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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-09-08 18:16:58 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-09-11 05:27:59 +0400 |
| commit | c6c9eacef09a94b5866b83556196440aca876702 (patch) | |
| tree | 7b3f4c86d44cdcd6c2ae7dc4ebc886a7ce22a2cb /arch/powerpc | |
| parent | e51ee31e8af22948dcc3b115978469b09c96c3fd (diff) | |
| download | linux-c6c9eacef09a94b5866b83556196440aca876702.tar.xz | |
powerpc/booke: Don't set DABR on 64-bit BookE, use DAC1 instead
Also remove a duplicate setting of it in the context switch path
on BookE.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 678ff132e8b0..0a3216433051 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -284,14 +284,13 @@ int set_dabr(unsigned long dabr) return ppc_md.set_dabr(dabr); /* XXX should we have a CPU_FTR_HAS_DABR ? */ -#if defined(CONFIG_PPC64) || defined(CONFIG_6xx) - mtspr(SPRN_DABR, dabr); -#endif - #if defined(CONFIG_BOOKE) mtspr(SPRN_DAC1, dabr); +#elif defined(CONFIG_PPC_BOOK3S) + mtspr(SPRN_DABR, dabr); #endif + return 0; } @@ -372,15 +371,16 @@ struct task_struct *__switch_to(struct task_struct *prev, #endif /* CONFIG_SMP */ - if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr)) - set_dabr(new->thread.dabr); - #if defined(CONFIG_BOOKE) /* If new thread DAC (HW breakpoint) is the same then leave it */ if (new->thread.dabr) set_dabr(new->thread.dabr); +#else + if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr)) + set_dabr(new->thread.dabr); #endif + new_thread = &new->thread; old_thread = ¤t->thread; |