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Tue, 03 Feb 2026 09:02:07 -0800 (PST) X-Received: by 2002:a05:620a:6cc3:b0:8b2:e70c:427a with SMTP id af79cd13be357-8ca2f9b1220mr27542585a.44.1770138126481; Tue, 03 Feb 2026 09:02:06 -0800 (PST) Received: from x1.local ([142.188.210.156]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8ca2fd2cbe5sm7792685a.28.2026.02.03.09.02.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Feb 2026 09:02:06 -0800 (PST) Date: Tue, 3 Feb 2026 12:02:04 -0500 From: Peter Xu To: =?utf-8?Q?C=C3=A9dric?= Le Goater Cc: Avihai Horon , qemu-devel@nongnu.org, Alex Williamson , Eric Blake , Markus Armbruster , Fabiano Rosas , Maor Gottlieb Subject: Re: [PATCH v3] vfio/migration: Send VFIO_MIGRATION event before PRE_COPY_P2P transition Message-ID: References: <20260202173406.13979-1-avihaih@nvidia.com> <24ea8ccb-d904-49e4-bd27-5378aac4a56a@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <24ea8ccb-d904-49e4-bd27-5378aac4a56a@redhat.com> Received-SPF: pass client-ip=170.10.133.124; envelope-from=peterx@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_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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: qemu development 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 Tue, Feb 03, 2026 at 05:48:11PM +0100, Cédric Le Goater wrote: > Peter, Fabiano, > > Do you think it would be interesting to send VFIO migration events > by default ? No objection here. IIUC it's a matter of why it got introduced with default off in the middle of 2024? If it's about compatibility of any old mgmt which may be surprised by these events, then we want to know if they're ready, and then if we need a compat field for it in older machine types (or enable it even with old machines). Thanks, -- Peter Xu