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authorLogan Gunthorpe <logang@deltatee.com>2019-08-12 11:30:47 -0600
committerBjorn Helgaas <bhelgaas@google.com>2019-08-16 08:41:54 -0500
commit5daf40b039249ef98d49610d14293dca3464b91f (patch)
tree2f7299191acb169a918ce15f5f8d4874814eb59c /drivers/pci/p2pdma.c
parent5d52e1abcd47957f5f4cae26659768655e3ac9f5 (diff)
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.c4
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);