linux-kernel - Re: [Xen-devel] [PATCH] xen: privcmd: schedule() after private hypercall when non CONFIG

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Message-ID: <547C4A7E.6020207@citrix.com>
Date:	Mon, 1 Dec 2014 11:01:18 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Juergen Gross <jgross@...e.com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	"Luis R. Rodriguez" <mcgrof@...e.com>
CC:	<x86@...nel.org>, <kvm@...r.kernel.org>,
	"Luis R. Rodriguez" <mcgrof@...not-panic.com>,
	<linux-kernel@...r.kernel.org>, Davidlohr Bueso <dbueso@...e.de>,
	Joerg Roedel <jroedel@...e.de>,
	Jan Beulich <JBeulich@...e.com>,
	<xen-devel@...ts.xenproject.org>, <boris.ostrovsky@...cle.com>,
	Borislav Petkov <bp@...e.de>, Olaf Hering <ohering@...e.de>
Subject: Re: [Xen-devel] [PATCH] xen: privcmd: schedule() after private hypercall
 when	non CONFIG_PREEMPT

On 28/11/14 04:49, Juergen Gross wrote:
> On 11/27/2014 07:50 PM, Andrew Cooper wrote:
>> 
>> XenServer uses
>>
>> https://github.com/xenserver/linux-3.x.pg/blob/master/master/0001-x86-xen-allow-privcmd-hypercalls-to-be-preempted.patch
>>
>>
>> to deal with these issues.  That patch is based on 3.10.
> 
> Clever. :-)
> 
>>
>> I can remember whether this has been submitted upstream before (and
>> there were outstanding issues), or whether it fell at an inconvenient
>> time with our development cycles.
> 
> I found
> 
> http://lists.xen.org/archives/html/xen-devel/2014-02/msg02540.html
> 
> and nothing else.

I dropped it because it copy-and-paste a bunch of otherwise generic x86
assembler and looked unlikely to get an x86 maintainer ack.  If you
think otherwise, feel free to pick it up and run with it.

David
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