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RE: [Xen-devel] [PATCH]xend: passthrough: do not check non-page-aligned

To: Tom Rotenberg <tom.rotenberg@xxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH]xend: passthrough: do not check non-page-aligned MMIO BAR if not strict-check
From: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>
Date: Fri, 16 Oct 2009 00:00:54 +0800
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Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] [PATCH]xend: passthrough: do not check non-page-aligned MMIO BAR if not strict-check
Yes, because by default we try to prevent potential security issue.

Thanks,
-- Dexuan



-----Original Message-----
From: Tom Rotenberg [mailto:tom.rotenberg@xxxxxxxxx] 
Sent: 2009?10?15? 23:57
To: Cui, Dexuan
Cc: Keir Fraser; xen-devel@xxxxxxxxxxxxxxxxxxx; Kay, Allen M
Subject: Re: [Xen-devel] [PATCH]xend: passthrough: do not check 
non-page-aligned MMIO BAR if not strict-check

Will the default setting be to check the alignment?

On Thu, Oct 15, 2009 at 5:54 PM, Cui, Dexuan <dexuan.cui@xxxxxxxxx> wrote:
> When the option pci-passthrough-strict-check of /etc/xen/xend-config.sxp is
> set to 'no', we don't check the non-page-aligned MMIO BAR.
> This could be useful in some cases, e.g., when there is only 1 device in the
> range of the page and we try to assign the device to pv guest.
>
> Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>
>

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