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[Xen-devel] Re: [RFC PATCH 07/35] Make LOAD_OFFSET defined by subarch

To: Chris Wright <chrisw@xxxxxxxxxxxx>
Subject: [Xen-devel] Re: [RFC PATCH 07/35] Make LOAD_OFFSET defined by subarch
From: Zachary Amsden <zach@xxxxxxxxxx>
Date: 2006年5月10日 16:28:51 -0700
Cc: virtualization@xxxxxxxxxxxxxx, Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Ian Pratt <ian.pratt@xxxxxxxxxxxxx>
Delivery-date: 2006年5月10日 16:32:49 -0700
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Chris Wright wrote:
Change LOAD_OFFSET so that the kernel has virtual addresses in the elf header 
fields.
Unlike bare metal kernels, Xen kernels start with virtual address
management turned on and thus the addresses to load to should be
virtual addresses.
This patch interferes with using a traditional bootloader. The loader for Xen should be smarter - it already has VIRT_BASE from the xen_guest section, and can simply add the relocation to these header fields. This is unnecessary, and one of the many reasons a Xen kernel can't run in a normal environment.
Zach
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