[Xen-ia64-devel] Question to frametable_miss()

To:	xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-ia64-devel] Question to frametable_miss()
From:	Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx>
Date:	Tue, 19 Jun 2007 15:55:40 +0200
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Hi,

currently I'am looking at the code to bring in protection key support in xen 
and found the following lines in arch/ia64/xen/ivt.S within the  function
GLOBAL_ENTRY(frametable_miss)
....
mov r25=0x700|(PAGE_SHIFT<<2) // key=7
...
mov cr.itir=r25

What is the sense of the 0x700 ? Currently Xen doesn't use protection keys.
So why is this explicitly set here?
Many thanks for any hints!

Dietmar.

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[Xen-ia64-devel] Question to frametable_miss(), Dietmar Hahn <= Re: [Xen-ia64-devel] Question to frametable_miss(), tgingold Re: [Xen-ia64-devel] Question to frametable_miss(), Kouya Shimura Re: [Xen-ia64-devel] Question to frametable_miss(), Dietmar Hahn