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authorZhenyu Wang <zhenyuw@linux.intel.com>2010-11-02 17:30:47 +0800
committerChris Wilson <chris@chris-wilson.co.uk>2010-11-04 09:39:28 +0000
commit8d0f56708292ca5c256ee3b7187d124afee81d93 (patch)
tree408b76c17505b7607eb0ef7a075c504239e7931f /drivers/char
parente07ac3a0b17ed9dec26b742ea41514063ef12386 (diff)
downloadblackbird-op-linux-8d0f56708292ca5c256ee3b7187d124afee81d93.tar.gz
blackbird-op-linux-8d0f56708292ca5c256ee3b7187d124afee81d93.zip
agp/intel: restore cache behavior on sandybridge
This restores cache behavior for default AGP_USER_MEMORY as uncached, and leave default AGP_USER_CACHED_MEMORY as LLC only. I've seen different cache behavior on one sandybridge desktop CPU vs. another mobile CPU. Until we figure out how to detect the real cache config, restore back to the original behavior now. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/agp/intel-gtt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 6b6760ea2435..791216d33ed0 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1210,7 +1210,7 @@ static void gen6_write_entry(dma_addr_t addr, unsigned int entry,
unsigned int gfdt = flags & AGP_USER_CACHED_MEMORY_GFDT;
u32 pte_flags;
- if (type_mask == AGP_USER_UNCACHED_MEMORY)
+ if (type_mask == AGP_USER_MEMORY)
pte_flags = GEN6_PTE_UNCACHED | I810_PTE_VALID;
else if (type_mask == AGP_USER_CACHED_MEMORY_LLC_MLC) {
pte_flags = GEN6_PTE_LLC | I810_PTE_VALID;
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