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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2023-06-16 16:38:15 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-06-21 14:08:53 +1000 |
| commit | c8eebc4a99f15280654f23e914e746c40a516e50 (patch) | |
| tree | 7db9247bfdad27e6c39fc308339d73c31d73e332 | |
| parent | d933557b858f78d7b702e70614b469a84b72e56c (diff) | |
| download | linux-stable-c8eebc4a99f15280654f23e914e746c40a516e50.tar.gz linux-stable-c8eebc4a99f15280654f23e914e746c40a516e50.tar.bz2 linux-stable-c8eebc4a99f15280654f23e914e746c40a516e50.zip | |
powerpc/mm/dax: Fix the condition when checking if altmap vmemap can cross-boundary
Without this fix, the last subsection vmemmap can end up in memory even if
the namespace is created with -M mem and has sufficient space in the altmap
area.
Fixes: cf387d9644d8 ("libnvdimm/altmap: Track namespace boundaries in altmap")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com <mailto:sachinp@linux.ibm.com>>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230616110826.344417-6-aneesh.kumar@linux.ibm.com
| -rw-r--r-- | arch/powerpc/mm/init_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 05b0d584e50b..fe1b83020e0d 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -189,7 +189,7 @@ static bool altmap_cross_boundary(struct vmem_altmap *altmap, unsigned long star unsigned long nr_pfn = page_size / sizeof(struct page); unsigned long start_pfn = page_to_pfn((struct page *)start); - if ((start_pfn + nr_pfn) > altmap->end_pfn) + if ((start_pfn + nr_pfn - 1) > altmap->end_pfn) return true; if (start_pfn < altmap->base_pfn) |