diff options
| author | Joerg Roedel <jroedel@suse.de> | 2016-07-01 16:42:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-27 09:47:32 -0700 |
| commit | e205592b31d0aed33edc1fbbb667dcba696aa173 (patch) | |
| tree | 5e2968d6b92e08de49cbd36d0ed3c68e5c5c2a51 /net/unix/af_unix.c | |
| parent | 72803a72a6b8444cf9cac844553056dae984dc3b (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