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| author | Bjorn Helgaas <bhelgaas@google.com> | 2026-06-23 17:32:00 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-06-23 17:32:00 -0500 |
| commit | 5ea9159447890425c37455e14f47eb243fcb3dd5 (patch) | |
| tree | 2f59c8e38daea7d49b0e94aa116ce01f24d4277a /drivers/pci | |
| parent | 1eaa2b8d4c278582d90c8a08da1e32547e0b43d0 (diff) | |
| parent | 0ba76b19fd4c7256787eab0283c759b18eb76876 (diff) | |
| download | linux-next-5ea9159447890425c37455e14f47eb243fcb3dd5.tar.gz linux-next-5ea9159447890425c37455e14f47eb243fcb3dd5.zip | |
Merge branch 'pci/p2pdma'
- Prevent P2PDMA as well as CPU access to non-mappable BARs, e.g., s390 ISM
BARs (Matt Evans)
- Add Intel QAT, DSA, IAA devices to whitelist (Lukas Wunner)
* pci/p2pdma:
PCI/P2PDMA: Add Intel QAT, DSA, IAA devices to whitelist
PCI/P2PDMA: Avoid returning a provider for non_mappable_bars
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/p2pdma.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 7c898542af8d..b2d5266f8653 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -262,6 +262,9 @@ int pcim_p2pdma_init(struct pci_dev *pdev) struct pci_p2pdma *p2p; int i, ret; + if (pdev->non_mappable_bars) + return -EOPNOTSUPP; + p2p = rcu_dereference_protected(pdev->p2pdma, 1); if (p2p) return 0; @@ -318,7 +321,8 @@ struct p2pdma_provider *pcim_p2pdma_provider(struct pci_dev *pdev, int bar) { struct pci_p2pdma *p2p; - if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) + if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM) || + pdev->non_mappable_bars) return NULL; p2p = rcu_dereference_protected(pdev->p2pdma, 1); @@ -548,6 +552,16 @@ static const struct pci_p2pdma_whitelist_entry { {PCI_VENDOR_ID_INTEL, 0x2033, 0}, {PCI_VENDOR_ID_INTEL, 0x2020, 0}, {PCI_VENDOR_ID_INTEL, 0x09a2, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DSA_SPR0, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IAX_SPR0, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DSA_GNRD, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_DSA_DMR, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IAA_DMR, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QAT_4XXX, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QAT_401XX, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QAT_402XX, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QAT_420XX, 0}, + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QAT_6XXX, 0}, /* Google SoCs. */ {PCI_VENDOR_ID_GOOGLE, PCI_ANY_ID, 0}, {} |