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[PATCH] powerpc: fix altivec_unavailable_exception Oopses

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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 <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
This commit is contained in:
Alan Curry 2006-02-22 01:42:37 -05:00 • committed by Paul Mackerras
commit f1434a4854
2 changed files with 2 additions and 0 deletions
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1
arch/ppc/kernel/head.S
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@ -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