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| author | Joerg Roedel <joerg.roedel@amd.com> | 2010-05-31 15:05:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-07-05 11:15:50 -0700 |
| commit | 0ac5ad9b26e8879728141ad76b56a8b9cc72cd98 (patch) | |
| tree | 8926affd13bf978ee46964166a5149bf92e0db6b /fs/xfs | |
| parent | 77b0b9457672d4cb8a3a5e32438737dd2b8bad79 (diff) | |
| download | lwn-0ac5ad9b26e8879728141ad76b56a8b9cc72cd98.tar.gz lwn-0ac5ad9b26e8879728141ad76b56a8b9cc72cd98.zip | |
x86/amd-iommu: Fall back to GART if initialization fails
commit d7f0776975334070a93370ae048fda0c31a91c38 upstream.
This patch implements a fallback to the GART IOMMU if this
is possible and the AMD IOMMU initialization failed.
Otherwise the fallback would be nommu which is very
problematic on machines with more than 4GB of memory or
swiotlb which hurts io-performance.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/xfs')
0 files changed, 0 insertions, 0 deletions