Xen devel - Jan 2010 - [PATCH] Update guest rtc upon resume from S3

Upon resuming a guest after a host S3 resume, guest time is incorrect.  Attached
patch should fix that issue.

Signed-off-by: Kamala Narasimhan <kamala.narasimhan@citrix.com>

Kamala


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This is a host S3 issue rather than a guest S3 issue, isn''t it? By
which I
mean, guest RTCs are not kept up to date across host S3 (obviously), but
they are kept up to date all the while the host is actually running (even if
a guest is in virtual S3 state).

So perhaps this properly belongs in the host S3 resume path. What do you
think?

 -- Keir

On 28/01/2010 19:30, "Kamala Narasimhan"
<Kamala.Narasimhan@citrix.com>
wrote:
> Upon resuming a guest after a host S3 resume, guest time is incorrect.
> Attached patch should fix that issue.
> 
> Signed-off-by: Kamala Narasimhan <kamala.narasimhan@citrix.com>
> 
> Kamala


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Yes, I have observed this only after host S3 resume.  I have attached a revised
patch that is invoked during host resume.  Please consider this or tweak it as
necessary.

Signed-off-by: Kamala Narasimhan <kamala.narasimhan@citrix.com>

Kamala
 
> -----Original Message-----
> From: Keir Fraser
> Sent: Friday, January 29, 2010 2:23 AM
> To: Kamala Narasimhan; xen-devel@lists.xensource.com
> Subject: Re: [xen-devel][PATCH] Update guest rtc upon resume from S3
> 
> This is a host S3 issue rather than a guest S3 issue, isn''t it? By
> which I
> mean, guest RTCs are not kept up to date across host S3 (obviously),
> but
> they are kept up to date all the while the host is actually running
> (even if
> a guest is in virtual S3 state).
> 
> So perhaps this properly belongs in the host S3 resume path. What do
> you
> think?
> 
>  -- Keir
> 
> On 28/01/2010 19:30, "Kamala Narasimhan"
<Kamala.Narasimhan@citrix.com>
> wrote:
> 
> > Upon resuming a guest after a host S3 resume, guest time is incorrect.
> > Attached patch should fix that issue.
> >
> > Signed-off-by: Kamala Narasimhan <kamala.narasimhan@citrix.com>
> >
> > Kamala
> 


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