diff options
Diffstat (limited to 'arch/arm/vfp')
| -rw-r--r-- | arch/arm/vfp/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/vfp/vfpmodule.c | 9 |
2 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/vfp/Makefile b/arch/arm/vfp/Makefile index 39f6d8e1af73..6de73aab0195 100644 --- a/arch/arm/vfp/Makefile +++ b/arch/arm/vfp/Makefile @@ -4,8 +4,8 @@ # Copyright (C) 2001 ARM Limited # -# EXTRA_CFLAGS := -DDEBUG -# EXTRA_AFLAGS := -DDEBUG +# ccflags-y := -DDEBUG +# asflags-y := -DDEBUG KBUILD_AFLAGS :=$(KBUILD_AFLAGS:-msoft-float=-Wa,-mfpu=softvfp+vfp) LDFLAGS +=--no-warn-mismatch diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 0797cb528b46..bbf3da012afd 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -153,7 +153,7 @@ static struct notifier_block vfp_notifier_block = { * Raise a SIGFPE for the current process. * sicode describes the signal being raised. */ -void vfp_raise_sigfpe(unsigned int sicode, struct pt_regs *regs) +static void vfp_raise_sigfpe(unsigned int sicode, struct pt_regs *regs) { siginfo_t info; @@ -489,8 +489,11 @@ void vfp_flush_hwstate(struct thread_info *thread) /* * VFP hardware can lose all context when a CPU goes offline. - * Safely clear our held state when a CPU has been killed, and - * re-enable access to VFP when the CPU comes back online. + * As we will be running in SMP mode with CPU hotplug, we will save the + * hardware state at every thread switch. We clear our held state when + * a CPU has been killed, indicating that the VFP hardware doesn't contain + * a threads VFP state. When a CPU starts up, we re-enable access to the + * VFP hardware. * * Both CPU_DYING and CPU_STARTING are called on the CPU which * is being offlined/onlined. |