diff options
| author | Bharat Bhushan <bharat.bhushan@freescale.com> | 2013-04-08 00:32:17 (GMT) |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2013-04-17 21:26:59 (GMT) |
| commit | c86b102243a0b000bb7fef6373216e305b470947 (patch) | |
| tree | b8ded5d7527c89985e79a63375306a510d04d2e6 | |
| parent | fcb86a8331691faae5200d522a22dab122897da3 (diff) | |
| download | linux-fsl-qoriq-c86b102243a0b000bb7fef6373216e305b470947.tar.xz | |
powerpc: export debug register save function for KVM
KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
| -rw-r--r-- | arch/powerpc/include/asm/switch_to.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index 200d763..50b357f 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -30,6 +30,10 @@ extern void enable_kernel_spe(void); extern void giveup_spe(struct task_struct *); extern void load_up_spe(struct task_struct *); +#ifdef CONFIG_PPC_ADV_DEBUG_REGS +extern void switch_booke_debug_regs(struct thread_struct *new_thread); +#endif + #ifndef CONFIG_SMP extern void discard_lazy_cpu_state(void); #else diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 8143067..5f3d9db 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -354,12 +354,13 @@ static void prime_debug_regs(struct thread_struct *thread) * debug registers, set the debug registers from the values * stored in the new thread. */ -static void switch_booke_debug_regs(struct thread_struct *new_thread) +void switch_booke_debug_regs(struct thread_struct *new_thread) { if ((current->thread.dbcr0 & DBCR0_IDM) || (new_thread->dbcr0 & DBCR0_IDM)) prime_debug_regs(new_thread); } +EXPORT_SYMBOL(switch_booke_debug_regs); #else /* !CONFIG_PPC_ADV_DEBUG_REGS */ #ifndef CONFIG_HAVE_HW_BREAKPOINT static void set_debug_reg_defaults(struct thread_struct *thread) |