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authorAlex Sierra <alex.sierra@amd.com>2022-07-15 10:05:21 -0500
committerakpm <akpm@linux-foundation.org>2022-07-17 17:14:29 -0700
commit96c0657383fefdee04d4053bcc266bfa620d073d (patch)
treeea3e23ca756ef055a7befcf937f0a6d418e1d42b /drivers/dax
parent9e09b705fdb8f3892ec1efc2382f64adabc14c50 (diff)
tools: add selftests to hmm for COW in device memory
The objective is to test device migration mechanism in pages marked as COW, for private and coherent device type. In case of writing to COW private page(s), a page fault will migrate pages back to system memory first. Then, these pages will be duplicated. In case of COW device coherent type, pages are duplicated directly from device memory. Link: https://lkml.kernel.org/r/20220715150521.18165-15-alex.sierra@amd.com Signed-off-by: Alex Sierra <alex.sierra@amd.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Hildenbrand <david@redhat.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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