From: Keir Fraser <keir@xensource.com>
Subject: Re: RE: [PATCH] calling zap_low_mappings breaks xen
	boot on the es7000
Date: Thu, 14 Jun 2007 19:12:11 +0100
Message-ID: <C297438B.10AF9%keir@xensource.com>
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To: "Subrahmanian, Raj" <raj.subrahmanian@unisys.com>, xen-devel@lists.xensource.com
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On 14/6/07 18:58, "Subrahmanian, Raj" <raj.subrahmanian@unisys.com> wrote:

> This patch tries to switch into APIC mode only on classic ES7000s. This
> is not required on the ES7000 Zorros.
> With this patch, I can once again boot Xen on an ES7000, on the unstable
> tip.

Does this leave unstable tip broken on the older ES7000 though?

The proper fix would seem to be to find out which access is faulting, and to
obtain the required virtual address by __va() or by map_domain_page() rather
than relying on the phys==virt mapping. Or is the problem more tricky than
that?

 -- Keir