Revert "x86: disable IOMMUs on kernel crash"
commit8f9f55e83e939724490d7cde3833c4883c6d1310
authorChris Wright <chrisw@sous-sol.org>
Sat, 3 Apr 2010 01:27:54 +0000 (2 18:27 -0700)
committerJoerg Roedel <joerg.roedel@amd.com>
Wed, 7 Apr 2010 09:51:17 +0000 (7 11:51 +0200)
treecc284bcf2e0d2924bb3771eded943e889ada68f4
parent549c90dc9a6d659e792b2a42a0930c7da015ea4a
Revert "x86: disable IOMMUs on kernel crash"

This effectively reverts commit 61d047be99757fd9b0af900d7abce9a13a337488.

Disabling the IOMMU can potetially allow DMA transactions to
complete without being translated.  Leave it enabled, and allow
crash kernel to do the IOMMU reinitialization properly.

Cc: stable@kernel.org
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
arch/x86/kernel/crash.c