From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: qemu-kvm: require 4K aligned resource size for memory
Date: Thu, 22 Oct 2009 14:37:39 -0200
Message-ID: <20091022163739.GA4353@amt.cnet>
References: <20091020171508.GD13378@redhat.com>
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Cc: Chris Wright <chrisw@redhat.com>, Avi Kivity <avi@redhat.com>,
	Dor Laor <dlaor@redhat.com>, kvm@vger.kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
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On Tue, Oct 20, 2009 at 07:15:09PM +0200, Michael S. Tsirkin wrote:
> KVM does not virtualize low address bits for memory accesses, so we must
> require that PCI BAR size is a multiple of 4K for passthrough to work
> (this also guarantees that address is 4K aligned).
> 
> Users of recent linux kernels can force resource size up to 4K
> using:
> 
> 	commit 32a9a682bef2f6fce7026bd94d1ce20028b0e52d
> 	Author: Yuji Shimada <shimada-yxb@necst.nec.co.jp>
> 	Date:   Mon Mar 16 17:13:39 2009 +0900
> 	PCI: allow assignment of memory resources with a specified alignment
> 
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Applied, thanks.