diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index ebd87c337394..7fbb10804319 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2384,9 +2384,19 @@ int i915_gem_init_aliasing_ppgtt(struct drm_i915_private *i915) if (IS_ERR(ppgtt)) return PTR_ERR(ppgtt); + if (WARN_ON(ppgtt->base.total < ggtt->base.total)) { + err = -ENODEV; + goto err_ppgtt; + } + if (ppgtt->base.allocate_va_range) { + /* Note we only pre-allocate as far as the end of the global + * GTT. On 48b / 4-level page-tables, the difference is very, + * very significant! We have to preallocate as GVT/vgpu does + * not like the page directory disappearing. + */ err = ppgtt->base.allocate_va_range(&ppgtt->base, - 0, ppgtt->base.total); + 0, ggtt->base.total); if (err) goto err_ppgtt; } |