From 473980a99316c0e788bca50996375a2815124ce1 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Fri, 11 Jan 2008 14:02:47 +1100 Subject: [POWERPC] Fix CPU hotplug when using the SLB shadow buffer Before we register the SLB shadow buffer, we need to invalidate the entries in the buffer, otherwise we can end up stale entries from when we previously offlined the CPU. This does this invalidate as well as unregistering the buffer with PHYP before we offline the cpu. Tested and fixes crashes seen on 970MP (thanks to tonyb) and POWER5. Signed-off-by: Michael Neuling Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/pseries/lpar.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/platforms/pseries/lpar.c') diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 9a455d46379d..34317aa148a8 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -272,6 +272,7 @@ void vpa_init(int cpu) */ addr = __pa(&slb_shadow[cpu]); if (firmware_has_feature(FW_FEATURE_SPLPAR)) { + slb_shadow_clear_all(); ret = register_slb_shadow(hwcpu, addr); if (ret) printk(KERN_ERR -- cgit v1.2.1