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Re: [Xen-devel] Re: [PATCH 4/5] xen: Fix the memory registration to refl

To: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH 4/5] xen: Fix the memory registration to reflect of what is done by Xen.
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Mon, 18 Jul 2011 12:14:22 +0100
Cc: Alexander Graf <agraf@xxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, QEMU-devel <qemu-devel@xxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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References: <1310740376-13323-1-git-send-email-anthony.perard@xxxxxxxxxx> <1310740376-13323-5-git-send-email-anthony.perard@xxxxxxxxxx> <alpine.DEB.2.00.1107151757410.12963@kaball-desktop> <CAJJyHjLF=aAXENdBTbyC9YGdYTH8tZ=HOXYAavi65EC=vE8sSw@xxxxxxxxxxxxxx>
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On Fri, 15 Jul 2011, Anthony PERARD wrote:
> On Fri, Jul 15, 2011 at 18:05, Stefano Stabellini
> <stefano.stabellini@xxxxxxxxxxxxx> wrote:
> > Shouldn't we avoid registering any memory for the whole video ram area?
> > I mean:
> >
> > 0xa0000 - 0x100000
> No, because SeaBIOS load the Options ROM (VGA Bios, PXE) to the area
> between 0xc0000 and 0x100000, and this go through QEMU.
> The area between 0xa0000 and 0xc0000 is registred later by the
> cirrus_vga bits, as IO.

OK. Can you please expand your comment in the code with the same

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