diff options
| author | Patrick McHardy <kaber@trash.net> | 2010-05-10 18:39:28 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2010-05-10 18:39:28 +0200 |
| commit | 1e4b1057121bc756b91758a434b504d2010f6088 (patch) | |
| tree | b016cf2c728289c7e36d9e4e488f30ab0bd0ae6e /arch/mips/include/asm/stackframe.h | |
| parent | 3b254c54ec46eb022cb26ee6ab37fae23f5f7d6a (diff) | |
| parent | 3ee943728fff536edaf8f59faa58aaa1aa7366e3 (diff) | |
Merge branch 'master' of /repos/git/net-next-2.6
Conflicts:
net/bridge/br_device.c
net/bridge/br_forward.c
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'arch/mips/include/asm/stackframe.h')
| -rw-r--r-- | arch/mips/include/asm/stackframe.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h index 3b6da3330e3..c8419129e77 100644 --- a/arch/mips/include/asm/stackframe.h +++ b/arch/mips/include/asm/stackframe.h @@ -121,6 +121,25 @@ .endm #else .macro get_saved_sp /* Uniprocessor variation */ +#ifdef CONFIG_CPU_LOONGSON2F + /* + * Clear BTB (branch target buffer), forbid RAS (return address + * stack) to workaround the Out-of-order Issue in Loongson2F + * via its diagnostic register. + */ + move k0, ra + jal 1f + nop +1: jal 1f + nop +1: jal 1f + nop +1: jal 1f + nop +1: move ra, k0 + li k0, 3 + mtc0 k0, $22 +#endif /* CONFIG_CPU_LOONGSON2F */ #if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32) lui k1, %hi(kernelsp) #else |