1.1 --- a/xen/arch/ia64/Rules.mk	Fri Dec 14 13:07:01 2007 -0700
     1.2 +++ b/xen/arch/ia64/Rules.mk	Fri Dec 14 13:09:02 2007 -0700
     1.3 @@ -6,6 +6,7 @@ HAS_ACPI := y
     1.4  HAS_VGA  := y
     1.5  xenoprof := y
     1.6  no_warns ?= n
     1.7 +vti_debug ?= n
     1.8  xen_ia64_expose_p2m	?= y
     1.9  xen_ia64_pervcpu_vhpt	?= y
    1.10  xen_ia64_tlb_track	?= y
    1.11 @@ -36,7 +37,9 @@ CFLAGS	+= $(CPPFLAGS)
    1.12  CFLAGS	+= -DIA64 -DXEN -DLINUX_2_6
    1.13  CFLAGS	+= -ffixed-r13 -mfixed-range=f2-f5,f12-f127,b2-b5
    1.14  CFLAGS	+= -g
    1.15 -#CFLAGS  += -DVTI_DEBUG
    1.16 +ifeq ($(vti_debug),y)
    1.17 +CFLAGS  += -DVTI_DEBUG
    1.18 +endif
    1.19  ifeq ($(xen_ia64_expose_p2m),y)
    1.20  CFLAGS	+= -DCONFIG_XEN_IA64_EXPOSE_P2M
    1.21  endif

     2.1 --- a/xen/arch/ia64/asm-offsets.c	Fri Dec 14 13:07:01 2007 -0700
     2.2 +++ b/xen/arch/ia64/asm-offsets.c	Fri Dec 14 13:09:02 2007 -0700
     2.3 @@ -46,6 +46,7 @@ void foo(void)
     2.4  #ifdef   VTI_DEBUG
     2.5  	DEFINE(IVT_CUR_OFS, offsetof(struct vcpu, arch.arch_vmx.ivt_current));
     2.6  	DEFINE(IVT_DBG_OFS, offsetof(struct vcpu, arch.arch_vmx.ivt_debug));
     2.7 +	DEFINE(IVT_DEBUG_SIZE, sizeof(struct ivt_debug));
     2.8  #endif
     2.9  	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
    2.10  	DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));

     3.1 --- a/xen/arch/ia64/vmx/vmx_ivt.S	Fri Dec 14 13:07:01 2007 -0700
     3.2 +++ b/xen/arch/ia64/vmx/vmx_ivt.S	Fri Dec 14 13:09:02 2007 -0700
     3.3 @@ -70,6 +70,7 @@
     3.4  
     3.5  
     3.6  #ifdef VTI_DEBUG
     3.7 +#define IVT_DEBUG_MASK  (IVT_DEBUG_SIZE * (IVT_DEBUG_MAX - 1))
     3.8  #define VMX_DBG_FAULT(i)                \
     3.9      add r16=IVT_CUR_OFS,r21;            \
    3.10      add r17=IVT_DBG_OFS,r21;;           \
    3.11 @@ -80,9 +81,9 @@
    3.12      mov r22=cr.ifa;                     \
    3.13      mov r23=i;;                         \
    3.14      st8 [r17]=r19,8;                    \
    3.15 -    add r18=32,r18;;                    \
    3.16 +    add r18=IVT_DEBUG_SIZE,r18;;        \
    3.17      st8 [r17]=r20,8;                    \
    3.18 -    mov r19=0xfe0;;                     \
    3.19 +    mov r19=IVT_DEBUG_MASK;;            \
    3.20      st8 [r17]=r22,8;                    \
    3.21      and r18=r19,r18;;                   \
    3.22      st8 [r17]=r23;                      \

     4.1 --- a/xen/arch/ia64/vmx/vmx_vcpu.c	Fri Dec 14 13:07:01 2007 -0700
     4.2 +++ b/xen/arch/ia64/vmx/vmx_vcpu.c	Fri Dec 14 13:09:02 2007 -0700
     4.3 @@ -111,13 +111,10 @@ vmx_vcpu_set_psr(VCPU *vcpu, unsigned lo
     4.4      }
     4.5      new_psr.val=VCPU(vcpu, vpsr);
     4.6  #ifdef	VTI_DEBUG    
     4.7 -    {
     4.8 -    struct pt_regs *regs = vcpu_regs(vcpu);
     4.9      guest_psr_buf[guest_psr_index].ip = regs->cr_iip;
    4.10      guest_psr_buf[guest_psr_index].psr = new_psr.val;
    4.11      if (++guest_psr_index >= 100)
    4.12          guest_psr_index = 0;
    4.13 -    }
    4.14  #endif    
    4.15  #if 0
    4.16      if (old_psr.i != new_psr.i) {

     5.1 --- a/xen/include/asm-ia64/vmx_vpd.h	Fri Dec 14 13:07:01 2007 -0700
     5.2 +++ b/xen/include/asm-ia64/vmx_vpd.h	Fri Dec 14 13:09:02 2007 -0700
     5.3 @@ -22,6 +22,17 @@
     5.4  #ifndef _ASM_IA64_VMX_VPD_H_
     5.5  #define _ASM_IA64_VMX_VPD_H_
     5.6  
     5.7 +#ifdef VTI_DEBUG
     5.8 +/*
     5.9 + * must be power of 2.
    5.10 + * Be carefull to avoid stack over flow keeping
    5.11 + * struct arch_vmx_struct(i.e. struct vcpu) small enough.
    5.12 + * sizeof(struct ivt_debug) * IVT_DEBUG_MAX = 32 * IVT_DEBUG_MAX
    5.13 + */
    5.14 +//#define IVT_DEBUG_MAX 128     /* 4096 bytes */
    5.15 +#define IVT_DEBUG_MAX 16        /*  512 bytes */
    5.16 +#endif
    5.17 +
    5.18  #ifndef __ASSEMBLY__
    5.19  
    5.20  #include <asm/vtm.h>
    5.21 @@ -39,7 +50,6 @@ struct ivt_debug{
    5.22      unsigned long ifa;
    5.23      unsigned long vector;
    5.24  };
    5.25 -#define IVT_DEBUG_MAX 128
    5.26  #endif
    5.27  
    5.28  struct arch_vmx_struct {