Re: [Xen-devel] [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 ___ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel

[Xen-devel] [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