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authorOlof Johansson <olof@lixom.net>2013-12-28 13:01:47 -0800
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-12-30 14:02:34 +1100
commit7d4151b5098fb0bf7f6f8d1156e1ab9d83260580 (patch)
treed13ce35204de1c6e7ac6ce4d1825f0fbfd8ad390
parent286e4f90a72c0b0621dde0294af6ed4b0baddabb (diff)
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powerpc: Fix alignment of secondary cpu spin vars
Commit 5c0484e25ec0 ('powerpc: Endian safe trampoline') resulted in losing proper alignment of the spinlock variables used when booting secondary CPUs, causing some quite odd issues with failing to boot on PA Semi-based systems. This showed itself on ppc64_defconfig, but not on pasemi_defconfig, so it had gone unnoticed when I initially tested the LE patch set. Fix is to add explicit alignment instead of relying on good luck. :) [ It appears that there is a different issue with PA Semi systems however this fix is definitely correct so applying anyway -- BenH ] Fixes: 5c0484e25ec0 ('powerpc: Endian safe trampoline') Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=67811 Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/kernel/head_64.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index fad2abd..4f0946d 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -80,6 +80,7 @@ END_FTR_SECTION(0, 1)
* of the function that the cpu should jump to to continue
* initialization.
*/
+ .balign 8
.globl __secondary_hold_spinloop
__secondary_hold_spinloop:
.llong 0x0
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