Hibernation on ARM64

Hibernation on ARM64

[Christian S. Perone]

Hello, I haven't found any information, road map or something like
that for the hibernation support for ARM64, does anyone knows if there
is something planned to support this in near future ?

Thanks !

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Hibernation on ARM64

[Lorenzo Pieralisi]

Hi Christian,

On Thu, May 21, 2015 at 07:34:06PM +0100, Christian S. Perone wrote:
> Hello, I haven't found any information, road map or something like
> that for the hibernation support for ARM64, does anyone knows if there
> is something planned to support this in near future ?

Adding arch support for hibernation to arm64 should be fairly simple,
it is not top priority at the moment simply because there are not
compelling use-cases (on the PM side most features revolve around
CPUidle and suspend-to-idle and S2R).

To answer your question, yes I have planned to support it, I just
do not want to add it to the kernel for no particular reason, if there
are compelling requirements (I guess you are asking for a specific
reason) it can be done fairly quickly.

Thanks,
Lorenzo

Hibernation on ARM64

[Chen Baozi]

Hi Lorenzo,

On Fri, May 22, 2015 at 12:02:18PM +0100, Lorenzo Pieralisi wrote:
> Hi Christian,
> 
> On Thu, May 21, 2015 at 07:34:06PM +0100, Christian S. Perone wrote:
> > Hello, I haven't found any information, road map or something like
> > that for the hibernation support for ARM64, does anyone knows if there
> > is something planned to support this in near future ?
> 
> Adding arch support for hibernation to arm64 should be fairly simple,
> it is not top priority at the moment simply because there are not
> compelling use-cases (on the PM side most features revolve around
> CPUidle and suspend-to-idle and S2R).
> 
> To answer your question, yes I have planned to support it, I just
> do not want to add it to the kernel for no particular reason, if there
> are compelling requirements (I guess you are asking for a specific
> reason) it can be done fairly quickly.
> 

I am also looking forward the hibernation support on arm64. Thanks for
the information.

Could you please CCed me the hiberation patches when you send them to
list. I can help test it. :-)

Cheers,

Baozi.

Hibernation on ARM64

[Christian S. Perone]

Thanks for the reply Lorenzo and Chen. I asked because it seems that
someone tried before and failed [1] due to some page faults while
calling copy_page(). I'm also interested in testing the patches.

[1] https://lkml.org/lkml/2015/1/10/120

On Mon, May 25, 2015 at 2:33 AM, Chen Baozi <cbz@baozis.org> wrote:
> Hi Lorenzo,
>
> On Fri, May 22, 2015 at 12:02:18PM +0100, Lorenzo Pieralisi wrote:
>> Hi Christian,
>>
>> On Thu, May 21, 2015 at 07:34:06PM +0100, Christian S. Perone wrote:
>> > Hello, I haven't found any information, road map or something like
>> > that for the hibernation support for ARM64, does anyone knows if there
>> > is something planned to support this in near future ?
>>
>> Adding arch support for hibernation to arm64 should be fairly simple,
>> it is not top priority at the moment simply because there are not
>> compelling use-cases (on the PM side most features revolve around
>> CPUidle and suspend-to-idle and S2R).
>>
>> To answer your question, yes I have planned to support it, I just
>> do not want to add it to the kernel for no particular reason, if there
>> are compelling requirements (I guess you are asking for a specific
>> reason) it can be done fairly quickly.
>>
>
> I am also looking forward the hibernation support on arm64. Thanks for
> the information.
>
> Could you please CCed me the hiberation patches when you send them to
> list. I can help test it. :-)
>
> Cheers,
>
> Baozi.



-- 
Blog | Github | Twitter
"Forgive, O Lord, my little jokes on Thee, and I'll forgive Thy great
big joke on me."