Allocations in the heap and stack tend to be small, with several
allocations sharing the same page. Sharing the same page for different
allocations with different access patterns leads to thrashing when we
migrate data back and forth on GPU and CPU access. To avoid this we
disable HMM migrations for head and stack VMAs.
Regards,
Felix
Am 2023-07-12 um 10:42 schrieb Christoph Hellwig:
On Wed, Jul 12, 2023 at 10:38:29PM +0800, Kefeng Wang wrote:
Use the helpers to simplify code.
Nothing against your addition of a helper, but a GPU driver really
should have no business even looking at this information..
