drm/i915: GEM on PAE has problems - disable it for now.
On PAE systems, GEM allocates pages using shmem, and passes these
pages to be bound into AGP, however the AGP interfaces + the x86
set_memory interfaces all take unsigned long not dma_addr_t.
The initial fix for this was a mess, so we need to do this correctly
for 2.6.29.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 553dd4b..afa8a12 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -717,7 +717,7 @@
value = dev->pci_device;
break;
case I915_PARAM_HAS_GEM:
- value = 1;
+ value = dev_priv->has_gem;
break;
default:
DRM_ERROR("Unknown parameter %d\n", param->param);
@@ -830,6 +830,14 @@
dev_priv->regs = ioremap(base, size);
+#ifdef CONFIG_HIGHMEM64G
+ /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
+ dev_priv->has_gem = 0;
+#else
+ /* enable GEM by default */
+ dev_priv->has_gem = 1;
+#endif
+
i915_gem_load(dev);
/* Init HWS */