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([2a02:c7c:74db:8d00:ad29:f02c:48a2:269c]) by smtp.gmail.com with ESMTPSA id iv18-20020a05600c549200b003f17b91c3adsm39218710wmb.28.2023.05.02.03.58.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 May 2023 03:58:47 -0700 (PDT) Message-ID: <2c70f6a6-9e13-3412-8e65-43675fda4d95@linaro.org> Date: Tue, 2 May 2023 11:58:46 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: [PATCH v7 1/1] arm/kvm: add support for MTE Content-Language: en-US To: Cornelia Huck , quintela@redhat.com Cc: Peter Maydell , Paolo Bonzini , qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Eric Auger , Gavin Shan , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , Andrea Bolognani References: <20230428095533.21747-1-cohuck@redhat.com> <20230428095533.21747-2-cohuck@redhat.com> <87sfcj99rn.fsf@secure.mitica> <64915da6-4276-1603-1454-9350a44561d8@linaro.org> <871qjzcdgi.fsf@redhat.com> From: Richard Henderson In-Reply-To: <871qjzcdgi.fsf@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::32d; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x32d.google.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-1.422, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 5/2/23 10:03, Cornelia Huck wrote: > Has anyone been able to access a real system with MTE? (All the systems > where I had hoped that MTE would be available didn't have MTE in the end > so far, so I'd be interested to hear if anybody else already got to play > with one.) Honestly, I don't want to even try to test migration if I only > have access to MTE on the FVP... Well there's always MTE on QEMU with TCG. :-) But I agree that while it's better than FVP, it's still slow, and difficult to test anything at scale. I have no objection to getting non-migratable MTE on KVM in before attempting to solve migration. r~