Re:Re: [Xen-devel] can dom0 modify Shadow PT of HVM domU?

["Wu Bingzheng" <wubingzheng@xxxxxxx>]

Thanks very much. I will try that.

Wu


email:wubingzheng@xxxxxxx在2009-08-26，"Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> 写道：
>On 26/08/2009 11:30, "Wu Bingzheng" <wubingzheng@xxxxxxx> wrote:
>
>>> I see.  That seems like a pretty convoluted way of doing it.  Why don't
>>> you just inject #GP (or whatever) straight into the guest from your dom0
>>> hypercall?
>> 
>> I think vmx_inject_hw_exception() can't be called under dom0's context,
>> because it calls __vmread() to read VMCS.
>
>You can do vmx_vmcs_enter(v) at the very start of the function (before any
>vmread or vmwrite) and vmx_vmcs_exit(v) at the very end. If you make this
>change then it will be safe to call the function from dom0.
>
> -- Keir
>
>
>
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