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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-10 13:26:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-10 13:26:17 +0100 |
| commit | c20c809f925910737bdb932fe86cfa261a12e559 (patch) | |
| tree | 9bcc454155d4efc894a6e7168bf5fe9222f4ddd7 /include/linux/pci.h | |
| parent | c4aa8b2a8b63a269d63acafc0358a7b9f5d9e563 (diff) | |
| parent | dcc3c9e37fbd70e728d08cce0e50121605390fa0 (diff) | |
Merge tag 'thunderbolt-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into char-misc-next
Mika writes:
thunderbolt: Changes for v4.21 merge window
* tag 'thunderbolt-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
thunderbolt: Export IOMMU based DMA protection support to userspace
iommu/vt-d: Do not enable ATS for untrusted devices
iommu/vt-d: Force IOMMU on for platform opt in hint
PCI / ACPI: Identify untrusted PCI devices
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 11c71c4ecf75..c786a2f27bee 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -396,6 +396,14 @@ struct pci_dev { unsigned int is_hotplug_bridge:1; unsigned int shpc_managed:1; /* SHPC owned by shpchp */ unsigned int is_thunderbolt:1; /* Thunderbolt controller */ + /* + * Devices marked being untrusted are the ones that can potentially + * execute DMA attacks and similar. They are typically connected + * through external ports such as Thunderbolt but not limited to + * that. When an IOMMU is enabled they should be getting full + * mappings to make sure they cannot access arbitrary memory. + */ + unsigned int untrusted:1; unsigned int __aer_firmware_first_valid:1; unsigned int __aer_firmware_first:1; unsigned int broken_intx_masking:1; /* INTx masking can't be used */ |