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

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH 4/5] xen: Fix the memory registration to reflect of what is done by Xen.
From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Date: Mon, 18 Jul 2011 16:29:02 +0100
Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Alexander Graf <agraf@xxxxxxx>, QEMU-devel <qemu-devel@xxxxxxxxxx>
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On Mon, Jul 18, 2011 at 12:14, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> 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
> explanation?

Yes, I will do that.

Anthony PERARD

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