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Re: [Xen-devel] [bug] pv-grub doesn't run on rhel5

To: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Subject: Re: [Xen-devel] [bug] pv-grub doesn't run on rhel5
From: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
Date: Thu, 14 Aug 2008 16:14:00 +0100
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Gerd Hoffmann, le Thu 14 Aug 2008 17:04:07 +0200, a écrit :
> Samuel Thibault wrote:
> > The problem is a bug in the hypervisor's mod_l3_entry which calls
> > adjust_guest_l3e before calling get_page_from_l3e, see c/s 17061.  Is it
> > possible for you to backport the patch?
> So due to the wrong ordering xen first sets the bits, then notices they
> shouldn't be set, then complains the guest passed invalid bits?


> Uhm, well, no way to fix minios to run on older xen versions then I
> guess (which I'd prefer).  Except maybe limiting the 32bit version to
> 1GB address space.  Which should be fine at least for pvgrub ...

That should be feasible indeed.

> Another pvgrub issue:  Is booting guests with the framebuffer enabled
> supposed to work?

Yes, but you have to not enable the framebuffer in the grub
configuration, because the framebuffer is currently not able to restart.

> I suspect that needs some work on the qemu side.



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