agp/intel: Use a non-reserved value for the cache field of the PTEs.
I don't know if this is what we'll want to be using long term, we'll see.
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index df85ed9..c3c870b 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -296,6 +296,11 @@
off_t pg_start, int mask_type)
{
int i, j;
+ u32 cache_bits = 0;
+
+ if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB) {
+ cache_bits = I830_PTE_SYSTEM_CACHED;
+ }
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,