From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Willow Schlanger <wschlanger-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: A small fix
Date: Wed, 27 Jun 2007 17:36:05 -0400 [thread overview]
Message-ID: <4682D845.3030804@qumranet.com> (raw)
In-Reply-To: <46808139.8040008-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Willow Schlanger wrote:
> Hi, in vmx_vcpu_setup() is this code:
>
> vmcs_writel(GUEST_IDTR_BASE, 0);
> vmcs_write32(GUEST_IDTR_LIMIT, 0xffff);
>
> But if you use SIDT on a real processor, after boot-up, you will see the
> real-mode base is in fact 0, but the limit is 0x3ff. That is, in fact,
> the base an limit you are supposed to use when you switch back to real
> mode from protected mode.
>
> So 0xffff should be changed to 0x03ff in the lines above.
>
>
Makes sense. Care to prepare (and test!) a patch?
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prev parent reply other threads:[~2007-06-27 21:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-26 3:00 A small fix Willow Schlanger
[not found] ` <46808139.8040008-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2007-06-27 21:36 ` Avi Kivity [this message]
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