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| author | Christoph Hellwig <hch@lst.de> | 2019-08-06 19:05:47 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-08-07 20:58:06 +0300 |
| commit | 309f9a4f5e1a233d5df2101b9394ee689d9e463f (patch) | |
| tree | c0847f8ec2e351fcb1e1d4d6eb0e63f4e6ece197 /mm/hmm.c | |
| parent | 05c23af4a1b34df5838ebab2da1d6f802cf5ece3 (diff) | |
| download | linux-309f9a4f5e1a233d5df2101b9394ee689d9e463f.tar.xz | |
mm/hmm: don't abuse pte_index() in hmm_vma_handle_pmd
pte_index is an internal arch helper in various architectures, without
consistent semantics. Open code that calculation of a PMD index based on
the virtual address instead.
Link: https://lore.kernel.org/r/20190806160554.14046-10-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm/hmm.c')
| -rw-r--r-- | mm/hmm.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -486,7 +486,7 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk, if (pmd_protnone(pmd) || fault || write_fault) return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk); - pfn = pmd_pfn(pmd) + pte_index(addr); + pfn = pmd_pfn(pmd) + ((addr & ~PMD_MASK) >> PAGE_SHIFT); for (i = 0; addr < end; addr += PAGE_SIZE, i++, pfn++) { if (pmd_devmap(pmd)) { hmm_vma_walk->pgmap = get_dev_pagemap(pfn, |