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| author | Marcin Nowakowski <marcin.nowakowski@imgtec.com> | 2017-04-11 10:00:34 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-06-08 15:51:58 +0300 |
| commit | 71eb989ab5a110df8bcbb9609bacde73feacbedd (patch) | |
| tree | 872144f38e6b157976533c74cc37eb220c5a59ee /arch | |
| parent | f7a31b5e7874f77464a4eae0a8ba84b9ae0b3a54 (diff) | |
| download | linux-71eb989ab5a110df8bcbb9609bacde73feacbedd.tar.xz | |
MIPS: mm: fixed mappings: correct initialisation
fixrange_init operates at PMD-granularity and expects the addresses to
be PMD-size aligned, but currently that might not be the case for
PKMAP_BASE unless it is defined properly, so ensure a correct alignment
is used before passing the address to fixrange_init.
fixed mappings: only align the start address that is passed to
fixrange_init rather than the value before adding the size, as we may
end up with uninitialised upper part of the range.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15948/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mm/pgtable-32.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/mm/pgtable-32.c b/arch/mips/mm/pgtable-32.c index adc6911ba748..b19a3c506b1e 100644 --- a/arch/mips/mm/pgtable-32.c +++ b/arch/mips/mm/pgtable-32.c @@ -51,15 +51,15 @@ void __init pagetable_init(void) /* * Fixed mappings: */ - vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; - fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base); + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1); + fixrange_init(vaddr & PMD_MASK, vaddr + FIXADDR_SIZE, pgd_base); #ifdef CONFIG_HIGHMEM /* * Permanent kmaps: */ vaddr = PKMAP_BASE; - fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base); + fixrange_init(vaddr & PMD_MASK, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base); pgd = swapper_pg_dir + __pgd_offset(vaddr); pud = pud_offset(pgd, vaddr); |