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Re: [Xen-ia64-devel] [Xen-devel] Call hypercall straightly from user space

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

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