linux-kernel - Re: [PATCH v3 [resend] 14/18] smp, x86, xen: kill SMP single function call interrupt

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Date:	Mon, 16 Dec 2013 11:33:34 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	"Liu, Jinsong" <jinsong.liu@...el.com>
Cc:	Jiang Liu <liuj97@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Shaohua Li <shli@...nel.org>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Jiri Kosina <trivial@...nel.org>,
	Wang YanQing <udknight@...il.com>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH v3 [resend] 14/18] smp, x86, xen: kill SMP single
 function call interrupt

On Mon, Dec 16, 2013 at 04:24:41AM +0000, Liu, Jinsong wrote:
> Konrad Rzeszutek Wilk wrote:
> > On Mon, Dec 16, 2013 at 12:36:36AM +0800, Jiang Liu wrote:
> >> Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
> >> similar to smp_call_function_single()" has unified the way to handle
> >> single and multiple cross-CPU function calls. Now only one interrupt
> >> is needed for architecture specific code to support generic SMP
> >> function 
> >> call interfaces, so kill the redundant single function call
> >> interrupt. 
> >> 
> >> Cc: Andrew Morton <akpm@...ux-foundation.org>
> >> Cc: Shaohua Li <shli@...nel.org>
> >> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> >> Cc: Ingo Molnar <mingo@...e.hu>
> >> Cc: Steven Rostedt <rostedt@...dmis.org>
> >> Cc: Jiri Kosina <trivial@...nel.org>
> >> Cc: Thomas Gleixner <tglx@...utronix.de>
> >> Cc: "H. Peter Anvin" <hpa@...or.com>
> >> Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> > 
> > I presume this has been tested?
> > 
> 
> I have just test Jiang's patch, it works fine for dom0 booting.

Excellent! Please add Acked-by from me.

Thanks!

> 
> Thanks,
> Jinsong
> 
> 
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