1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
--- /home/djm/linux-2.6.7/arch/ia64/kernel/irq_ia64.c 2004-06-15 23:19:13.000000000 -0600
+++ arch/ia64/irq_ia64.c 2005-02-17 13:17:16.000000000 -0700
@@ -17,18 +17,26 @@
#include <linux/config.h>
#include <linux/module.h>
+#ifndef XEN
#include <linux/jiffies.h>
+#endif
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#ifndef XEN
#include <linux/kernel_stat.h>
+#endif
#include <linux/slab.h>
+#ifndef XEN
#include <linux/ptrace.h>
#include <linux/random.h> /* for rand_initialize_irq() */
#include <linux/signal.h>
+#endif
#include <linux/smp.h>
+#ifndef XEN
#include <linux/smp_lock.h>
+#endif
#include <linux/threads.h>
#include <asm/bitops.h>
@@ -101,6 +109,24 @@
ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
{
unsigned long saved_tpr;
+#if 0
+//FIXME: For debug only, can be removed
+ static char firstirq = 1;
+ static char firsttime[256];
+ static char firstpend[256];
+ if (firstirq) {
+ int i;
+ for (i=0;i<256;i++) firsttime[i] = 1;
+ for (i=0;i<256;i++) firstpend[i] = 1;
+ firstirq = 0;
+ }
+ if (firsttime[vector]) {
+ printf("**** (entry) First received int on vector=%d,itc=%lx\n",
+ (unsigned long) vector, ia64_get_itc());
+ firsttime[vector] = 0;
+ }
+#endif
+
#if IRQ_DEBUG
{
@@ -145,6 +171,27 @@
ia64_setreg(_IA64_REG_CR_TPR, vector);
ia64_srlz_d();
+#ifdef XEN
+ if (vector != 0xef) {
+ extern void vcpu_pend_interrupt(void *, int);
+#if 0
+ if (firsttime[vector]) {
+ printf("**** (iterate) First received int on vector=%d,itc=%lx\n",
+ (unsigned long) vector, ia64_get_itc());
+ firsttime[vector] = 0;
+ }
+ if (firstpend[vector]) {
+ printf("**** First pended int on vector=%d,itc=%lx\n",
+ (unsigned long) vector,ia64_get_itc());
+ firstpend[vector] = 0;
+ }
+#endif
+ //FIXME: TEMPORARY HACK!!!!
+ vcpu_pend_interrupt(dom0->exec_domain[0],vector);
+ domain_wake(dom0->exec_domain[0]);
+ }
+ else
+#endif
do_IRQ(local_vector_to_irq(vector), regs);
/*
|
