drm/i915: Check stolen memory size before calling drm_mm_init

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Add check for zero usable stolen memory before calling drm_mm_init
to support configurations where stolen memory exists but is fully
reserved.

Also skip memory test in cases that usable stolen is smaller than
page size(amount mapped and used to test memory).

v2:
- skiping test if available memory is smaller than page size (Lucas)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Steve Carbonari <steven.carbonari@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220223194946.725328-1-jose.souza@intel.com

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This commit is contained in:

José Roberto de Souza 2022-02-23 11:49:46 -08:00

parent bbd57d16d5

commit b8986c889e

2 changed files with 12 additions and 5 deletions

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9

drivers/gpu/drm/i915/gem/i915_gem_stolen.c

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8

drivers/gpu/drm/i915/intel_memory_region.c

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