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authorZhenyu Wang <zhenyuw@linux.intel.com>2010-11-02 17:30:47 +0800
committerChris Wilson <chris@chris-wilson.co.uk>2010-11-02 10:05:47 +0000
commit897ef192514a6b0fc10a0ce3fe7e7aa0de09bc52 (patch)
treebfa709ceb59f7afaebfa64e057a782e0f99d59a4 /drivers/char/agp
parentd110852513148a7ec44fad4e036455aeb816d713 (diff)
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> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/char/agp')
-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 c51efe6f2c7..fc1637c32cb 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1288,7 +1288,7 @@ 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_MLC | I810_PTE_VALID;