[Xen-changelog] [xen-unstable] [IA64] vti fault handler clean up: clean up VMX_DO_SAVE_MIN

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

# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1197663998 25200
# Node ID d0f0ed665d1aa548e96bceff36ea5df6bdf31d92
# Parent  81cee3aa9e909f612b12f777abb9ba3e5a857f4f
[IA64] vti fault handler clean up: clean up VMX_DO_SAVE_MIN

- p15 was set twice with same condition
- r1 was set to r21 via r16. using r16 doesn't make sense.
  direct set r1 to r21.

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
 xen/arch/ia64/vmx/vmx_minstate.h |    4 +---
 1 files changed, 1 insertion(+), 3 deletions(-)

diff -r 81cee3aa9e90 -r d0f0ed665d1a xen/arch/ia64/vmx/vmx_minstate.h
--- a/xen/arch/ia64/vmx/vmx_minstate.h  Fri Dec 14 13:24:44 2007 -0700
+++ b/xen/arch/ia64/vmx/vmx_minstate.h  Fri Dec 14 13:26:38 2007 -0700
@@ -107,7 +107,6 @@
  */
 
 #define VMX_DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA)                                  
         \
-    VMX_MINSTATE_GET_CURRENT(r16);      /* M (or M;;I) */                      
         \
     mov r27=ar.rsc;                     /* M */                                
         \
     mov r20=r1;                         /* A */                                
         \
     mov r25=ar.unat;                    /* M */                                
         \
@@ -122,7 +121,7 @@
     ;;                                                                         
         \
 (p6)br.spnt.few vmx_panic;                                                     
         \
     tbit.z p0,p15=r29,IA64_PSR_I_BIT;                                          
         \
-    mov r1=r16;                                                                
         \
+    VMX_MINSTATE_GET_CURRENT(r1);      /* M (or M;;I) */                       
         \
     /*    mov r21=r16;  */                                                     
         \
     /* switch from user to kernel RBS: */                                      
         \
     ;;                                                                         
         \
@@ -137,7 +136,6 @@
     st8 [r16]=r29;      /* save cr.ipsr */                                     
         \
     ;;                                                                         
         \
     lfetch.fault.excl.nt1 [r17];                                               
         \
-    tbit.nz p15,p0=r29,IA64_PSR_I_BIT;                                         
         \
     mov r29=b0                                                                 
         \
     ;;                                                                         
         \
     adds r16=PT(R8),r1; /* initialize first base pointer */                    
         \

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