9d4296a7d4
When calling OpenCL clEnqueueSVMMigrateMem() on a region of memory that is backed by pte_none() or zero pages, migrate_vma_setup() will fill the source PFN array with an entry indicating the source page is zero. Use this to optimize migration to device private memory by allocating GPU memory and zero filling it instead of failing to migrate the page. Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> |
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