com, sdonthineni@nvidia.com, tan.shaopeng@fujitsu.com, xhao@linux.alibaba.com, catalin.marinas@arm.com, will@kernel.org, corbet@lwn.net, maz@kernel.org, oupton@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, kvmarm@lists.linux.dev References: <20260112165914.4086692-1-ben.horgan@arm.com> <20260112165914.4086692-6-ben.horgan@arm.com> Content-Language: en-US From: Gavin Shan In-Reply-To: <20260112165914.4086692-6-ben.horgan@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/13/26 12:58 AM, Ben Horgan wrote: > The MPAMSM_EL1 controls the MPAM labeling for an SMCU, Streaming Mode > Compute Unit. As there is on MPAM support in kvm, make sure MPAMSM_EL1 > accesses trigger an UNDEF. > > Reviewed-by: Jonathan Cameron > Signed-off-by: Ben Horgan > --- > Changes since v2: > Remove paragraph from commit on allowed range of values > --- > arch/arm64/kvm/sys_regs.c | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Gavin Shan