[Xen-changelog] [IA64] Get rid of dcr bit 63 trick.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID cdecdd55f0d32f91d418840740adab6b798e6131
# Parent  299f048c4855014f7a3514e58f24768974f44e85
[IA64] Get rid of dcr bit 63 trick.

(Use ar.rsc.pl instead).

Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
---
 linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff -r 299f048c4855 -r cdecdd55f0d3 
linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S
--- a/linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S     Mon May 15 13:42:18 
2006 -0600
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/xensetup.S     Mon May 15 14:12:07 
2006 -0600
@@ -18,12 +18,13 @@ running_on_xen:
 
        .text
 GLOBAL_ENTRY(early_xen_setup)
-       mov r8=cr.dcr
+       mov r8=ar.rsc           // Initialized in head.S
 (isBP) movl r9=running_on_xen;;
-       extr.u r8=r8,63,1;;
-       cmp.ne p7,p0=r8,r0;;
+       extr.u r8=r8,2,2;;      // Extract pl fields
+       cmp.ne p7,p0=r8,r0;;    // p7: running on xen 
+(p7)   mov r8=1                // booleanize.
+(p7)   movl r10=xen_ivt;;
 (isBP) st4 [r9]=r8
-(p7)   movl r10=xen_ivt;;
 (p7)   mov cr.iva=r10
        br.ret.sptk.many rp;;
 END(early_xen_setup)

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