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Re: [PATCH v3 2/5] xen/x86: manually build xen.mb.efi binary

  • To: Jan Beulich <jbeulich@xxxxxxxx>
  • From: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
  • Date: Mon, 17 May 2021 15:20:39 +0200
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  • Cc: Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 17 May 2021 13:21:09 +0000
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On Mon, May 17, 2021 at 08:48:32AM +0200, Jan Beulich wrote:
> On 07.05.2021 22:26, Bob Eshleman wrote:
> > What is your intuition WRT the idea that instead of trying add a PE/COFF hdr
> > in front of Xen's mb2 bin, we instead go the route of introducing valid mb2
> > entry points into xen.efi?
> At the first glance I think this is going to be less intrusive, and hence
> to be preferred. But of course I haven't experimented in any way ...

When I worked on this a few years ago I tried that way. Sadly I failed
because I was not able to produce "linear" PE image using binutils
exiting that days. Though I think you should try once again. Maybe
newer binutils are more flexible and will be able to produce a PE image
with properties required by Multiboot2 protocol.




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