From mboxrd@z Thu Jan  1 00:00:00 1970
From: Razvan Cojocaru <rzvncj@gmail.com>
Subject: Re: Vmx_vmenter_helper() and hvm_inject_page_fault()
Date: Thu, 07 Nov 2013 13:43:47 +0200
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To: Tim Deegan <tim@xen.org>
Cc: xen-devel <xen-devel@lists.xenproject.org>, Jan Beulich <JBeulich@suse.com>
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Hello Tim, thank you for your answer!

> Or, even easier, just leave the EPT state that caused the mem_event in
> the first place -- if the guest retries the instruction it will exit
> again with the same fault and you can have some state in the EPT fault
> handler to say 'next time, inject a pagefault'.

Good suggestion, I'm exploring it as we speak.

But, I would also like to know what the dangers of doing this in the
VMENTRY helper function are. Is it that the VMCS information is not yet
fully there? Is guest_cpu_user_regs() not reliable at that point? What
exactly could go wrong there?

Thanks.