tree 43f2968d66b8cadac7920c93cee9b4ef58e9ccf3
parent ea29286146db6c72683af76bc8297cebeeec6d13
author Christian König <christian.koenig@amd.com> 1401888596 +0200
committer Alex Deucher <alexander.deucher@amd.com> 1402366010 -0400

drm/radeon: stop poisoning the GART TLB

When we set the valid bit on invalid GART entries they are
loaded into the TLB when an adjacent entry is loaded. This
poisons the TLB with invalid entries which are sometimes
not correctly removed on TLB flush.

For stable inclusion the patch probably needs to be modified a bit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>