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From: Bharat Bhushan <r65777@freescale.com>
To: <kvm-ppc@vger.kernel.org>, <kvm@vger.kernel.org>, <agraf@suse.de>,
	<scottwood@freescale.com>, <tiejun.chen@windriver.com>
Cc: Bharat Bhushan <Bharat.Bhushan@freescale.com>,
	Bharat Bhushan <bharat.bhushan@freescale.com>
Subject: [PATCH] powerpc: export debug register save function for KVM
Date: Tue, 7 May 2013 15:10:50 +0530	[thread overview]
Message-ID: <1367919653-30414-4-git-send-email-Bharat.Bhushan@freescale.com> (raw)
In-Reply-To: <1367919653-30414-1-git-send-email-Bharat.Bhushan@freescale.com>

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>
---
 arch/powerpc/include/asm/switch_to.h |    4 ++++
 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 ca89375..a938138 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(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)
-- 
1.5.6.5



WARNING: multiple messages have this Message-ID (diff)
From: Bharat Bhushan <r65777@freescale.com>
To: kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, agraf@suse.de,
	scottwood@freescale.com, tiejun.chen@windriver.com
Cc: Bharat Bhushan <Bharat.Bhushan@freescale.com>,
	Bharat Bhushan <bharat.bhushan@freescale.com>
Subject: [PATCH] powerpc: export debug register save function for KVM
Date: Tue, 07 May 2013 09:52:50 +0000	[thread overview]
Message-ID: <1367919653-30414-4-git-send-email-Bharat.Bhushan@freescale.com> (raw)
In-Reply-To: <1367919653-30414-1-git-send-email-Bharat.Bhushan@freescale.com>

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>
---
 arch/powerpc/include/asm/switch_to.h |    4 ++++
 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 ca89375..a938138 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(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)
-- 
1.5.6.5



  parent reply	other threads:[~2013-05-07  9:38 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-07  9:40 [PATCH v4] KVM :PPC: Userspace Debug support Bharat Bhushan
2013-05-07  9:52 ` Bharat Bhushan
2013-05-07  9:40 ` [PATCH] powerpc: remove unnecessary line continuations Bharat Bhushan
2013-05-07  9:52   ` Bharat Bhushan
2013-05-07  9:40 ` [PATCH] powerpc: move debug registers in a structure Bharat Bhushan
2013-05-07  9:52   ` Bharat Bhushan
2013-05-07  9:40 ` Bharat Bhushan [this message]
2013-05-07  9:52   ` [PATCH] powerpc: export debug register save function for KVM Bharat Bhushan
2013-05-10  9:15   ` Alexander Graf
2013-05-10  9:15     ` Alexander Graf
2013-05-07  9:40 ` [PATCH] KVM: PPC: exit to user space on "ehpriv" instruction Bharat Bhushan
2013-05-07  9:52   ` Bharat Bhushan
2013-05-07  9:40 ` [PATCH] KVM: PPC: Using "struct debug_reg" Bharat Bhushan
2013-05-07  9:52   ` Bharat Bhushan
2013-05-07  9:40 ` [PATCH] KVM: PPC: Add userspace debug stub support Bharat Bhushan
2013-05-07  9:52   ` Bharat Bhushan
2013-05-10 10:18   ` Alexander Graf
2013-05-10 10:18     ` Alexander Graf
2013-05-10 17:31     ` Bhushan Bharat-R65777
2013-05-10 17:31       ` Bhushan Bharat-R65777
2013-05-10 17:44       ` Alexander Graf
2013-05-10 17:44         ` Alexander Graf
2013-05-11 10:24         ` Bhushan Bharat-R65777
2013-05-11 10:24           ` Bhushan Bharat-R65777
2013-05-11 13:18           ` Alexander Graf
2013-05-11 13:18             ` Alexander Graf
2013-05-13 14:33             ` Scott Wood
2013-05-13 14:33               ` Scott Wood

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