From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Graf Date: Thu, 31 Oct 2013 21:18:20 +0000 Subject: [PULL 35/51] powerpc: export debug registers save function for KVM Message-Id: <1383254316-11243-36-git-send-email-agraf@suse.de> List-Id: References: <1383254316-11243-1-git-send-email-agraf@suse.de> In-Reply-To: <1383254316-11243-1-git-send-email-agraf@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "kvm@vger.kernel.org mailing list" Cc: kvm-ppc@vger.kernel.org, Gleb Natapov , Paolo Bonzini , Bharat Bhushan , Bharat Bhushan From: Bharat Bhushan KVM need this function when switching from vcpu to user-space thread. My subsequent patch will use this function. Signed-off-by: Bharat Bhushan Acked-by: Michael Neuling Signed-off-by: Alexander Graf --- arch/powerpc/include/asm/switch_to.h | 1 + arch/powerpc/kernel/process.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index 2be5618..9ee1261 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 a2b9231..c24a906 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) -- 1.8.1.4