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Re: [Xen-devel] [PATCH 5/12] VTPM mini-os: mfn_is_ram check disable

To: Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 5/12] VTPM mini-os: mfn_is_ram check disable
From: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Date: Sat, 12 Mar 2011 01:31:57 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Resent-date: Sat, 12 Mar 2011 02:39:48 +0100
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Matthew Fioravante, le Fri 11 Mar 2011 17:48:00 -0500, a écrit :
> Currently when mapping io memory regions into a mini-os domain a check 
> is performed to make sure the memory region really is io memory. While 
> this is a good idea in practice, the code doing the check fails if you 
> have over 4GB since there may be system memory mapped after the io 
> memory mappings.
> 
> This patch disables the check and turns it into a stub. It is required 
> for tpm passthrough to the vtpm manager domain.
> 
> Signed off by: Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>

Acked-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>

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