From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: [Xen-devel] [PATCH] xen: privcmd: schedule() after private hypercall
 when	non CONFIG_PREEMPT
Date: Mon, 1 Dec 2014 11:01:18 +0000
Message-ID: <547C4A7E.6020207@citrix.com>
References: <1417040805-15857-1-git-send-email-mcgrof@do-not-panic.com>	<5476C66F.5040308@suse.com> <20141127183616.GV25677@wotan.suse.de> <54777277.5040401@citrix.com> <5477FECF.2060404@suse.com>
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Cc: <x86@kernel.org>, <kvm@vger.kernel.org>,
	"Luis R. Rodriguez" <mcgrof@do-not-panic.com>,
	<linux-kernel@vger.kernel.org>, Davidlohr Bueso <dbueso@suse.de>,
	Joerg Roedel <jroedel@suse.de>,
	Jan Beulich <JBeulich@suse.com>,
	<xen-devel@lists.xenproject.org>, <boris.ostrovsky@oracle.com>,
	Borislav Petkov <bp@suse.de>, Olaf Hering <ohering@suse.de>
To: Juergen Gross <jgross@suse.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	"Luis R. Rodriguez" <mcgrof@suse.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
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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