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drm/i915: replace X86_FEATURE_PAT with pat_enabled()

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PAT can be disabled on boot with "nopat" in the command line. Replace
one x86-ism with another, which is slightly more correct to prepare for
supporting other architectures.

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211202003048.1015511-1-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi 2021-12-01 16:30:48 -08:00
parent 1b9e8b1feb
commit bdd8b6c982
2 changed files with 5 additions and 6 deletions
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8
drivers/gpu/drm/i915/gem/i915_gem_mman.c
View File

@ -72,7 +72,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
if (args->flags & ~(I915_MMAP_WC))
return -EINVAL;
if (args->flags & I915_MMAP_WC && !boot_cpu_has(X86_FEATURE_PAT))
if (args->flags & I915_MMAP_WC && !pat_enabled())
return -ENODEV;
obj = i915_gem_object_lookup(file, args->handle);
@ -736,7 +736,7 @@ i915_gem_dumb_mmap_offset(struct drm_file *file,
if (HAS_LMEM(to_i915(dev)))
mmap_type = I915_MMAP_TYPE_FIXED;
else if (boot_cpu_has(X86_FEATURE_PAT))
else if (pat_enabled())
mmap_type = I915_MMAP_TYPE_WC;
else if (!i915_ggtt_has_aperture(&to_i915(dev)->ggtt))
return -ENODEV;
@ -792,7 +792,7 @@ i915_gem_mmap_offset_ioctl(struct drm_device *dev, void *data,
break;
case I915_MMAP_OFFSET_WC:
if (!boot_cpu_has(X86_FEATURE_PAT))
if (!pat_enabled())
return -ENODEV;
type = I915_MMAP_TYPE_WC;
break;
@ -802,7 +802,7 @@ i915_gem_mmap_offset_ioctl(struct drm_device *dev, void *data,
break;
case I915_MMAP_OFFSET_UC:
if (!boot_cpu_has(X86_FEATURE_PAT))
if (!pat_enabled())
return -ENODEV;
type = I915_MMAP_TYPE_UC;
break;

3
drivers/gpu/drm/i915/gem/i915_gem_pages.c
View File

@ -424,8 +424,7 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
goto err_unpin;
}
if (GEM_WARN_ON(type == I915_MAP_WC &&
!static_cpu_has(X86_FEATURE_PAT)))
if (GEM_WARN_ON(type == I915_MAP_WC && !pat_enabled()))
ptr = ERR_PTR(-ENODEV);
else if (i915_gem_object_has_struct_page(obj))
ptr = i915_gem_object_map_page(obj, type);