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Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest.

To: "Dan Gora" <dan.gora@xxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Tue, 16 Mar 2010 15:54:34 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 16 Mar 2010 08:55:08 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

>>> Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 16.03.10 16:20 >>>
>The Hypervisor gets "trapped" when an outb is made (look for
>emulate_privileged_op function and specifically out).

No, that's only the path taken for pv guests. HVM guests use special
exit events for trapping I/O instructions.

Jan


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References:
- [Xen-devel] PCI BAR register space written with garbage in HVM guest.
  - From: Dan Gora
- Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest.
  - From: Konrad Rzeszutek Wilk
- Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest.
  - From: Dan Gora
- Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest.
  - From: Konrad Rzeszutek Wilk

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