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authorChris Wilson <chris@chris-wilson.co.uk>2012-03-02 16:06:59 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2012-03-02 16:12:09 +0000
commit866a61a2590f0c5ae6592a13d4e3de3e68f5e373 (patch)
treedd6a06c5e91e8ad8e42ff0b52d1c575c3db978b1
parent1c653786895fc30be0e88455ce5f9caf9adc835d (diff)
sna: Disable vmap on 965gm
The sampler just dies if it encounters a snoopable page, for no apparent reason. Whilst I encountered the bug on Crestline, disable it for the rest of gen4 just to be safe. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-rw-r--r--src/sna/kgem.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 1ec9fb4c..cc80278f 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -599,6 +599,8 @@ void kgem_init(struct kgem *kgem, int fd, struct pci_device *dev, int gen)
#if defined(USE_VMAP)
if (!DBG_NO_VMAP)
kgem->has_vmap = gem_param(kgem, I915_PARAM_HAS_VMAP) > 0;
+ if (gen == 40)
+ kgem->has_vmap = false; /* sampler dies with snoopable memory */
#endif
DBG(("%s: using vmap=%d\n", __FUNCTION__, kgem->has_vmap));