| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
RE: [Xen-devel] Re: [PATCH] Fix cpu offline bug
|
To: |
Jan Beulich <JBeulich@xxxxxxxxxx>, Keir Fraser <keir.xen@xxxxxxxxx> |
|
Subject: |
RE: [Xen-devel] Re: [PATCH] Fix cpu offline bug |
|
From: |
"Liu, Jinsong" <jinsong.liu@xxxxxxxxx> |
|
Date: |
Tue, 8 Mar 2011 17:47:32 +0800 |
|
Accept-language: |
en-US |
|
Acceptlanguage: |
en-US |
|
Cc: |
"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Li, Xin" <xin.li@xxxxxxxxx>, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> |
|
Delivery-date: |
Tue, 08 Mar 2011 01:49:22 -0800 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<4D75FC5702000078000351B2@xxxxxxxxxxxxxxxxxx> |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
References: |
<BC00F5384FCFC9499AF06F92E8B78A9E1FA4F5A806@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <C9967421.14234%keir.xen@xxxxxxxxx> <4D75FC5702000078000351B2@xxxxxxxxxxxxxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
Thread-index: |
AcvdbnntbVow+AFoRG24ua2xh2k4SgABtfOA |
|
Thread-topic: |
[Xen-devel] Re: [PATCH] Fix cpu offline bug |
Jan, I'm not quite clear your meaning.
Why and where need to insert barrier, or volatile cpu_state?
Thanks,
Jinsong
Jan Beulich wrote:
>>>> On 05.03.11, Keir Fraser <keir.xen@xxxxxxxxx> wrote: Urk, good
>>>> point!
>
> But your fix still allows what the comment says it is supposed to
> avoid - simply introducing a variable doesn't help afaict, you also
> need to insert a barrier() to avoid a second read (or "cpu_state"
> would need to be volatile).
>
> Jan
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home