 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying doma
| To: | Kouya Shimura <kouya@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying domain |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Fri, 27 Nov 2009 08:08:39 +0000 |
| Cc: | |
| Delivery-date: | Fri, 27 Nov 2009 00:09:03 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <7kocmoxz9p.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxx> |
| 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> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcpvKhc52UD/OATJR1CLRniS+wBRqAADrw/N |
| Thread-topic: | [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying domain |
| User-agent: | Microsoft-Entourage/12.23.0.091001 |
Since the check is made with no locks held, I don't think any race can be completely avoided here. I'm not sure the performance argument holds much water either -- this just looks like a pointless extra check. -- Keir On 27/11/2009 06:22, "Kouya Shimura" <kouya@xxxxxxxxxxxxxx> wrote: > The race condition should be avoided for efficiency. > > Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx> > _______________________________________________ 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] [PATCH] x86/mm: set_p2m_entry() should return 0 on error, Keir Fraser |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying domain, Kouya Shimura |
| Previous by Thread: | [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying domain, Kouya Shimura |
| Next by Thread: | Re: [Xen-devel] [PATCH] x86/mm: disallow mmu hypercalls for a dying domain, Kouya Shimura |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
