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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-10-09 22:31:56 +0200 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-10-09 22:31:56 +0200 |
commit | 6a4690c22f5da1eb1c898b61b6a80da52fbd976f (patch) | |
tree | a03891a32abe0da191fb765fe669a597e07423c6 /arch/arm/mm/fault-armv.c | |
parent | Merge branches 'machtypes', 'core', 'ep93xx', 'ks8695', 'netdev' and 'sa1100'... (diff) | |
parent | [ARM] Improve non-executable support (diff) | |
download | linux-6a4690c22f5da1eb1c898b61b6a80da52fbd976f.tar.xz linux-6a4690c22f5da1eb1c898b61b6a80da52fbd976f.zip |
Merge branch 'ptebits' into devel
Conflicts:
arch/arm/Kconfig
Diffstat (limited to 'arch/arm/mm/fault-armv.c')
-rw-r--r-- | arch/arm/mm/fault-armv.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index af6ed6ef9a81..81d0b8772de3 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -23,7 +23,7 @@ #include <asm/pgtable.h> #include <asm/tlbflush.h> -static unsigned long shared_pte_mask = L_PTE_CACHEABLE; +static unsigned long shared_pte_mask = L_PTE_MT_BUFFERABLE; /* * We take the easy way out of this problem - we make the @@ -65,9 +65,10 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address) * If this page isn't present, or is already setup to * fault (ie, is old), we can safely ignore any issues. */ - if (ret && pte_val(entry) & shared_pte_mask) { + if (ret && (pte_val(entry) & L_PTE_MT_MASK) != shared_pte_mask) { flush_cache_page(vma, address, pte_pfn(entry)); - pte_val(entry) &= ~shared_pte_mask; + pte_val(entry) &= ~L_PTE_MT_MASK; + pte_val(entry) |= shared_pte_mask; set_pte_at(vma->vm_mm, address, pte, entry); flush_tlb_page(vma, address); } @@ -199,7 +200,7 @@ void __init check_writebuffer_bugs(void) unsigned long *p1, *p2; pgprot_t prot = __pgprot(L_PTE_PRESENT|L_PTE_YOUNG| L_PTE_DIRTY|L_PTE_WRITE| - L_PTE_BUFFERABLE); + L_PTE_MT_BUFFERABLE); p1 = vmap(&page, 1, VM_IOREMAP, prot); p2 = vmap(&page, 1, VM_IOREMAP, prot); @@ -220,7 +221,7 @@ void __init check_writebuffer_bugs(void) if (v) { printk("failed, %s\n", reason); - shared_pte_mask |= L_PTE_BUFFERABLE; + shared_pte_mask = L_PTE_MT_UNCACHED; } else { printk("ok\n"); } |