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[PATCH] vfio/pci: Don't setup VFIO MSI-X for Kunlun VF
From: |
Cai Huoqing |
Subject: |
[PATCH] vfio/pci: Don't setup VFIO MSI-X for Kunlun VF |
Date: |
Tue, 14 Dec 2021 13:45:34 +0800 |
No support MSI-X in BAIDU KUNLUN Virtual Function devices,
so add a quirk to avoid setuping VFIO MSI-X
Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev>
---
hw/vfio/pci.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 7b45353ce2..15f76bbe56 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1994,6 +1994,13 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t
pos, Error **errp)
ret = vfio_setup_pcie_cap(vdev, pos, size, errp);
break;
case PCI_CAP_ID_MSIX:
+ /*
+ * BAIDU KUNLUN Virtual Function devices for KUNLUN AI processor
+ * don't support MSI-X, so don't setup VFIO MSI-X here.
+ */
+ if (vdev->vendor_id == PCI_VENDOR_ID_BAIDU &&
+ vdev->device_id == PCI_DEVICE_ID_KUNLUN_VF)
+ break;
ret = vfio_msix_setup(vdev, pos, errp);
break;
case PCI_CAP_ID_PM:
--
2.25.1
- [PATCH] vfio/pci: Don't setup VFIO MSI-X for Kunlun VF,
Cai Huoqing <=