linux-kernel - Re: [PATCH v5 2/2] x86/xen: allow privcmd hypercalls to be preempted on 64-bit

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Date:	Tue, 27 Jan 2015 08:35:18 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	<david.vrabel@...rix.com>,
	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
Cc:	"Andy Lutomirski" <luto@...capital.net>, <rostedt@...dmis.org>,
	"Masami Hiramatsu" <masami.hiramatsu.pt@...achi.com>,
	<x86@...nel.org>, "Thomas Gleixner" <tglx@...utronix.de>,
	<paulmck@...ux.vnet.ibm.com>, <xen-devel@...ts.xenproject.org>,
	<boris.ostrovsky@...cle.com>, <konrad.wilk@...cle.com>,
	"Ingo Molnar" <mingo@...hat.com>,
	"Luis Rodriguez" <Mcgrof@...e.com>, "Borislav Petkov" <bp@...e.de>,
	<kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v5 2/2] x86/xen: allow privcmd hypercalls to be
 preempted on 64-bit

>>> On 27.01.15 at 02:51, <mcgrof@...not-panic.com> wrote:

Even if David told you this would be acceptable, I have to question
an abstract model of fixing issues on only 64-bit kernels - this may
be acceptable for distro purposes, but seems hardly the right
approach for upstream. If 32-bit ones are to become deliberately
broken, the XEN config option should become dependent on !X86_32.

Jan

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