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| author | Olof Johansson <olof@lixom.net> | 2013-12-28 13:01:47 -0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-12-30 14:02:34 +1100 |
| commit | 7d4151b5098fb0bf7f6f8d1156e1ab9d83260580 (patch) | |
| tree | d13ce35204de1c6e7ac6ce4d1825f0fbfd8ad390 | |
| parent | 286e4f90a72c0b0621dde0294af6ed4b0baddabb (diff) | |
| download | blackbird-op-linux-7d4151b5098fb0bf7f6f8d1156e1ab9d83260580.tar.gz blackbird-op-linux-7d4151b5098fb0bf7f6f8d1156e1ab9d83260580.zip | |
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.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index fad2abdcbdfe..4f0946de2d5c 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 |
