drm/i915/gt: Remove local entries from GGTT on suspend

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Across suspend/resume, we clear the entire GGTT and rebuild from
scratch. In particular, we want to only preserve the global entries for
use by the HW, and delay reinstating the local binds until required by
the user. This means that we can evict any local binds in the global GTT,
saving any time in preserving their state, as they will be rebound on
demand.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/1947
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200528082427.21402-2-chris@chris-wilson.co.uk

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This commit is contained in:

Chris Wilson 2020-05-28 09:24:27 +01:00

parent dc6cd912c7

commit bffa18dd0b

3 changed files with 54 additions and 29 deletions

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23

drivers/gpu/drm/i915/gt/intel_ggtt.c

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59

drivers/gpu/drm/i915/i915_vma.c

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1

drivers/gpu/drm/i915/i915_vma.h

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