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authorJoerg Roedel <joerg.roedel@amd.com>2009-10-09 12:31:20 -0400
committerJoerg Roedel <joerg.roedel@amd.com>2009-10-09 12:37:46 -0400
commitc5cca146aa03e1f60fb179df65f0dbaf17bc64ed (patch)
tree457cdf7d8b3a12f58328d06a2bfd8665b395b9ba /arch/x86/kernel/stacktrace.c
parentc7084b35eb1a4d3353a501508baf9d3d82822c93 (diff)
x86/amd-iommu: Workaround for erratum 63
There is an erratum for IOMMU hardware which documents undefined behavior when forwarding SMI requests from peripherals and the DTE of that peripheral has a sysmgt value of 01b. This problem caused weird IO_PAGE_FAULTS in my case. This patch implements the suggested workaround for that erratum into the AMD IOMMU driver. The erratum is documented with number 63. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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