Commit e82c175e authored by Lu Baolu's avatar Lu Baolu Committed by Joerg Roedel
Browse files

Revert "iommu/vt-d: Remove unused function" 

This reverts commit c61c255e.

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: default avatarLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231025131854.375388-1-baolu.lu@linux.intel.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 2b437e80

drivers/iommu/intel/pasid.c

+9 −0
Original line number Diff line number Diff line
@@ -335,6 +335,15 @@ static inline void pasid_set_fault_enable(struct pasid_entry *pe) 
	pasid_set_bits(&pe->val[0], 1 << 1, 0);

}



/*

 * 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.