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authorLinus Torvalds <torvalds@quad.osdl.org>2006-03-04 15:00:45 -0800
committerLinus Torvalds <torvalds@quad.osdl.org>2006-03-04 15:00:45 -0800
commitc05b47704570b015134522c36142cd17bd48640a (patch)
tree11080365ff881392954d0f26f57dffbcbd47f984
parent3af1efe8a301f5b1c813f5f761cb1e10d6175605 (diff)
ppc64: make sure to align stack pointer to 16 bytes at boot
yaboot is scrogged and calls us with an invalid stack alignment, it seems. Thanks to David Woodhouse to pointing me to the problem. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/powerpc/kernel/head_64.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 11f2cd5af7d..9b65029dd2a 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -1537,6 +1537,9 @@ _STATIC(__boot_from_prom)
mr r28,r6
mr r27,r7
+ /* Align the stack to 16-byte boundary for broken yaboot */
+ rldicr r1,r1,0,59
+
/* Make sure we are running in 64 bits mode */
bl .enable_64b_mode