From: David S. Miller Date: Wed, 1 Feb 2006 02:35:05 +0000 (-0800) Subject: [SPARC64]: Don't clobber alt-global %g4 on window fixups. X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=30a6ecad9670d97c9d0fbfa7d80970aeb339bdec;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git [SPARC64]: Don't clobber alt-global %g4 on window fixups. If we are returning back to kernel mode, %g4 could be live (for example, in the case where we window spill in the etrap code). So do not change it's value if going back to kernel. Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/kernel/winfixup.S b/arch/sparc64/kernel/winfixup.S index ade991b7d079..320a762d0519 100644 --- a/arch/sparc64/kernel/winfixup.S +++ b/arch/sparc64/kernel/winfixup.S @@ -160,7 +160,7 @@ spill_fixup: andcc %g1, TSTATE_PRIV, %g0 saved and %g1, TSTATE_CWP, %g1 - be,pn %xcc, window_scheisse_from_user_common + be,a,pn %xcc, window_scheisse_from_user_common mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4 retry