 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] x86's context switch ordering of operations
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] x86's context switch ordering of operations |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 29 Apr 2008 17:52:51 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 29 Apr 2008 09:53:13 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <48175CE8.76E4.0078.0@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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AciqGXX1tFP0FhYMEd2kwQAWy6hiGQ== |
| Thread-topic: | [Xen-devel] x86's context switch ordering of operations |
| User-agent: | Microsoft-Entourage/11.4.0.080122 |
On 29/4/08 16:37, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: > Okay, that could be easily dealt with by doing set_current() explicitly > in the switch-to-idle case, and moving it into __context_switch() in > the other cases. It wouldn't really help you. If you switch to from VCPU A to idle and then to VCPU B, you would still end up calling ctxt_switch_from(A) when current==idle. > Any word on the significance of doing write_ptbase() after calling > ctxt_switch_to()? It probably could be done earlier. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] Vanilla Linux and has_foreign_mapping, Michael Abd-El-Malek |
|---|---|
| Next by Date: | RE: [Xen-devel] [PATCH] get dhcp working for network-nat (Take 2), Dan Magenheimer |
| Previous by Thread: | Re: [Xen-devel] x86's context switch ordering of operations, Jan Beulich |
| Next by Thread: | Re: [Xen-devel] x86's context switch ordering of operations, Jeremy Fitzhardinge |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
