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| author |   LEROY Christophe <christophe.leroy@c-s.fr> | 2015-01-19 17:04:38 +0100 |
|---|---|---|
| committer |   Scott Wood <scottwood@freescale.com> | 2015-01-29 20:11:51 -0600 |
| commit | a7b9f671f2d141528491c346e21e8a179cee9d21 (patch) | |
| tree | 963edf92d3bc966992c78c4fa94d368003f9b396 /arch/powerpc/mm/pgtable_32.c | |
| parent | powerpc/perf: fix fsl_emb_pmu_start to write correct pmc value (diff) | |
| download | linux-dev-a7b9f671f2d141528491c346e21e8a179cee9d21.tar.xz linux-dev-a7b9f671f2d141528491c346e21e8a179cee9d21.zip | |
powerpc32: adds handling of _PAGE_RO
Some powerpc like the 8xx don't have a RW bit in PTE bits but a RO
(Read Only) bit. This patch implements the handling of a _PAGE_RO flag
to be used in place of _PAGE_RW
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[scottwood@freescale.com: fix whitespace]
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 6eec88685a71..833139620431 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -146,7 +146,7 @@ void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags) { /* writeable implies dirty for kernel addresses */ - if (flags & _PAGE_RW) + if ((flags & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO) flags |= _PAGE_DIRTY | _PAGE_HWWRITE; /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ |