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b2dd45111e
Dynamic page table allocation might wake the shrinker when memory is requested for page table structures. As this happens when we try to allocate the virtual address during binding, our vma might be among the targets for eviction. We should do i915_vma_pin() and do pin early in there like Chris suggests but this is interim solution. Shield our vma from shrinker by incrementing pin count before the virtual address is allocated. The proper place to fix this would be in gem, inside of i915_vma_pin(). But we don't have that yet so take the short cut as a intermediate solution. Testcase: igt/gem_ctx_thrash Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Michel Thierry <michel.thierry@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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