diff options
| author | Lu Baolu <[email protected]> | 2023-03-29 21:47:20 +0800 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2023-03-31 10:06:15 +0200 |
| commit | bfd3c6b9fa4a1dc78139dd1621d5bea321ffa69d (patch) | |
| tree | 9a159f9aa827ab992bbcf856405831f5bd02c6df /drivers/fpga/fpga-bridge.c | |
| parent | c7d624520c1bd4e42d8ceb8283d6505fc90acccb (diff) | |
iommu/vt-d: Allow zero SAGAW if second-stage not supported
The VT-d spec states (in section 11.4.2) that hardware implementations
reporting second-stage translation support (SSTS) field as Clear also
report the SAGAW field as 0. Fix an inappropriate check in alloc_iommu().
Fixes: 792fb43ce2c9 ("iommu/vt-d: Enable Intel IOMMU scalable mode by default")
Suggested-by: Raghunathan Srinivasan <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Signed-off-by: Jacob Pan <[email protected]>
Signed-off-by: Lu Baolu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions