From: Keir Fraser <keir.xen@gmail.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH] x86: rework hypercall argument translation area setup
Date: Thu, 21 Feb 2013 13:12:17 +0000 [thread overview]
Message-ID: <CD4BCDB1.4C5E9%keir.xen@gmail.com> (raw)
In-Reply-To: <512629A702000078000BFEBF@nat28.tlf.novell.com>
On 21/02/2013 13:05, "Jan Beulich" <JBeulich@suse.com> wrote:
>>>> On 21.02.13 at 13:57, Keir Fraser <keir.xen@gmail.com> wrote:
>> On 21/02/2013 12:26, "Jan Beulich" <JBeulich@suse.com> wrote:
>>> Are we concerned about the performance of guest GDT/LDT page
>>> (un)mappings?
>>
>> LDT must often change on guest process context switch? So I would think yes
>> we do.
>
> Linux doesn't normally use an LDT (i.e. only exotic processes
> would have one of non-zero size).
That being the case, we probably don't care so much.
-- Keir
> Jan
>
prev parent reply other threads:[~2013-02-21 13:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-21 11:42 [PATCH] x86: rework hypercall argument translation area setup Jan Beulich
2013-02-21 12:08 ` Keir Fraser
2013-02-21 12:26 ` Jan Beulich
2013-02-21 12:57 ` Keir Fraser
2013-02-21 13:05 ` Jan Beulich
2013-02-21 13:12 ` Keir Fraser [this message]
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