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[133.11.54.73]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7b763945cf0sm3659664a12.48.2024.08.03.23.55.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 03 Aug 2024 23:55:07 -0700 (PDT) Message-ID: <32107cc5-293c-44a8-bf1e-c86f2ec6b0d7@daynix.com> Date: Sun, 4 Aug 2024 15:55:03 +0900 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH for-9.2 v11 06/11] pcie_sriov: Reuse SR-IOV VF device instances To: "Michael S. Tsirkin" Cc: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , Marcel Apfelbaum , Alex Williamson , =?UTF-8?Q?C=C3=A9dric_Le_Goater?= , Paolo Bonzini , =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Sriram Yagnaraman , Jason Wang , Keith Busch , Klaus Jensen , Markus Armbruster , qemu-devel@nongnu.org, qemu-block@nongnu.org References: <20240802-reuse-v11-0-fb83bb8c19fb@daynix.com> <20240802-reuse-v11-6-fb83bb8c19fb@daynix.com> <20240802125342-mutt-send-email-mst@kernel.org> Content-Language: en-US From: Akihiko Odaki In-Reply-To: <20240802125342-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: none client-ip=2607:f8b0:4864:20::434; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x434.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2024/08/03 1:54, Michael S. Tsirkin wrote: > On Fri, Aug 02, 2024 at 02:17:56PM +0900, Akihiko Odaki wrote: >> Disable SR-IOV VF devices by reusing code to power down PCI devices >> instead of removing them when the guest requests to disable VFs. This >> allows to realize devices and report VF realization errors at PF >> realization time. > > What kind of errors do you have in mind? The type of errors common for any SR-IOV device would be the conflict of PCI function numbers; all function numbers that will be used by VFs should be reserved when realizing the PF. With the SR-IOV support of virtio-net-pci I'm adding, a user may specify invalid netdev for VFs. Regards, Akihiko Odaki