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Commit f1434a48 authored by Alan Curry's avatar Alan Curry Committed by Paul Mackerras
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[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: default avatarAlan Curry <pacman@TheWorld.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 01aaed9d

arch/powerpc/kernel/head_32.S

+1 −0
Original line number Diff line number Diff line
@@ -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:

arch/ppc/kernel/head.S

+1 −0
Original line number Diff line number Diff line
@@ -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