diff options
| author | Naval Alcalá <ari@naval.cat> | 2026-05-09 05:43:44 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-05-11 11:19:36 +0300 |
| commit | 2cda2e10dc8343ae01eae9e999a876b7e7d37861 (patch) | |
| tree | a4ef0a671a6b76aceb8be51cea9150c66852058c /drivers/gpu/tests/git@radix-linux.su:pub | |
| parent | 15dd29ca620648a18a0334a3f6b26af181154a23 (diff) | |
| download | linux-2cda2e10dc8343ae01eae9e999a876b7e7d37861.tar.xz | |
iommu/vt-d: Disable DMAR for Intel Q35 IGFX
Intel Q35 integrated graphics (8086:29b2) exhibits broken DMAR
behaviour similar to other G4x/GM45 devices for which DMAR is
already disabled via quirks.
When DMAR is enabled, the system may hard lock up during boot or
early device initialization, requiring a reset.
Add the missing PCI ID to the existing quirk list to disable
DMAR for this device.
Fixes: 1f76249cc3be ("iommu/vt-d: Declare Broadwell igfx dmar support snafu")
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=201185
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=216064
Signed-off-by: Naval Alcalá <ari@naval.cat>
Link: https://lore.kernel.org/r/20260410161622.13549-1-ari@naval.cat
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/gpu/tests/git@radix-linux.su:pub')
0 files changed, 0 insertions, 0 deletions