Alexander Graf [off-list ref] wrote:

On 04.07.2013, at 08:57, Bharat Bhushan wrote:

quoted

KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.

Signed-off-by: Bharat Bhushan <redacted>

Ben / Michael, please ack.

It's not really my area of expertise, but it applies and compiles for me
and it's relatively simple, so FWIW...

Acked-by: Michael Neuling <redacted>

Alex

quoted

---
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


--
To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html