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Re: [Xen-devel] 2.6.37 PV on HVM issues

from [Ian Campbell] [Permanent Link][Original]
To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] 2.6.37 PV on HVM issues
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Fri, 3 Dec 2010 11:24:43 +0000
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Alex Bligh <alex@xxxxxxxxxxx>
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On Fri, 2010-12-03 at 11:18 +0000, Stefano Stabellini wrote:
> 
> If you know what you are doing you can manually remove the check for
> the unplug protocol in the kernel, just hack
> arch/x86/xen/platform-pci-unplug.c:check_platform_magic. 

This is exactly equivalent to adding "xen_emul_unplug=unnecessary" to
the kernel command line, isn't it?

Conversely if you want to always force emulated devices (i.e. disable
any attempt to unplug) then "xen_emul_unplug=never" will do what you
want.

Ian.


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