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| author | Takashi Iwai <tiwai@suse.de> | 2008-12-01 18:02:17 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-12-01 18:02:17 +0100 |
| commit | 3af4182cc5be7d5505f9801ee3297373f1872446 (patch) | |
| tree | 214348d40ed547a72f9612a7e5c94a01afded812 /arch/powerpc/kernel/entry_64.S | |
| parent | f5d4c67e41a262f0cdfaec1bb0fa8e5952187ef9 (diff) | |
| parent | c07f62e5f18123103459ff74e86af1518a5b8af5 (diff) | |
| download | op-kernel-dev-3af4182cc5be7d5505f9801ee3297373f1872446.zip op-kernel-dev-3af4182cc5be7d5505f9801ee3297373f1872446.tar.gz | |
Merge branch 'upstream' into topic/asoc
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index fd8b4ba..e0bcf93 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -57,12 +57,18 @@ system_call_common: beq- 1f ld r1,PACAKSAVE(r13) 1: std r10,0(r1) - crclr so std r11,_NIP(r1) std r12,_MSR(r1) std r0,GPR0(r1) std r10,GPR1(r1) ACCOUNT_CPU_USER_ENTRY(r10, r11) + /* + * This "crclr so" clears CR0.SO, which is the error indication on + * return from this system call. There must be no cmp instruction + * between it and the "mfcr r9" below, otherwise if XER.SO is set, + * CR0.SO will get set, causing all system calls to appear to fail. + */ + crclr so std r2,GPR2(r1) std r3,GPR3(r1) std r4,GPR4(r1) @@ -884,7 +890,7 @@ _GLOBAL(enter_prom) mtlr r0 blr -#ifdef CONFIG_FTRACE +#ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE _GLOBAL(mcount) _GLOBAL(_mcount) |
