diff options
author | Bharat Bhushan <r65777@freescale.com> | 2013-07-04 02:57:44 -0400 |
---|---|---|
committer | Alexander Graf <agraf@suse.de> | 2013-10-17 08:49:39 -0400 |
commit | fc82cf113bded906e0fc1d4a8636a6776670b1c5 (patch) | |
tree | 528eb9c1107001d7c4e9b0bf40d8ec557432553e /arch/powerpc/kernel | |
parent | 95791988fec645d196e746fcc0e329e19f7b1347 (diff) |
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/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/process.c | 3 |
1 files changed, 2 insertions, 1 deletions
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) | |||
371 | * debug registers, set the debug registers from the values | 371 | * debug registers, set the debug registers from the values |
372 | * stored in the new thread. | 372 | * stored in the new thread. |
373 | */ | 373 | */ |
374 | static void switch_booke_debug_regs(struct thread_struct *new_thread) | 374 | void switch_booke_debug_regs(struct thread_struct *new_thread) |
375 | { | 375 | { |
376 | if ((current->thread.debug.dbcr0 & DBCR0_IDM) | 376 | if ((current->thread.debug.dbcr0 & DBCR0_IDM) |
377 | || (new_thread->debug.dbcr0 & DBCR0_IDM)) | 377 | || (new_thread->debug.dbcr0 & DBCR0_IDM)) |
378 | prime_debug_regs(new_thread); | 378 | prime_debug_regs(new_thread); |
379 | } | 379 | } |
380 | EXPORT_SYMBOL_GPL(switch_booke_debug_regs); | ||
380 | #else /* !CONFIG_PPC_ADV_DEBUG_REGS */ | 381 | #else /* !CONFIG_PPC_ADV_DEBUG_REGS */ |
381 | #ifndef CONFIG_HAVE_HW_BREAKPOINT | 382 | #ifndef CONFIG_HAVE_HW_BREAKPOINT |
382 | static void set_debug_reg_defaults(struct thread_struct *thread) | 383 | static void set_debug_reg_defaults(struct thread_struct *thread) |