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([2602:ae:1598:4c01:ec81:440e:33a4:40b9]) by smtp.gmail.com with ESMTPSA id c20-20020a62e814000000b0063b8ddf77f7sm13581301pfi.211.2023.05.16.13.31.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 May 2023 13:31:31 -0700 (PDT) Message-ID: Date: Tue, 16 May 2023 13:31:29 -0700 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 , Peter Maydell , Paolo Bonzini Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Eric Auger , Juan Quintela , 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> From: Richard Henderson In-Reply-To: <20230428095533.21747-2-cohuck@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::534; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x534.google.com X-Spam_score_int: -47 X-Spam_score: -4.8 X-Spam_bar: ---- X-Spam_report: (-4.8 / 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=-2.666, 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 4/28/23 02:55, Cornelia Huck wrote: > Extend the 'mte' property for the virt machine to cover KVM as > well. For KVM, we don't allocate tag memory, but instead enable the > capability. > > If MTE has been enabled, we need to disable migration, as we do not > yet have a way to migrate the tags as well. Therefore, MTE will stay > off with KVM unless requested explicitly. > > Signed-off-by: Cornelia Huck > --- > hw/arm/virt.c | 69 +++++++++++++++++++++++++------------------- > target/arm/cpu.c | 9 +++--- > target/arm/cpu.h | 4 +++ > target/arm/kvm.c | 35 ++++++++++++++++++++++ > target/arm/kvm64.c | 5 ++++ > target/arm/kvm_arm.h | 19 ++++++++++++ > 6 files changed, 107 insertions(+), 34 deletions(-) Reviewed-by: Richard Henderson r~