| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] Re: [PATCH RFC 09/12] xen/pvticketlock: Xen implementation f
|
To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
|
Subject: |
[Xen-devel] Re: [PATCH RFC 09/12] xen/pvticketlock: Xen implementation for PV ticket locks |
|
From: |
Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx> |
|
Date: |
Sun, 26 Sep 2010 17:09:10 +0530 |
|
Cc: |
Nick Piggin <npiggin@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>, suzuki@xxxxxxxxxx, Avi Kivity <avi@xxxxxxxxxx> |
|
Delivery-date: |
Mon, 27 Sep 2010 04:56:58 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<32e63cc978ec4b3f36c7f641ce48b3d86aed22ed.1279328276.git.jeremy.fitzhardinge@xxxxxxxxxx> |
|
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: |
<cover.1279328276.git.jeremy.fitzhardinge@xxxxxxxxxx> <32e63cc978ec4b3f36c7f641ce48b3d86aed22ed.1279328276.git.jeremy.fitzhardinge@xxxxxxxxxx> |
|
Reply-to: |
vatsa@xxxxxxxxxxxxxxxxxx |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Fri, Jul 16, 2010 at 06:03:04PM -0700, Jeremy Fitzhardinge wrote:
> Replace the old Xen implementation of PV spinlocks with and implementation
> of xen_lock_spinning and xen_unlock_kick.
I see that the old implementation took care of a spinlock() call being
interrupted by another spinlock (in interrupt handler), by saving/restoring
old lock of interest. We don't seem to be doing that in this new version?
Won't that lead to loss of wakeup -> hang?
Also are you planning to push this series into mainline sometime soon?
- vatsa
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread>
|
- [Xen-devel] Re: [PATCH RFC 09/12] xen/pvticketlock: Xen implementation for PV ticket locks,
Srivatsa Vaddagiri <=
|
|
|
| |
|
Home