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| author | Will Deacon <will@kernel.org> | 2020-11-19 09:46:58 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-11-19 09:50:06 +0000 |
| commit | 388255ce95cfe456409efd9a8a2ab7be41dd422c (patch) | |
| tree | b24d1d0e4d9bfbc70d40452160ec8d32fa261191 /drivers/iommu/intel | |
| parent | 4d213e76a359e540ca786ee937da7f35faa8e5f8 (diff) | |
| parent | ff828729be446b86957f7c294068758231cd2183 (diff) | |
| download | linux-388255ce95cfe456409efd9a8a2ab7be41dd422c.tar.gz linux-388255ce95cfe456409efd9a8a2ab7be41dd422c.tar.bz2 linux-388255ce95cfe456409efd9a8a2ab7be41dd422c.zip | |
Merge tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into for-next/iommu/fixes
Pull in x86 fixes from Thomas, as they include a change to the Intel DMAR
code on which we depend:
* tag 'x86-urgent-2020-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
iommu/vt-d: Cure VF irqdomain hickup
x86/platform/uv: Fix copied UV5 output archtype
x86/platform/uv: Drop last traces of uv_flush_tlb_others
Diffstat (limited to 'drivers/iommu/intel')
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 404b40af31cb..b2e804473209 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -333,6 +333,11 @@ static void dmar_pci_bus_del_dev(struct dmar_pci_notify_info *info) dmar_iommu_notify_scope_dev(info); } +static inline void vf_inherit_msi_domain(struct pci_dev *pdev) +{ + dev_set_msi_domain(&pdev->dev, dev_get_msi_domain(&pdev->physfn->dev)); +} + static int dmar_pci_bus_notifier(struct notifier_block *nb, unsigned long action, void *data) { @@ -342,8 +347,20 @@ static int dmar_pci_bus_notifier(struct notifier_block *nb, /* Only care about add/remove events for physical functions. * For VFs we actually do the lookup based on the corresponding * PF in device_to_iommu() anyway. */ - if (pdev->is_virtfn) + if (pdev->is_virtfn) { + /* + * Ensure that the VF device inherits the irq domain of the + * PF device. Ideally the device would inherit the domain + * from the bus, but DMAR can have multiple units per bus + * which makes this impossible. The VF 'bus' could inherit + * from the PF device, but that's yet another x86'sism to + * inflict on everybody else. + */ + if (action == BUS_NOTIFY_ADD_DEVICE) + vf_inherit_msi_domain(pdev); return NOTIFY_DONE; + } + if (action != BUS_NOTIFY_ADD_DEVICE && action != BUS_NOTIFY_REMOVED_DEVICE) return NOTIFY_DONE; |