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| author | Joerg Roedel <jroedel@suse.de> | 2016-07-01 16:42:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-27 08:42:15 -0700 |
| commit | 592354224cfd414078743efab8670ab7b56a2b0c (patch) | |
| tree | 2189d010907e61634e495892c1847d0338bd7450 /net/unix/af_unix.c | |
| parent | a1cf08028ab4288b352423409257f7ac0823f8d3 (diff) | |
iommu/amd: Fix unity mapping initialization race
commit 522e5cb76d0663c88f96b6a8301451c8efa37207 upstream.
There is a race condition in the AMD IOMMU init code that
causes requested unity mappings to be blocked by the IOMMU
for a short period of time. This results on boot failures
and IO_PAGE_FAULTs on some machines.
Fix this by making sure the unity mappings are installed
before all other DMA is blocked.
Fixes: aafd8ba0ca74 ('iommu/amd: Implement add_device and remove_device')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions