[PATCH] ppc64: restore r13 in an unrecoverable exception

From: Anton Blanchard <anton@samba.org> We have to restore r13 when entering unrecoverable_exception.

[PATCH] ppc64: restore r13 in an unrecoverable exception
From: Anton Blanchard <anton@samba.org> We have to restore r13 when entering unrecoverable_exception.
4d72de23 · Andrew Morton · Linus Torvalds · 6e9d79e2 · 4d72de23
Commit 4d72de23 authored Apr 12, 2004 by Andrew Morton Committed by Linus Torvalds Apr 12, 2004
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arch/ppc64/kernel/entry.S arch/ppc64/kernel/entry.S +1 -0

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--- a/arch/ppc64/kernel/entry.S
+++ b/arch/ppc64/kernel/entry.S
@@ -469,6 +469,7 @@ do_work:
 	b	.ret_from_except
 unrecov_restore:
+	mfspr   r13,SPRG3
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	.unrecoverable_exception
 	b	unrecov_restore