diff options
| author | Aashish Sharma <aashish@aashishsharma.net> | 2025-11-19 13:16:13 +0800 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2025-11-20 11:33:04 +0100 |
| commit | 6b38a108eeb3936b21643191db535a35dd7c890b (patch) | |
| tree | fe8b74ddfa7b305cf3c7d1589ac7b7a4f96816fc | |
| parent | cb3db5a39e2a6b6396df1780d39a250f649d2e3a (diff) | |
iommu/vt-d: Fix unused invalidation hint in qi_desc_iotlb
Invalidation hint (ih) in the function 'qi_desc_iotlb' is initialized
to zero and never used. It is embedded in the 0th bit of the 'addr'
parameter. Get the correct 'ih' value from there.
Fixes: f701c9f36bcb ("iommu/vt-d: Factor out invalidation descriptor composition")
Signed-off-by: Aashish Sharma <aashish@aashishsharma.net>
Link: https://lore.kernel.org/r/20251009010903.1323979-1-aashish@aashishsharma.net
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | drivers/iommu/intel/iommu.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index 3056583d7f56..dcc5466d35f9 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -1097,7 +1097,7 @@ static inline void qi_desc_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, struct qi_desc *desc) { u8 dw = 0, dr = 0; - int ih = 0; + int ih = addr & 1; if (cap_write_drain(iommu->cap)) dw = 1; |