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RE: [Xen-ia64-devel] relocated Xen may conflict with identity mapping


  • To: "Tristan Gingold" <tgingold@xxxxxxx>
  • From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
  • Date: Wed, 26 Sep 2007 12:33:52 +0800
  • Cc: Alex Williamson <alex.williamson@xxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 25 Sep 2007 21:34:20 -0700
  • List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: Acf/9hXmL6MAO6eMR5OA0XWH/LkW/gAADJyg
  • Thread-topic: [Xen-ia64-devel] relocated Xen may conflict with identity mapping

>From: Tristan Gingold [mailto:tgingold@xxxxxxx]
>Sent: Wednesday, September 26, 2007 12:37 PM
>To: Xu, Anthony
>Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx; Alex Williamson
>Subject: Re: [Xen-ia64-devel] relocated Xen may conflict with identity
>mapping
>
>On Wed, Sep 26, 2007 at 12:22:00PM +0800, Xu, Anthony wrote:
>> Hi Alex,
>>
>> Since the address space of relocated Xen is in the same region with
>> identity mapping address space.
>>
>> There may be conflict.
>>
>> Can we put Xen as other region?
>
>Yes, the new mapping could be:
>0xf000000000000000: WB identify mapped
>0xf200000000000000: UC identify mapped
>0xf400000000000000: xen + default sharedinfo + percpu
>0xf600000000000000: virt frame table
>
>IIRC I tested such a map while I was testing xen relocation.

Great! Looking forward to the patch

-- Anthony

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