diff mbox

[v4] xen/arm: enable PV control for ARM

Message ID 1374529321-12955-1-git-send-email-julien.grall@linaro.org
State Superseded, archived
Headers show

Commit Message

Julien Grall July 22, 2013, 9:42 p.m. UTC
Enable power management from the toolstack for ARM guest.

Signed-off-by: Julien Grall <julien.grall@linaro.org>

---
    Changes in v4:
        - Divide the patch in 2 distinct parts
    Changes in v3:
        - Fix condition to compile cpu_hotplug.o
    Changes in v2:
        - Don't compile xen/cpu_hotplug.o with ARM64
---
 drivers/xen/Makefile |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Konrad Rzeszutek Wilk July 23, 2013, 12:32 a.m. UTC | #1
Julien Grall <julien.grall@linaro.org> wrote:
>Enable power management from the toolstack for ARM guest.
>
>Signed-off-by: Julien Grall <julien.grall@linaro.org>
>
>---
>    Changes in v4:
>        - Divide the patch in 2 distinct parts
>    Changes in v3:
>        - Fix condition to compile cpu_hotplug.o
>    Changes in v2:
>        - Don't compile xen/cpu_hotplug.o with ARM64
>---
> drivers/xen/Makefile |    3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
>diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
>index a609353..f185e8d 100644
>--- a/drivers/xen/Makefile
>+++ b/drivers/xen/Makefile
>@@ -1,9 +1,8 @@
> ifeq ($(filter y, $(CONFIG_ARM) $(CONFIG_ARM64)),)
>-obj-y	+= manage.o
> obj-$(CONFIG_HOTPLUG_CPU)		+= cpu_hotplug.o
> endif
> obj-$(CONFIG_X86)			+= fallback.o
>-obj-y	+= grant-table.o features.o events.o balloon.o time.o
>+obj-y	+= grant-table.o features.o events.o balloon.o time.o manage.o
> obj-y	+= xenbus/
> 
> nostackp := $(call cc-option, -fno-stack-protector)

The patch looks Ok but the description is off.  Power management is the term used for cpu freq,  C states and P states. While this patch touches none of that.
Julien Grall July 23, 2013, 10:52 a.m. UTC | #2
On 07/23/2013 01:32 AM, Konrad Rzeszutek Wilk wrote:
> Julien Grall <julien.grall@linaro.org> wrote:
>> Enable power management from the toolstack for ARM guest.
>>
>> Signed-off-by: Julien Grall <julien.grall@linaro.org>
>>
>> ---
>>    Changes in v4:
>>        - Divide the patch in 2 distinct parts
>>    Changes in v3:
>>        - Fix condition to compile cpu_hotplug.o
>>    Changes in v2:
>>        - Don't compile xen/cpu_hotplug.o with ARM64
>> ---
>> drivers/xen/Makefile |    3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
>> index a609353..f185e8d 100644
>> --- a/drivers/xen/Makefile
>> +++ b/drivers/xen/Makefile
>> @@ -1,9 +1,8 @@
>> ifeq ($(filter y, $(CONFIG_ARM) $(CONFIG_ARM64)),)
>> -obj-y	+= manage.o
>> obj-$(CONFIG_HOTPLUG_CPU)		+= cpu_hotplug.o
>> endif
>> obj-$(CONFIG_X86)			+= fallback.o
>> -obj-y	+= grant-table.o features.o events.o balloon.o time.o
>> +obj-y	+= grant-table.o features.o events.o balloon.o time.o manage.o
>> obj-y	+= xenbus/
>>
>> nostackp := $(call cc-option, -fno-stack-protector)
> 
> The patch looks Ok but the description is off.  Power management is the term used for cpu freq,  C states and P states. While this patch touches none of that. 
> 

What about : "Enable lifecycle (reboot, shutdown) management from the
toolstack for ARM guest"?
Stefano Stabellini July 23, 2013, 11:37 a.m. UTC | #3
On Mon, 22 Jul 2013, Konrad Rzeszutek Wilk wrote:
> Julien Grall <julien.grall@linaro.org> wrote:
> >Enable power management from the toolstack for ARM guest.
> >
> >Signed-off-by: Julien Grall <julien.grall@linaro.org>
> >
> >---
> >    Changes in v4:
> >        - Divide the patch in 2 distinct parts
> >    Changes in v3:
> >        - Fix condition to compile cpu_hotplug.o
> >    Changes in v2:
> >        - Don't compile xen/cpu_hotplug.o with ARM64
> >---
> > drivers/xen/Makefile |    3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> >diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
> >index a609353..f185e8d 100644
> >--- a/drivers/xen/Makefile
> >+++ b/drivers/xen/Makefile
> >@@ -1,9 +1,8 @@
> > ifeq ($(filter y, $(CONFIG_ARM) $(CONFIG_ARM64)),)
> >-obj-y	+= manage.o
> > obj-$(CONFIG_HOTPLUG_CPU)		+= cpu_hotplug.o
> > endif
> > obj-$(CONFIG_X86)			+= fallback.o
> >-obj-y	+= grant-table.o features.o events.o balloon.o time.o
> >+obj-y	+= grant-table.o features.o events.o balloon.o time.o manage.o
> > obj-y	+= xenbus/
> > 
> > nostackp := $(call cc-option, -fno-stack-protector)
> 
> The patch looks Ok but the description is off.  Power management is the term used for cpu freq,  C states and P states. While this patch touches none of that. 
> 

That's a very x86-centric view of the world, but it's true that manage.c
is about shutdown, restart and other operations that don't fit under
"power management".
It could benefit from a better description.
diff mbox

Patch

diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index a609353..f185e8d 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -1,9 +1,8 @@ 
 ifeq ($(filter y, $(CONFIG_ARM) $(CONFIG_ARM64)),)
-obj-y	+= manage.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= cpu_hotplug.o
 endif
 obj-$(CONFIG_X86)			+= fallback.o
-obj-y	+= grant-table.o features.o events.o balloon.o time.o
+obj-y	+= grant-table.o features.o events.o balloon.o time.o manage.o
 obj-y	+= xenbus/
 
 nostackp := $(call cc-option, -fno-stack-protector)