drm/ttm: Allow vm fault retries
Make use of the FAULT_FLAG_ALLOW_RETRY flag to allow dropping the mmap_sem while waiting for bo idle. FAULT_FLAG_ALLOW_RETRY appears to be primarily designed for disk waits but should work just as fine for GPU waits.. Signed-off-by:Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by:
Jakob Bornecrantz <jakob@vmware.com>
parent
4695b039
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