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[Xen-devel] [PATCH]xend: passthrough: loosen the pci co-assignment for p
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]xend: passthrough: loosen the pci co-assignment for pv guest |
| From: | "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> |
| Date: | Fri, 31 Jul 2009 22:09:19 +0800 |
| Accept-language: | zh-CN, en-US |
| Acceptlanguage: | zh-CN, en-US |
| Cc: | |
| Delivery-date: | Fri, 31 Jul 2009 07:10:05 -0700 |
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| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcoR6H7/aSfUYVVQQ+yzuNHhEFFcDw== |
| Thread-topic: | [PATCH]xend: passthrough: loosen the pci co-assignment for pv guest |
In current xend, we can not assign co-assignment devices to different guests, even for pv guests. This patch loosens the policy for pv guest: if none of the co-assignment devices have been assigned to hvm guest, we can assign the devices to different pv guests. The patch also adds a detection: if a device has been assigned to guest, we can't try to "xm pci-attach" it to the same guest again. Thanks, -- Dexuan
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