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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-10-06 18:57:22 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-10-07 14:13:00 +0200 |
| commit | 3257f43d9296ed7adcc84e48f6ddf5313cf29266 (patch) | |
| tree | 97cfb5a7bcd2d21452a7716c4daa8ea512fc1ab7 /arch/arm | |
| parent | ARM: 5746/1: Handle possible translation errors in ARMv6/v7 coherent_user_range (diff) | |
| download | linux-3257f43d9296ed7adcc84e48f6ddf5313cf29266.tar.xz linux-3257f43d9296ed7adcc84e48f6ddf5313cf29266.zip | |
ARM: 5747/1: Fix the start_pg value in free_memmap()
If sparsemem is enabled, the start_pfn passed to the free_memmap()
function corresponds to an area of memory not known to the kernel and
pfn_to_page returns a wrong value. The (start_pfn - 1), however, is
known to the kernel.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 877c492f8e10..40940d7ce4ff 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -483,7 +483,7 @@ free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn) /* * Convert start_pfn/end_pfn to a struct page pointer. */ - start_pg = pfn_to_page(start_pfn); + start_pg = pfn_to_page(start_pfn - 1) + 1; end_pg = pfn_to_page(end_pfn); /* |