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Re: [Xen-devel] [RFO] Action when bad address passed in hypercall by gue
| To: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [RFO] Action when bad address passed in hypercall by guest |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 19 Mar 2009 17:07:34 +0000 |
| Cc: | |
| Delivery-date: | Thu, 19 Mar 2009 10:09:00 -0700 |
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| Thread-topic: | [Xen-devel] [RFO] Action when bad address passed in hypercall by guest |
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On 19/03/2009 17:01, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote: > hat is the appropriate action if the gfn is "bad" (specifically > fails the p2m_ram_rw test from gfn_to_mfn)? > > A) Ignore it (but return an error from the hypercall) > B) __domain_crash() as the guest is surely broken or malicious Probably return an error to the caller. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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