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| author | Bharat Bhushan <r65777@freescale.com> | 2013-07-04 12:27:44 +0530 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-17 14:49:39 +0200 |
| commit | fc82cf113bded906e0fc1d4a8636a6776670b1c5 (patch) | |
| tree | 528eb9c1107001d7c4e9b0bf40d8ec557432553e /arch | |
| parent | 95791988fec645d196e746fcc0e329e19f7b1347 (diff) | |
| download | linux-fc82cf113bded906e0fc1d4a8636a6776670b1c5.tar.gz linux-fc82cf113bded906e0fc1d4a8636a6776670b1c5.tar.bz2 linux-fc82cf113bded906e0fc1d4a8636a6776670b1c5.zip | |
powerpc: export debug registers 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>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/switch_to.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index 2be5618cdec6..9ee12610af02 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -35,6 +35,7 @@ extern void giveup_vsx(struct task_struct *); extern void enable_kernel_spe(void); extern void giveup_spe(struct task_struct *); extern void load_up_spe(struct task_struct *); +extern void switch_booke_debug_regs(struct thread_struct *new_thread); #ifndef CONFIG_SMP extern void discard_lazy_cpu_state(void); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index a2b9231cfd48..c24a90667675 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -371,12 +371,13 @@ 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.debug.dbcr0 & DBCR0_IDM) || (new_thread->debug.dbcr0 & DBCR0_IDM)) prime_debug_regs(new_thread); } +EXPORT_SYMBOL_GPL(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) |