Re: [Xen-devel] [PATCH] x86/xen: Fix 32-bit PV guests's usage of kernel_stack

From: Jan Beulich
Date: Wed Apr 09 2014 - 11:40:47 EST


>>> On 09.04.14 at 17:38, <boris.ostrovsky@xxxxxxxxxx> wrote:
> On 04/09/2014 11:01 AM, Jan Beulich wrote:
>>>>> On 09.04.14 at 16:41, <andrew.cooper3@xxxxxxxxxx> wrote:
>>> The latter load however can easy fault; The arguments for %ds in
>>> XSA-42/ CVE-2013-0228 applies to %{e,f,g}s as well.
>> And it was only that latter operation that I pointed at.
>
> We don't seem to reference %fs after the pop so doing the fixup (as
> David suggested) should be enough?

Of course.

Jan

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/