diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-01-31 15:37:33 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 09:39:40 +0100 |
| commit | c4f590e84a60667cb62c3ad6c82119f8f7223184 (patch) | |
| tree | 9dfc062d6f7fc225043033f1ee7480a7d103fdac /drivers/iommu | |
| parent | 7bd1d1305c8931cf03ca493c2cc1113563d97413 (diff) | |
iommu/vt-d: Set No Execute Enable bit in PASID table entry
[ Upstream commit e06d24435596c8afcaa81c0c498f5b0ec4ee2b7c ]
Setup No Execute Enable bit (Bit 133) of a scalable mode PASID entry.
This is to allow the use of XD bit of the first level page table.
Fixes: ddf09b6d43ec ("iommu/vt-d: Setup pasid entries for iova over first level")
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20230126095438.354205-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel/pasid.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iommu/intel/pasid.c b/drivers/iommu/intel/pasid.c index 0060bd089dc7..9a3dd55aaa1c 100644 --- a/drivers/iommu/intel/pasid.c +++ b/drivers/iommu/intel/pasid.c @@ -426,6 +426,16 @@ static inline void pasid_set_page_snoop(struct pasid_entry *pe, bool value) } /* + * Setup No Execute Enable bit (Bit 133) of a scalable mode PASID + * entry. It is required when XD bit of the first level page table + * entry is about to be set. + */ +static inline void pasid_set_nxe(struct pasid_entry *pe) +{ + pasid_set_bits(&pe->val[2], 1 << 5, 1 << 5); +} + +/* * Setup the Page Snoop (PGSNP) field (Bit 88) of a scalable mode * PASID entry. */ @@ -631,6 +641,7 @@ int intel_pasid_setup_first_level(struct intel_iommu *iommu, pasid_set_domain_id(pte, did); pasid_set_address_width(pte, iommu->agaw); pasid_set_page_snoop(pte, !!ecap_smpwc(iommu->ecap)); + pasid_set_nxe(pte); /* Setup Present and PASID Granular Transfer Type: */ pasid_set_translation_type(pte, PASID_ENTRY_PGTT_FL_ONLY); |