diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vdso32/gettimeofday.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vdso64/gettimeofday.S | 7 |
3 files changed, 14 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 1ce0ae3..b27e268 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -176,6 +176,13 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, */ discard_lazy_cpu_state(); + /* + * Force reload of FP/VEC. + * This has to be done before copying stuff into current->thread.fpr/vr + * for the reasons explained in the previous comment. + */ + regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC); + err |= __copy_from_user(¤t->thread.fpr, &sc->fp_regs, FP_REGS_SIZE); #ifdef CONFIG_ALTIVEC @@ -197,9 +204,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, current->thread.vrsave = 0; #endif /* CONFIG_ALTIVEC */ - /* Force reload of FP/VEC */ - regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC); - return err; } diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S index 05909f7..72ca26d 100644 --- a/arch/powerpc/kernel/vdso32/gettimeofday.S +++ b/arch/powerpc/kernel/vdso32/gettimeofday.S @@ -32,6 +32,8 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday) mr r11,r4 /* r11 saves tz */ bl __get_datapage@local /* get data page */ mr r9, r3 /* datapage ptr in r9 */ + cmplwi r10,0 /* check if tv is NULL */ + beq 3f bl __do_get_xsec@local /* get xsec from tb & kernel */ bne- 2f /* out of line -> do syscall */ @@ -50,7 +52,7 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday) mulhwu r5,r5,r6 stw r5,TVAL32_TV_USEC(r10) - cmpli cr0,r11,0 /* check if tz is NULL */ +3: cmplwi r11,0 /* check if tz is NULL */ beq 1f lwz r4,CFG_TZ_MINUTEWEST(r9)/* fill tz */ lwz r5,CFG_TZ_DSTTIME(r9) diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S index 40ffd9b..2d7a510 100644 --- a/arch/powerpc/kernel/vdso64/gettimeofday.S +++ b/arch/powerpc/kernel/vdso64/gettimeofday.S @@ -1,5 +1,4 @@ - - /* +/* * Userland implementation of gettimeofday() for 64 bits processes in a * ppc64 kernel for use in the vDSO * @@ -32,6 +31,8 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday) mr r11,r3 /* r11 holds tv */ mr r10,r4 /* r10 holds tz */ bl V_LOCAL_FUNC(__get_datapage) /* get data page */ + cmpldi r10,0 /* check if tv is NULL */ + beq 2f bl V_LOCAL_FUNC(__do_get_xsec) /* get xsec from tb & kernel */ lis r7,15 /* r7 = 1000000 = USEC_PER_SEC */ ori r7,r7,16960 @@ -43,8 +44,8 @@ V_FUNCTION_BEGIN(__kernel_gettimeofday) * XSEC_PER_SEC */ rldicl r0,r0,44,20 - cmpldi cr0,r10,0 /* check if tz is NULL */ std r0,TVAL64_TV_USEC(r11) /* store usec in tv */ +2: cmpldi r10,0 /* check if tz is NULL */ beq 1f lwz r4,CFG_TZ_MINUTEWEST(r3)/* fill tz */ lwz r5,CFG_TZ_DSTTIME(r3) |