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Re: [Xen-ia64-devel] VTi: io emulation when vpsr.ic=0

from [Tristan Gingold]

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To:	Tristan Gingold <tgingold@xxxxxxx>
Subject:	Re: [Xen-ia64-devel] VTi: io emulation when vpsr.ic=0
From:	Tristan Gingold <tgingold@xxxxxxx>
Date:	Thu, 22 Feb 2007 06:27:56 +0100
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On Sat, Feb 17, 2007 at 03:51:35AM +0100, Tristan Gingold wrote:
> Hi,
> 
> one more VTi question:
> nested_dtlb_miss is defined as:
> ENTRY(vmx_nested_dtlb_miss)
>     VMX_DBG_FAULT(5)
>     VMX_FAULT(5)
> END(vmx_nested_dtlb_miss)
> 
> that is a nested dtlb miss is reflected to the domain.
> That also means that IO accesses are *not* allowed when vpsr.ic = 0.  Right ?
> That also means that this fault can be reflected when the vcpu is in
> (meta)physical mode, doesn't it ?
Oops, this is a dummy question.  The reply is this interruption is never
called in vmm mode because psr.ic is never 0.  I was confused by VMX_FAULT
which tests the mode.

Tristan.

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