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author | Michal Simek <monstr@monstr.eu> | 2011-02-07 20:51:54 +0300 |
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committer | Michal Simek <monstr@monstr.eu> | 2011-02-07 21:12:30 +0300 |
commit | 1f80a67da2da4180355bc36b2691f16684b194fd (patch) | |
tree | 52e9273e5dcc77db79a27e40fa94247b95c4bbe8 /arch/microblaze/include/asm/pgtable.h | |
parent | 1649700408531ec64ae33af55a1091db50d1f7da (diff) | |
download | linux-1f80a67da2da4180355bc36b2691f16684b194fd.tar.xz |
microblaze: Fix pte_update function
Do not disable irq in asm but use irq macros.
Systems with MSR=0 couldn't use pte_update function
because msrclr was hardcoded.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/include/asm/pgtable.h')
-rw-r--r-- | arch/microblaze/include/asm/pgtable.h | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h index b23f68075879..885574a73f01 100644 --- a/arch/microblaze/include/asm/pgtable.h +++ b/arch/microblaze/include/asm/pgtable.h @@ -411,20 +411,19 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) static inline unsigned long pte_update(pte_t *p, unsigned long clr, unsigned long set) { - unsigned long old, tmp, msr; - - __asm__ __volatile__("\ - msrclr %2, 0x2\n\ - nop\n\ - lw %0, %4, r0\n\ - andn %1, %0, %5\n\ - or %1, %1, %6\n\ - sw %1, %4, r0\n\ - mts rmsr, %2\n\ - nop" - : "=&r" (old), "=&r" (tmp), "=&r" (msr), "=m" (*p) - : "r" ((unsigned long)(p + 1) - 4), "r" (clr), "r" (set), "m" (*p) - : "cc"); + unsigned long flags, old, tmp; + + raw_local_irq_save(flags); + + __asm__ __volatile__( "lw %0, %2, r0 \n" + "andn %1, %0, %3 \n" + "or %1, %1, %4 \n" + "sw %1, %2, r0 \n" + : "=&r" (old), "=&r" (tmp) + : "r" ((unsigned long)(p + 1) - 4), "r" (clr), "r" (set) + : "cc"); + + raw_local_irq_restore(flags); return old; } |