From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from db8outboundpool.messaging.microsoft.com (mail-db8lp0188.outbound.messaging.microsoft.com [213.199.154.188]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "MSIT Machine Auth CA 2" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 8ABB52C0182 for ; Thu, 4 Jul 2013 17:06:24 +1000 (EST) From: Bharat Bhushan To: , , , , , , , , Subject: [PATCH 1/4 v6] powerpc: export debug registers save function for KVM Date: Thu, 4 Jul 2013 12:27:44 +0530 Message-ID: <1372921067-19678-2-git-send-email-Bharat.Bhushan@freescale.com> In-Reply-To: <1372921067-19678-1-git-send-email-Bharat.Bhushan@freescale.com> References: <1372921067-19678-1-git-send-email-Bharat.Bhushan@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: Bharat Bhushan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , KVM need this function when switching from vcpu to user-space thread. My subsequent patch will use this function. Signed-off-by: Bharat Bhushan --- v5->v6 - switch_booke_debug_regs() not guarded by the compiler switch arch/powerpc/include/asm/switch_to.h | 1 + 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 200d763..db68f1d 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -29,6 +29,7 @@ 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 01ff496..da586aa 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -362,12 +362,13 @@ 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) -- 1.7.0.4