 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in tools
| To: | Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in toolstack (xl + xm) |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Tue, 16 Nov 2010 07:40:35 +0000 |
| Cc: | Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, bruce.edge@xxxxxxxxx, gianni.tedesco@xxxxxxxxxx, stefano.stabellini@xxxxxxxxxxxxx |
| Delivery-date: | Mon, 15 Nov 2010 23:42:37 -0800 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:user-agent:date :subject:from:to:cc:message-id:thread-topic:thread-index:in-reply-to :mime-version:content-type:content-transfer-encoding; bh=Da0JvNmqYOXvwcWaVMjZEVEP5TQVphgjmZFyCFe4+bI=; b=rIRTkTt73DcWYDV0PPtIE8H4v364XkEUwBvlk/bR9F3nl4KR7X1fH1WLy9U23xsNXG SONUsJn0WZsub9NzpT7OdaO1+/QoabBy3S4ID65UECRA97Exz5D5np5FkwYiZnpYD7MQ vLke2SawYnWFqV1bEeLzqEDriZZuStoezpM+k= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:user-agent:date:subject:from:to:cc:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=F1n/GgNtHpNgdAxYcIquYYviOoHLGMYd5PqK8SRnfLag/FvvjK9lDGDuoC72LP/09e legIl1agFt0sxJU02BBq/ui7VeJ4QKHJxBU4zNT59Bws5Q4mESwieJz/C4JvOlJXl9KK NlmB76OvC/Y9Es1RdFiD3Ptg+nfOG77Z2/2+Q= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <20101115231133.GA12364@xxxxxxxxxxxx> |
| 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: | AcuFYY3yh5vFIQocrUep7ZSANrt60A== |
| Thread-topic: | [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in toolstack (xl + xm) |
| User-agent: | Microsoft-Entourage/12.27.0.100910 |
On 15/11/2010 23:11, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> wrote: >> Well, I don't know. It sounds pretty sensible to me. :-) >> >> Certain virtualisation feature sdisappearing after a save/restore/migrate -- >> or worsse, becoming unreliable -- would be a bit sad. > > So having the option of the PCI hole being passed through, and giving > the tools the value (pci_hole) would mean we could migrate an SR-IOV type > device from one machine to another. Constructing the PCI hole using the > XENMEM_machine_memory_map could generate different E820 for the two guests, > which > would be indeed a bit sad. SR-IOV is a nice example, but even assuming the user does not have pass-thru devices attached during migrate, or save/restore, it would still be nice if they could have the pci-hotplug-passthru facility available to them fully working both before and after such an event. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| Previous by Date: | [Xen-devel] pv drivers on ubuntu 10.04, 牛立新 |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH] linux-2.6.18/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore, Keir Fraser |
| Previous by Thread: | Re: [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in toolstack (xl + xm), Ian Campbell |
| Next by Thread: | Re: [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in toolstack (xl + xm), Jeremy Fitzhardinge |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
