From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Michael Neuling To: Alexander Graf Subject: Re: [PATCH 1/4 v6] powerpc: export debug registers save function for KVM In-reply-to: <8F1AA8FF-5428-4978-B847-B89A581E1B28@suse.de> References: <1372921067-19678-1-git-send-email-Bharat.Bhushan@freescale.com> <1372921067-19678-2-git-send-email-Bharat.Bhushan@freescale.com> <8F1AA8FF-5428-4978-B847-B89A581E1B28@suse.de> Date: Tue, 30 Jul 2013 12:42:46 +1000 Message-ID: <28333.1375152166@ale.ozlabs.ibm.com> Cc: Stephen Rothwell , "kvm@vger.kernel.org list" , kvm-ppc@vger.kernel.org, Bharat Bhushan , =?windows-1252?Q?=22=93tiejun=2Echen=94_Chen=22?= , Bharat Bhushan , Scott Wood , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Alexander Graf wrote: > > On 04.07.2013, at 08:57, Bharat Bhushan wrote: > > > KVM need this function when switching from vcpu to user-space > > thread. My subsequent patch will use this function. > > > > Signed-off-by: Bharat Bhushan > > 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 > > > Alex > > > --- > > 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 >