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authorStephen Rothwell <sfr@canb.auug.org.au>2006-04-02 02:45:04 +1000
committerPaul Mackerras <paulus@samba.org>2006-04-02 09:32:15 +1000
commit856d08ec46c5ecf3df13827c492fb6998fdc8322 (patch)
tree24d64c8000c80da137167a08dfb42de5759c2cc0 /arch/powerpc/kernel/setup_64.c
parent2c6967750a6f1e206a44ab5cf43c36aacb91372b (diff)
downloadlinux-856d08ec46c5ecf3df13827c492fb6998fdc8322.tar.bz2
[PATCH] powerpc: iSeries needs slb_initialize to be called
Since the powerpc 64k pages patch went in, systems that have SLBs (like Power4 iSeries) needed to have slb_initialize called to set up some variables for the SLB miss handler. This was not being called on the boot processor on iSeries, so on single cpu iSeries machines, we would get apparent memory curruption as soon as we entered user mode. This patch fixes that by calling slb_initialize on the boot cpu if the processor has an SLB. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
-rw-r--r--arch/powerpc/kernel/setup_64.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 59aa92cd6fa4..13e91c4d70a8 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -215,12 +215,10 @@ void __init early_setup(unsigned long dt_ptr)
/*
* Initialize stab / SLB management except on iSeries
*/
- if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
- if (cpu_has_feature(CPU_FTR_SLB))
- slb_initialize();
- else
- stab_initialize(get_paca()->stab_real);
- }
+ if (cpu_has_feature(CPU_FTR_SLB))
+ slb_initialize();
+ else if (!firmware_has_feature(FW_FEATURE_ISERIES))
+ stab_initialize(get_paca()->stab_real);
DBG(" <- early_setup()\n");
}