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drm/i915: disable platform support for vGPU huge gtt pages
author
Matthew Auld
<matthew.auld@intel.com>
Fri, 6 Oct 2017 22:18:31 +0000
(23:18 +0100)
committer
Chris Wilson
<chris@chris-wilson.co.uk>
Sat, 7 Oct 2017 09:12:03 +0000
(10:12 +0100)
Currently gvt gtt handling doesn't support huge page entries, so disable
for now.
v2: remove useless 48b PPGTT check
Suggested-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link:
https://patchwork.freedesktop.org/patch/msgid/20171006145041.21673-20-matthew.auld@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link:
https://patchwork.freedesktop.org/patch/msgid/20171006221833.32439-19-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/i915_gem.c
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diff --git
a/drivers/gpu/drm/i915/i915_gem.c
b/drivers/gpu/drm/i915/i915_gem.c
index f8c3ac1c8c671e0c74ff5dc74e89a09f26aa78dc..82a10036fb3880e10107d5c763721f862b4189af 100644
(file)
--- a/
drivers/gpu/drm/i915/i915_gem.c
+++ b/
drivers/gpu/drm/i915/i915_gem.c
@@
-4822,6
+4822,15
@@
int i915_gem_init(struct drm_i915_private *dev_priv)
mutex_lock(&dev_priv->drm.struct_mutex);
+ /*
+ * We need to fallback to 4K pages since gvt gtt handling doesn't
+ * support huge page entries - we will need to check either hypervisor
+ * mm can support huge guest page or just do emulation in gvt.
+ */
+ if (intel_vgpu_active(dev_priv))
+ mkwrite_device_info(dev_priv)->page_sizes =
+ I915_GTT_PAGE_SIZE_4K;
+
dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
if (!i915_modparams.enable_execlists) {