diff options
| author |   Jon Derrick <jonathan.derrick@intel.com> | 2020-05-27 10:56:17 -0600 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2020-05-29 15:11:52 +0200 |
| commit | bba9cc2cf82840bd3c9b3f4f7edac2dc8329c241 (patch) | |
| tree | 8f6d0f30d5b5651e45ae87364c0d5b8cfbe74a67 | |
| parent | iommu/vt-d: Allocate domain info for real DMA sub-devices (diff) | |
| download | linux-dev-bba9cc2cf82840bd3c9b3f4f7edac2dc8329c241.tar.xz linux-dev-bba9cc2cf82840bd3c9b3f4f7edac2dc8329c241.zip | |
iommu/vt-d: Remove real DMA lookup in find_domain
By removing the real DMA indirection in find_domain(), we can allow
sub-devices of a real DMA device to have their own valid
device_domain_info. The dmar lookup and context entry removal paths have
been fixed to account for sub-devices.
Fixes: 2b0140c69637 ("iommu/vt-d: Use pci_real_dma_dev() for mapping")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200527165617.297470-4-jonathan.derrick@intel.com
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207575
Signed-off-by: Joerg Roedel <jroedel@suse.de>
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 6d39b9bd89a6..5767882aa80f 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2436,9 +2436,6 @@ struct dmar_domain *find_domain(struct device *dev) if (unlikely(attach_deferred(dev) || iommu_dummy(dev))) return NULL; - if (dev_is_pci(dev)) - dev = &pci_real_dma_dev(to_pci_dev(dev))->dev; - /* No lock here, assumes no domain exit in normal case */ info = get_domain_info(dev); if (likely(info)) |