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[188.85.150.151]) by smtp.gmail.com with ESMTPSA id m7-20020a05600c280700b00405391f485fsm946177wmb.41.2023.10.04.01.53.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 01:53:52 -0700 (PDT) From: Juan Quintela To: Daniil Tatianin Cc: Peter Xu , Leonardo Bras , qemu-devel@nongnu.org, qemu-s390x@nongnu.org Subject: Re: [PATCH v2 3/3] s390x/a-b-bios: zero the first byte of each page on start In-Reply-To: <20230919102346.2117963-4-d-tatianin@yandex-team.ru> (Daniil Tatianin's message of "Tue, 19 Sep 2023 13:23:46 +0300") References: <20230919102346.2117963-1-d-tatianin@yandex-team.ru> <20230919102346.2117963-4-d-tatianin@yandex-team.ru> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) Date: Wed, 04 Oct 2023 10:53:51 +0200 Message-ID: <87jzs24vkw.fsf@secure.mitica> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Reply-To: quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Daniil Tatianin wrote: > Same as with the x86 verison of this test, we relied on the contents of > all pages in RAM to be the same across the entire test range, which is > very fragile. Zero the first byte of each page before running the > increment loop to fix this. > > Fixes: 5571dc824b ("tests/migration: Enable the migration test on s390x, too") > Signed-off-by: Daniil Tatianin Reviewed-by: Juan Quintela queued.