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Re: [Xen-devel] Hardcoded PAGE_OFFSET in head.S

from [Keir Fraser]

[Permanent Link][Original]

To:	Jacob Gorm Hansen <jacobg@xxxxxxx>
Subject:	Re: [Xen-devel] Hardcoded PAGE_OFFSET in head.S
From:	Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date:	Tue, 5 Apr 2005 09:20:45 +0100
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On 5 Apr 2005, at 00:25, Jacob Gorm Hansen wrote:

in kernel/head.S, I see the following:

.section __xen_guest
   .ascii
"GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=3.0,VIRT_BASE=0xC0000000"
                                          ^^^^^^^^^^^^^^^^^^^^
I wonder why setting VIRT_BASE here is necessary, as the ELF headershould contain this information already?

The load and entry address is c0100000, but we want to map memory fromc0000000 to better match the layout of native Linux (where the kernelappears at phys address 1MB).


 -- Keir


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