iommu/vt-d: Fix SVM IOTLB flush handling

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Change the 'pages' parameter to 'unsigned long' to avoid overflow.

Fix the device-IOTLB flush parameter calculation — the size of the IOTLB
flush is indicated by the position of the least significant zero bit in
the address field. For example, a value of 0x12345f000 will flush from
0x123440000 to 0x12347ffff (256KiB).

Finally, the cap_pgsel_inv() is not relevant to SVM; the spec says that
*all* implementations must support page-selective invaliation for
"first-level" translations. So don't check for it.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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This commit is contained in:

David Woodhouse 2015-10-20 15:52:13 +01:00

parent b9997e385e

commit 5d52f482eb

1 changed files with 15 additions and 20 deletions

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drivers/iommu/intel-svm.c

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