Re: [PATCH v3 03/14] mm/hmm: allow hmm_range to be used with a mmu_interval_notifier or hmm_mirror

2019-11-13 Thread Christoph Hellwig
Looks good, Reviewed-by: Christoph Hellwig ___ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx

[PATCH v3 03/14] mm/hmm: allow hmm_range to be used with a mmu_interval_notifier or hmm_mirror

2019-11-12 Thread Jason Gunthorpe
From: Jason Gunthorpe hmm_mirror's handling of ranges does not use a sequence count which results in this bug: CPU0 CPU1 hmm_range_wait_until_valid(range) valid == true