From f1434a4854407a262d194411245eb9ee66221f90 Mon Sep 17 00:00:00 2001 From: Alan Curry Date: Wed, 22 Feb 2006 01:42:37 -0500 Subject: [PATCH] [PATCH] powerpc: fix altivec_unavailable_exception Oopses altivec_unavailable_exception is called without setting r3... it looks like the r3 that actually gets passed in as struct pt_regs *regs is the undisturbed value of r3 at the time the altivec instruction was encountered. The user actually gets to choose the pt_regs printed in the Oops! This fixes the oops by passing the correct pt_regs pointer to altivec_unavailable_exception. Signed-off-by: Alan Curry Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/head_32.S | 1 + arch/ppc/kernel/head.S | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 03b25f9359..a0579e859b 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -714,6 +714,7 @@ AltiVecUnavailable: #ifdef CONFIG_ALTIVEC bne load_up_altivec /* if from user, just load it up */ #endif /* CONFIG_ALTIVEC */ + addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception) PerformanceMonitor: diff --git a/arch/ppc/kernel/head.S b/arch/ppc/kernel/head.S index c5a890dca9..53ea845fb9 100644 --- a/arch/ppc/kernel/head.S +++ b/arch/ppc/kernel/head.S @@ -751,6 +751,7 @@ AltiVecUnavailable: #ifdef CONFIG_ALTIVEC bne load_up_altivec /* if from user, just load it up */ #endif /* CONFIG_ALTIVEC */ + addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception) #ifdef CONFIG_PPC64BRIDGE -- 2.39.5