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| author | Kevin Cernekee <cernekee@gmail.com> | 2011-01-05 23:31:30 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-07-25 17:26:54 +0100 |
| commit | 464fd83e841a16f4ea1325b33eb08170ef5cd1f4 (patch) | |
| tree | 2e182c5da3bf09701e048ec7edef90665feb9f44 /arch/mips/mm/pgtable-64.c | |
| parent | 273f2d7e64f9fd22192b4cd31e7408284a721e69 (diff) | |
| download | blackbird-op-linux-464fd83e841a16f4ea1325b33eb08170ef5cd1f4.tar.gz blackbird-op-linux-464fd83e841a16f4ea1325b33eb08170ef5cd1f4.zip | |
MIPS: Limit fixrange_init() to the FIXMAP region
fixrange_init() allocates page tables for all addresses higher than
FIXADDR_TOP. On processors that override the default FIXADDR_TOP
address of 0xfffe_0000, this can consume up to 4 pages (1 page per 4MB)
for pgd's that are never used.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1980/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm/pgtable-64.c')
| -rw-r--r-- | arch/mips/mm/pgtable-64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/mm/pgtable-64.c b/arch/mips/mm/pgtable-64.c index 78eaa4f0b0ec..cda4e300eb0a 100644 --- a/arch/mips/mm/pgtable-64.c +++ b/arch/mips/mm/pgtable-64.c @@ -76,5 +76,5 @@ void __init pagetable_init(void) * Fixed mappings: */ vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; - fixrange_init(vaddr, 0, pgd_base); + fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base); } |
