linux-kernel - RE: [PATCH V2 1/7] Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer

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Date:	Tue, 10 Mar 2015 18:20:29 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	"apw@...onical.com" <apw@...onical.com>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V2 1/7] Drivers: hv: vmbus: Export the
 vmbus_sendpacket_pagebuffer_ctl()



> -----Original Message-----
> From: Greg KH [mailto:gregkh@...uxfoundation.org]
> Sent: Tuesday, March 10, 2015 8:15 AM
> To: KY Srinivasan
> Cc: apw@...onical.com; devel@...uxdriverproject.org; olaf@...fle.de;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH V2 1/7] Drivers: hv: vmbus: Export the
> vmbus_sendpacket_pagebuffer_ctl()
> 
> On Tue, Mar 10, 2015 at 03:05:26PM +0000, KY Srinivasan wrote:
> >
> >
> > > -----Original Message-----
> > > From: Greg KH [mailto:gregkh@...uxfoundation.org]
> > > Sent: Tuesday, March 10, 2015 12:42 AM
> > > To: KY Srinivasan
> > > Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org;
> > > olaf@...fle.de; apw@...onical.com; vkuznets@...hat.com
> > > Subject: Re: [PATCH V2 1/7] Drivers: hv: vmbus: Export the
> > > vmbus_sendpacket_pagebuffer_ctl()
> > >
> > > On Fri, Mar 06, 2015 at 11:04:28PM -0800, K. Y. Srinivasan wrote:
> > > > Export the vmbus_sendpacket_pagebuffer_ctl() interface.
> > >
> > > Why?  Nothing in this patch needs it.  Please include this in the
> > > patch that needs the symbol, or at least give a hint as to what is going on.
> > >
> > > As it is, this just looks like a random export for no reason at all
> > > :(
> >
> > This will be used by Hyper-V networking driver to optimize signaling
> > on the send path. I wanted these patches committed before I sent the
> > networking patch to David Miller. I implemented the two vmbus APIs for
> sending messages:
> > 1) vmbus_sendpacket_ctl()
> > 2) vmbus_sendpacket_pagebuffer_ctl()
> >
> > and I forgot to export the second form of the send API in an earlier
> > patch-set that you have already  committed. I need both to be exported
> > to for the netvsc patch I have.
> 
> Then just send it as part of the netvsc patches please.

Done.
> 
> > On a different note, upstream Linux is currently broken on Hyper-V and
> > a patch in this set Fixes it:
> > 0002-Drivers-hv-vmbus-Perform-device-register-in-the-per-.patch
> 
> That should have been pointed out somewhere :)
> 
> > Do you want me to resend this set?
> 
> Yes, please do.  Break it up into two different sets, one for 4.0-final, and one
> for 4.1-rc1.

The upstream issue I noted is only on linux-next being queued up for 4.1-rc1. I will just resubmit
the patch-set for your  char-misc tree.

Thanks,

K. Y
> 
> thanks,
> 
> greg k-h
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