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Re: [Xen-devel] [PATCH 6/6] Change MMU_PT_UPDATE_RESERVE_AD to support u
| To: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 6/6] Change MMU_PT_UPDATE_RESERVE_AD to support update page table for foreign domain |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 01 Jun 2009 10:45:09 +0100 |
| Cc: | Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Mon, 01 Jun 2009 02:45:44 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH 6/6] Change MMU_PT_UPDATE_RESERVE_AD to support update page table for foreign domain |
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On 01/06/2009 10:35, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote: > I think I missed this logic, I just make sure the domain is suspended, but > seems be wrong because a suspended domain can still be killed and relinquish > resources. So I will add this logic and resend the patch. > > But I'm not sure if we need make sure the guest is suspended/paused during > these functions, as exchange a page or pte in flight may cause trouble. Or we > can leave it to user space tools, since this situation will not damage xen HV > itself. The HV should not bother to do the suspend check. It is a higher-level problem which should be checked by the tools. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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