Re: [PATCH] powerpc: fix altivec_unavailable_exception Oopses
flat view
From: Alan Curry <hidden>
Date: 2006-02-22 07:20:09
Also in:
lkml
Kumar Gala writes the following:
Would you mine providing a patch for arch/ppc/kernel/head.S and adding a signed-off-by line.
OK, combined patch... applies clean to 2.6.16-rc4, applies with fuzz to
2.6.15.4, both compiled and tested. Patch prevents Oopsing of
CONFIG_ALTIVEC=n kernel by user executing altivec instruction in both cases.
Signed-off-by: Alan Curry <redacted>
--- arch/ppc/kernel/head.S.orig 2006-02-21 20:58:08.000000000 -0500
+++ arch/ppc/kernel/head.S 2006-02-21 20:58:11.000000000 -0500@@ -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 --- arch/powerpc/kernel/head_32.S.orig 2006-02-21 15:58:18.000000000 -0500 +++ arch/powerpc/kernel/head_32.S 2006-02-21 15:59:23.000000000 -0500
@@ -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: