diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-11-01 06:38:20 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-11-01 06:38:20 -0800 |
| commit | 4b1c46a383aafc137bc91a0f9698bfc11e062d1b (patch) | |
| tree | dd8b793c534b6f83cc16f38ba96d0ff4722a7344 /include/asm-powerpc/system.h | |
| parent | 30574b61611ccd29677989097f8c8a5d9a73d873 (diff) | |
| parent | 4393c4f6788cee65095dd838cfeca6edefbfeb52 (diff) | |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Make alignment exception always check exception table
[POWERPC] Disallow kprobes on emulate_step and branch_taken
[POWERPC] Make mmiowb's io_sync preempt safe
[POWERPC] Make high hugepage areas preempt safe
[POWERPC] Make current preempt-safe
[POWERPC] qe_lib: qe_issue_cmd writes wrong value to CECDR
[POWERPC] Use 4kB iommu pages even on 64kB-page systems
[POWERPC] Fix oprofile support for e500 in arch/powerpc
[POWERPC] Fix rmb() for e500-based machines it
[POWERPC] Fix various offb issues
Diffstat (limited to 'include/asm-powerpc/system.h')
| -rw-r--r-- | include/asm-powerpc/system.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h index 43627596003b..f7b1227d6454 100644 --- a/include/asm-powerpc/system.h +++ b/include/asm-powerpc/system.h @@ -25,8 +25,8 @@ * * We have to use the sync instructions for mb(), since lwsync doesn't * order loads with respect to previous stores. Lwsync is fine for - * rmb(), though. Note that lwsync is interpreted as sync by - * 32-bit and older 64-bit CPUs. + * rmb(), though. Note that rmb() actually uses a sync on 32-bit + * architectures. * * For wmb(), we use sync since wmb is used in drivers to order * stores to system memory with respect to writes to the device. @@ -34,7 +34,7 @@ * SMP since it is only used to order updates to system memory. */ #define mb() __asm__ __volatile__ ("sync" : : : "memory") -#define rmb() __asm__ __volatile__ ("lwsync" : : : "memory") +#define rmb() __asm__ __volatile__ (__stringify(LWSYNC) : : : "memory") #define wmb() __asm__ __volatile__ ("sync" : : : "memory") #define read_barrier_depends() do { } while(0) |