linux-kernel - Re: kvm vmx shadow paging question

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Message-ID: <6780347b-9fe8-4d67-8046-3a28a5889e42@nextfour.com>
Date:	Sat, 13 Aug 2016 18:47:49 +0300
From:	Mika Penttilä <mika.penttila@...tfour.com>
To:	<kvm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: kvm vmx shadow paging question

On 13.08.2016 17:38, Mika Penttilä wrote:

> Hi,
>
> While studying the vmx code, and the shadow page tables usage (no ept involved),
> I wondered the GUEST_CR3 usage. If no ept, GUEST_CR3 points to the shadow tables.
> But the format of sptes is always 64 bit. How is that with 32 bit hosts, is the GUEST_CR3
> similar to EPT format, 4 level 64 bit always or how is this working on 32 bit?
>
> Thanks,
> Mika
>
Hmm seems non PAE 32 bit host without ept enabled is not supported combination, right ?

--Mika