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envelope-from=elena.ufimtseva@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_BL=0.01, RCVD_IN_MSPIKE_L3=0.9, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: elena.ufimtseva@oracle.com, john.g.johnson@oracle.com, jag.raman@oracle.com, swapnil.ingle@nutanix.com, john.levon@nutanix.com, alex.williamson@redhat.com, stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: John G Johnson Signed-off-by: Elena Ufimtseva Signed-off-by: John G Johnson Signed-off-by: Jagannathan Raman --- hw/vfio/pci.c | 38 ++++++++++++++++++++++++++++++-------- 1 file changed, 30 insertions(+), 8 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index a6c28dac03..bed8eaa4c2 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -816,8 +816,14 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) memset(vdev->rom, 0xff, size); while (size) { - bytes = pread(vdev->vbasedev.fd, vdev->rom + off, - size, vdev->rom_offset + off); + if (vdev->vbasedev.proxy != NULL) { + bytes = vfio_user_region_read(&vdev->vbasedev, + VFIO_PCI_ROM_REGION_INDEX, + off, size, vdev->rom + off); + } else { + bytes = pread(vdev->vbasedev.fd, vdev->rom + off, + size, vdev->rom_offset + off); + } if (bytes == 0) { break; } else if (bytes > 0) { @@ -936,12 +942,28 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev) * Use the same size ROM BAR as the physical device. The contents * will get filled in later when the guest tries to read it. */ - if (pread(fd, &orig, 4, offset) != 4 || - pwrite(fd, &size, 4, offset) != 4 || - pread(fd, &size, 4, offset) != 4 || - pwrite(fd, &orig, 4, offset) != 4) { - error_report("%s(%s) failed: %m", __func__, vdev->vbasedev.name); - return; + if (vdev->vbasedev.proxy != NULL) { + if (vfio_user_region_read(&vdev->vbasedev, VFIO_PCI_CONFIG_REGION_INDEX, + PCI_ROM_ADDRESS, 4, &orig) != 4 || + vfio_user_region_write(&vdev->vbasedev, + VFIO_PCI_CONFIG_REGION_INDEX, + PCI_ROM_ADDRESS, 4, &size) != 4 || + vfio_user_region_read(&vdev->vbasedev, VFIO_PCI_CONFIG_REGION_INDEX, + PCI_ROM_ADDRESS, 4, &size) != 4 || + vfio_user_region_write(&vdev->vbasedev, + VFIO_PCI_CONFIG_REGION_INDEX, + PCI_ROM_ADDRESS, 4, &orig) != 4) { + error_report("%s(%s) failed: %m", __func__, vdev->vbasedev.name); + return; + } + } else { + if (pread(fd, &orig, 4, offset) != 4 || + pwrite(fd, &size, 4, offset) != 4 || + pread(fd, &size, 4, offset) != 4 || + pwrite(fd, &orig, 4, offset) != 4) { + error_report("%s(%s) failed: %m", __func__, vdev->vbasedev.name); + return; + } } size = ~(le32_to_cpu(size) & PCI_ROM_ADDRESS_MASK) + 1; -- 2.25.1