This could also be placed in alt_itlb_miss as the code
branches there. The code does seem to work when placed
in alt_itlb_miss. However I prefer the more minimal change.
Curiously, adding this code to dtlb_miss (or alt_dtlb_miss)
causes booting to fail.
Cc: Isaku Yamahata <[EMAIL PROTECTED]>
Cc: Tristan Gingold <[EMAIL PROTECTED]>
Cc: Alex Williamson <[EMAIL PROTECTED]>
Cc: Aron Griffis <[EMAIL PROTECTED]>
Signed-off-by: Simon Horman <[EMAIL PROTECTED]>
Index: 20071119-ia64/xen/arch/ia64/xen/ivt.S
===================================================================
--- 20071119-ia64.orig/xen/arch/ia64/xen/ivt.S 2007-11-25 22:44:12.000000000
-0700
+++ 20071119-ia64/xen/arch/ia64/xen/ivt.S 2007-11-25 22:44:20.000000000
-0700
@@ -135,14 +135,22 @@
cmp.eq p8,p0=0x18,r17 // 0xc...
cmp.eq p9,p0=0x1c,r17 // 0xe...
;;
- cmp.eq.and p8,p0=r25,r23 // rr[6] == XEN_EFI_RID
- cmp.eq.and p9,p0=r25,r24 // rr[7] == XEN_EFI_RID
- ;;
-(p8) br.cond.spnt late_alt_itlb_miss
-(p9) br.cond.spnt late_alt_itlb_miss
+ cmp.ne.and p8,p0=r25,r23 // rr[6] == XEN_EFI_RID
+ cmp.ne.and p9,p0=r25,r24 // rr[7] == XEN_EFI_RID
;;
+(p8) br.cond.spnt fast_tlb_miss_reflect
+(p9) br.cond.spnt fast_tlb_miss_reflect
- br.cond.spnt fast_tlb_miss_reflect
+ // EFI PAGE size is IA64_GRANULE_SIZE
+ // itir's key should be 0, as should the reserved space
+ // thus we can just set itir = (IA64_GRANULE_SHIFT << 2)
+ movl r20=IA64_GRANULE_SHIFT
+ ;;
+ shl r20=r20,2
+ ;;
+ mov cr.itir=r20
+ ;;
+ br.cond.sptk late_alt_itlb_miss
END(itlb_miss)
.org ia64_ivt+0x0800
--
--
Horms
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