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([2a01:e0a:165:d60:bbdd:3c5e:7d8b:3f72]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-442f39ef8bbsm112495485e9.37.2025.05.16.08.27.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 16 May 2025 08:27:13 -0700 (PDT) Message-ID: <6f9f081e-f251-49b5-a7d2-484cd8e03b48@redhat.com> Date: Fri, 16 May 2025 17:27:12 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 05/27] vfio: refactor out IRQ signalling setup To: John Levon , qemu-devel@nongnu.org Cc: =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , Thanos Makatos , =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= , Paolo Bonzini , Peter Xu , David Hildenbrand , Stefano Garzarella , "Michael S. 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -37 X-Spam_score: -3.8 X-Spam_bar: --- X-Spam_report: (-3.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.686, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 5/15/25 17:43, John Levon wrote: > This makes for a slightly more readable vfio_msix_vector_do_use() > implementation, and we will rely on this shortly. > > Signed-off-by: John Levon Reviewed-by: Cédric Le Goater Thanks, C. > --- > hw/vfio/pci.c | 35 ++++++++++++++++++++--------------- > 1 file changed, 20 insertions(+), 15 deletions(-) > > diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c > index 7912c17dd2..9dd0bd4068 100644 > --- a/hw/vfio/pci.c > +++ b/hw/vfio/pci.c > @@ -511,6 +511,25 @@ static void vfio_update_kvm_msi_virq(VFIOMSIVector *vector, MSIMessage msg, > kvm_irqchip_commit_routes(kvm_state); > } > > +static void set_irq_signalling(VFIODevice *vbasedev, VFIOMSIVector *vector, > + unsigned int nr) > +{ > + Error *err = NULL; > + int32_t fd; > + > + if (vector->virq >= 0) { > + fd = event_notifier_get_fd(&vector->kvm_interrupt); > + } else { > + fd = event_notifier_get_fd(&vector->interrupt); > + } > + > + if (!vfio_device_irq_set_signaling(vbasedev, VFIO_PCI_MSIX_IRQ_INDEX, nr, > + VFIO_IRQ_SET_ACTION_TRIGGER, > + fd, &err)) { > + error_reportf_err(err, VFIO_MSG_PREFIX, vbasedev->name); > + } > +} > + > static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr, > MSIMessage *msg, IOHandler *handler) > { > @@ -583,21 +602,7 @@ static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr, > strerror(-ret)); > } > } else { > - Error *err = NULL; > - int32_t fd; > - > - if (vector->virq >= 0) { > - fd = event_notifier_get_fd(&vector->kvm_interrupt); > - } else { > - fd = event_notifier_get_fd(&vector->interrupt); > - } > - > - if (!vfio_device_irq_set_signaling(&vdev->vbasedev, > - VFIO_PCI_MSIX_IRQ_INDEX, nr, > - VFIO_IRQ_SET_ACTION_TRIGGER, fd, > - &err)) { > - error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name); > - } > + set_irq_signalling(&vdev->vbasedev, vector, nr); > } > } >