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| author | Thomas Gleixner <tglx@linutronix.de> | 2022-11-25 00:26:05 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-12-05 22:22:33 +0100 |
| commit | b6d5fc3a5245c65f7c83440460a1566d09cc9038 (patch) | |
| tree | 6fb8a289f07a3253e51591e30df0422abab8436e /arch/x86/include/asm/pci.h | |
| parent | PCI/MSI: Add support for per device MSI[X] domains (diff) | |
| download | linux-b6d5fc3a5245c65f7c83440460a1566d09cc9038.tar.xz linux-b6d5fc3a5245c65f7c83440460a1566d09cc9038.zip | |
x86/apic/vector: Provide MSI parent domain
Enable MSI parent domain support in the x86 vector domain and fixup the
checks in the iommu implementations to check whether device::msi::domain is
the default MSI parent domain. That keeps the existing logic to protect
e.g. devices behind VMD working.
The interrupt remap PCI/MSI code still works because the underlying vector
domain still provides the same functionality.
None of the other x86 PCI/MSI, e.g. XEN and HyperV, implementations are
affected either. They still work the same way both at the low level and the
PCI/MSI implementations they provide.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232326.034672592@linutronix.de
Diffstat (limited to 'arch/x86/include/asm/pci.h')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index c4789de0da09..b40c462b4af3 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -92,6 +92,7 @@ void pcibios_scan_root(int bus); struct irq_routing_table *pcibios_get_irq_routing_table(void); int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); +bool pci_dev_has_default_msi_parent_domain(struct pci_dev *dev); #define HAVE_PCI_MMAP #define arch_can_pci_mmap_wc() pat_enabled() |