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| author |   Logan Gunthorpe <logang@deltatee.com> | 2019-08-12 11:30:47 -0600 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2019-08-16 08:41:54 -0500 |
| commit | 5daf40b039249ef98d49610d14293dca3464b91f (patch) | |
| tree | 2f7299191acb169a918ce15f5f8d4874814eb59c /drivers/pci/p2pdma.c | |
| parent | PCI/P2PDMA: dma_map() requests that traverse the host bridge (diff) | |
| download | linux-dev-5daf40b039249ef98d49610d14293dca3464b91f.tar.xz linux-dev-5daf40b039249ef98d49610d14293dca3464b91f.zip | |
PCI/P2PDMA: Allow IOMMU for host bridge whitelist
Now that we map the requests correctly we can remove the iommu_present()
restriction.
Link: https://lore.kernel.org/r/20190730163545.4915-14-logang@deltatee.com
Link: https://lore.kernel.org/r/20190812173048.9186-14-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/pci/p2pdma.c')
| -rw-r--r-- | drivers/pci/p2pdma.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index bca1ffc7075e..d8c824097d26 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -18,7 +18,6 @@ #include <linux/percpu-refcount.h> #include <linux/random.h> #include <linux/seq_buf.h> -#include <linux/iommu.h> #include <linux/xarray.h> enum pci_p2pdma_map_type { @@ -328,9 +327,6 @@ static bool host_bridge_whitelist(struct pci_dev *a, struct pci_dev *b) struct pci_host_bridge *host_a = pci_find_host_bridge(a->bus); struct pci_host_bridge *host_b = pci_find_host_bridge(b->bus); - if (iommu_present(a->dev.bus) || iommu_present(b->dev.bus)) - return false; - if (host_a == host_b) return __host_bridge_whitelist(host_a, true); |