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| author | David S. Miller <davem@davemloft.net> | 2008-07-27 13:40:08 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-27 13:40:08 +0200 |
| commit | 15d3b4a26291c170563e2b25ded5de1324f93959 (patch) | |
| tree | 9bea548a7de5215c58a091d58f4eefdb92349f2c /arch/powerpc/mm/pgtable_64.c | |
| parent | ipcomp: Fix warnings after ipcomp consolidation. (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rol... (diff) | |
| download | linux-15d3b4a26291c170563e2b25ded5de1324f93959.tar.xz linux-15d3b4a26291c170563e2b25ded5de1324f93959.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/powerpc/mm/pgtable_64.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 3ef0ad2f9ca0..365e61ae5dbc 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -107,9 +107,18 @@ void __iomem * __ioremap_at(phys_addr_t pa, void *ea, unsigned long size, { unsigned long i; + /* Make sure we have the base flags */ if ((flags & _PAGE_PRESENT) == 0) flags |= pgprot_val(PAGE_KERNEL); + /* Non-cacheable page cannot be coherent */ + if (flags & _PAGE_NO_CACHE) + flags &= ~_PAGE_COHERENT; + + /* We don't support the 4K PFN hack with ioremap */ + if (flags & _PAGE_4K_PFN) + return NULL; + WARN_ON(pa & ~PAGE_MASK); WARN_ON(((unsigned long)ea) & ~PAGE_MASK); WARN_ON(size & ~PAGE_MASK); @@ -190,6 +199,13 @@ void __iomem * ioremap(phys_addr_t addr, unsigned long size) void __iomem * ioremap_flags(phys_addr_t addr, unsigned long size, unsigned long flags) { + /* writeable implies dirty for kernel addresses */ + if (flags & _PAGE_RW) + flags |= _PAGE_DIRTY; + + /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ + flags &= ~(_PAGE_USER | _PAGE_EXEC); + if (ppc_md.ioremap) return ppc_md.ioremap(addr, size, flags); return __ioremap(addr, size, flags); |