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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-10-25 15:18:54 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-10-25 17:32:03 +0200 |
| commit | e82c175e63229ea495a0a0b5305a98b5b6ee5346 (patch) | |
| tree | b04dc9bdcd8b02116c112050430be33869f7719f /drivers/iommu/intel | |
| parent | iommu/vt-d: debugfs: Support dumping a specified page table (diff) | |
| download | linux-e82c175e63229ea495a0a0b5305a98b5b6ee5346.tar.xz linux-e82c175e63229ea495a0a0b5305a98b5b6ee5346.zip | |
Revert "iommu/vt-d: Remove unused function"
This reverts commit c61c255e114c52682546447ed44d3470b5708134.
The pasid_set_wpe() helper, which was removed by the reverted commit,
is still used by the nesting translation support in the iommufd tree.
To avoid a merge conflict, revert the commit.
Link: https://lore.kernel.org/linux-kernel/20231025153455.283c5b12@canb.auug.org.au/
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231025131854.375388-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel')
| -rw-r--r-- | drivers/iommu/intel/pasid.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c index 06ddb3c927f5..8f92b92f3d2a 100644 --- a/drivers/iommu/intel/pasid.c +++ b/drivers/iommu/intel/pasid.c @@ -336,6 +336,15 @@ static inline void pasid_set_fault_enable(struct pasid_entry *pe) } /* + * Setup the WPE(Write Protect Enable) field (Bit 132) of a + * scalable mode PASID entry. + */ +static inline void pasid_set_wpe(struct pasid_entry *pe) +{ + pasid_set_bits(&pe->val[2], 1 << 4, 1 << 4); +} + +/* * Setup the P(Present) field (Bit 0) of a scalable mode PASID * entry. */ |