linux-kernel - RE: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context

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Message-ID: <524a403348d240a8b24db0177e7aaecd@SN2PR03MB061.namprd03.prod.outlook.com>
Date:	Fri, 1 Mar 2013 15:15:58 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:	Jiri Kosina <jkosina@...e.cz>, "olaf@...fle.de" <olaf@...fle.de>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"James.Bottomley@...senPartnership.com" 
	<James.Bottomley@...senPartnership.com>,
	"apw@...onical.com" <apw@...onical.com>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"davem@...emloft.net" <davem@...emloft.net>
Subject: RE: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context



> -----Original Message-----
> From: gregkh@...uxfoundation.org [mailto:gregkh@...uxfoundation.org]
> Sent: Thursday, January 24, 2013 12:18 PM
> To: KY Srinivasan
> Cc: Jiri Kosina; olaf@...fle.de; jasowang@...hat.com; linux-
> kernel@...r.kernel.org; James.Bottomley@...senPartnership.com;
> apw@...onical.com; devel@...uxdriverproject.org; davem@...emloft.net
> Subject: Re: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context
> 
> On Thu, Jan 24, 2013 at 05:06:27PM +0000, KY Srinivasan wrote:
> >
> >
> > > -----Original Message-----
> > > From: Jiri Kosina [mailto:jkosina@...e.cz]
> > > Sent: Thursday, January 24, 2013 5:10 AM
> > > To: KY Srinivasan
> > > Cc: gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org;
> > > devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
> > > jasowang@...hat.com; davem@...emloft.net;
> > > James.Bottomley@...senPartnership.com
> > > Subject: Re: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context
> > >
> > > On Wed, 23 Jan 2013, K. Y. Srinivasan wrote:
> > >
> > > > Execute the shutdown code in a thread context. With recent changes made
> to
> > > the
> > > > shutdown code, shutdown code cannot be invoked from an interrupt
> context.
> > > >
> > > > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > > > Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > > > ---
> > > >  drivers/hv/hv_util.c |   12 +++++++++++-
> > > >  1 files changed, 11 insertions(+), 1 deletions(-)
> > > >
> > > > diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
> > > > index 8b7868a..aceb67f 100644
> > > > --- a/drivers/hv/hv_util.c
> > > > +++ b/drivers/hv/hv_util.c
> > > > @@ -49,6 +49,16 @@ static struct hv_util_service util_kvp = {
> > > >  	.util_deinit = hv_kvp_deinit,
> > > >  };
> > > >
> > > > +static void perform_shutdown(struct work_struct *dummy)
> > > > +{
> > > > +		orderly_poweroff(true);
> > > > +}
> > >
> > > Is there any particular reason for this kind of crazy indentation?
> > I don't know how this extra tab crept through! Greg, if you want I can resend
> > this patch minus the extra tab. Let me know.
> 
> I'll edit it by hand, but someone owes me a beer for it...  :)

Greg,

You have already applied this. There has been some customer request for getting this
patch into 3.7 (3.7 is where the Hyper-V shutdown code ceased to work because of 
some other patches unrelated to Hyper-V that went in). What is the process for requesting
that this patch be applied all the way back to 3.7.

Regards,

K. Y
> 
> greg k-h
> 


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