| commit | 704126ad81b8cb7d3d70adb9ecb143f4d3fb38af | |
| author | Yu Zhao <yu.zhao@intel.com> | |
| Sun, 4 Jan 2009 08:28:52 +0000 (4 16:28 +0800) | ||
| committer | David Woodhouse <David.Woodhouse@intel.com> | |
| Mon, 9 Feb 2009 11:03:17 +0000 (9 11:03 +0000) | ||
| tree | e73c4d595799661757b7505cd67833addef0635e | treesnapshot (tar.gz zip) |
| parent | 43f7392ba9e2585bf34f21399b1ed78692b5d437 | commitdiff |
VT-d: handle Invalidation Queue Error to avoid system hang
When hardware detects any error with a descriptor from the invalidation
queue, it stops fetching new descriptors from the queue until software
clears the Invalidation Queue Error bit in the Fault Status register.
Following fix handles the IQE so the kernel won't be trapped in an
infinite loop.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
When hardware detects any error with a descriptor from the invalidation
queue, it stops fetching new descriptors from the queue until software
clears the Invalidation Queue Error bit in the Fault Status register.
Following fix handles the IQE so the kernel won't be trapped in an
infinite loop.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| drivers/pci/dmar.c | diffblobblamehistory | |
| drivers/pci/intr_remapping.c | diffblobblamehistory | |
| include/linux/intel-iommu.h | diffblobblamehistory |