linux-kernel - Re: [PATCH v6 2/4] x86/ldt: Make modify

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Message-ID: <CALCETrWPn3WJxQHmGVHAHK95G_N5c=2tmD6JzD9maPYycTwZdQ@mail.gmail.com>
Date:	Thu, 30 Jul 2015 20:15:44 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Andrew Cooper <andrew.cooper3@...rix.com>
Cc:	Andy Lutomirski <luto@...nel.org>, X86 ML <x86@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"security@...nel.org" <security@...nel.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Jan Beulich <jbeulich@...e.com>,
	xen-devel <xen-devel@...ts.xen.org>,
	stable <stable@...r.kernel.org>
Subject: Re: [PATCH v6 2/4] x86/ldt: Make modify_ldt synchronous

On Thu, Jul 30, 2015 at 3:50 PM, Andrew Cooper
<andrew.cooper3@...rix.com> wrote:
> On 30/07/2015 22:31, Andy Lutomirski wrote:
>> Note to -stable maintainers: by itself, this patch makes a
>> pre-existing Xen bug much easier to trigger; on a 32-bit Xen guest,
>> the new ldt_gdt selftest is likely to OOPS.  Even without this
>> patch, the test can OOPS, but it's much less likely to happen.  The
>> Xen maintainers should have a fix for that issue shortly.
>
> All Xen issues should be fixed by patch 1 now.
>

Whoops, right.  That paragraph in the changelog can be deleted.

> ~Andrew



-- 
Andy Lutomirski
AMA Capital Management, LLC
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