VFIO: Add the SPR_DSA and SPR_IAX devices to the denylist

Due to an erratum with the SPR_DSA and SPR_IAX devices, it is not secure to assign
these devices to virtual machines. Add the PCI IDs of these devices to the VFIO
denylist to ensure that this is handled appropriately by the VFIO subsystem.

The SPR_DSA and SPR_IAX devices are on-SOC devices for the Sapphire Rapids
(and related) family of products that perform data movement and compression.

Signed-off-by: Arjan van de Ven <[email protected]>

Author: fenrus75

drivers/dma/idxd/registers.h

@@ -6,9 +6,6 @@
 #include <uapi/linux/idxd.h>
 
 /* PCI Config */
-#define PCI_DEVICE_ID_INTEL_DSA_SPR0	0x0b25
-#define PCI_DEVICE_ID_INTEL_IAX_SPR0	0x0cfe
-
 #define DEVICE_VERSION_1		0x100
 #define DEVICE_VERSION_2		0x200
 

drivers/vfio/pci/vfio_pci.c

@@ -71,6 +71,8 @@ static bool vfio_pci_dev_in_denylist(struct pci_dev *pdev)
 		case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
 		case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
 		case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
+		case PCI_DEVICE_ID_INTEL_DSA_SPR0:
+		case PCI_DEVICE_ID_INTEL_IAX_SPR0:
 			return true;
 		default:
 			return false;

include/linux/pci_ids.h

@@ -2687,8 +2687,10 @@
 #define PCI_DEVICE_ID_INTEL_I960	0x0960
 #define PCI_DEVICE_ID_INTEL_I960RM	0x0962
 #define PCI_DEVICE_ID_INTEL_HDA_HSW_0	0x0a0c
+#define PCI_DEVICE_ID_INTEL_DSA_SPR0	0x0b25
 #define PCI_DEVICE_ID_INTEL_HDA_HSW_2	0x0c0c
 #define PCI_DEVICE_ID_INTEL_CENTERTON_ILB	0x0c60
+#define PCI_DEVICE_ID_INTEL_IAX_SPR0	0x0cfe
 #define PCI_DEVICE_ID_INTEL_HDA_HSW_3	0x0d0c
 #define PCI_DEVICE_ID_INTEL_HDA_BYT	0x0f04
 #define PCI_DEVICE_ID_INTEL_SST_BYT	0x0f28