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[Xen-ia64-devel] Question to frametable_miss()
| To: | xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-ia64-devel] Question to frametable_miss() |
| From: | Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxxxxxxx> |
| Date: | Tue, 19 Jun 2007 15:55:40 +0200 |
| Delivery-date: | Tue, 19 Jun 2007 07:13:37 -0700 |
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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. _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-ia64-devel |
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