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Re: [Xen-ia64-devel] [Xen-devel] Call hypercall straightly from user spa
| To: | Tristan Gingold <tgingold@xxxxxxx>, "Xu, Anthony" <anthony.xu@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-ia64-devel] [Xen-devel] Call hypercall straightly from user space |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Sat, 30 Dec 2006 15:58:08 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Sat, 30 Dec 2006 07:57:57 -0800 |
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| In-reply-to: | <20061230152238.GA16203@saphi> |
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| Thread-topic: | [Xen-ia64-devel] [Xen-devel] Call hypercall straightly from user space |
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On 30/12/06 3:22 pm, "Tristan Gingold" <tgingold@xxxxxxx> wrote: >> As you mention before, we may call hypercall straightly from user space >> rather than bouncing through guest kernel. > Hi, > > I haven't found the reference, but how security is addressed ? How to prevent > a user process from making such hypercalls ? It would have to be enabled on a per-process basis by the guest kernel, presumably during context switch. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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