fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / i386 / kernel / irq.c

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 5fe547c..7226f96 100644 (file)
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,8 +53,10 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
  */
 fastcall unsigned int do_IRQ(struct pt_regs *regs)
 {      
+       struct pt_regs *old_regs;
        /* high bit used in ret_from_ code */
        int irq = ~regs->orig_eax;
+       struct irq_desc *desc = irq_desc + irq;
 #ifdef CONFIG_4KSTACKS
        union irq_ctx *curctx, *irqctx;
        u32 *isp;
@@ -66,6 +68,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                BUG();
        }
 
+       old_regs = set_irq_regs(regs);
        irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
        /* Debugging check for stack overflow: is there less than 1KB free? */
@@ -110,19 +113,20 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                        (curctx->tinfo.preempt_count & SOFTIRQ_MASK);
 
                asm volatile(
-                       "       xchgl   %%ebx,%%esp      \n"
-                       "       call    __do_IRQ         \n"
+                       "       xchgl  %%ebx,%%esp      \n"
+                       "       call   *%%edi           \n"
                        "       movl   %%ebx,%%esp      \n"
                        : "=a" (arg1), "=d" (arg2), "=b" (ebx)
-                       :  "0" (irq),   "1" (regs),  "2" (isp)
-                       : "memory", "cc", "ecx"
+                       :  "0" (irq),   "1" (desc),  "2" (isp),
+                          "D" (desc->handle_irq)
+                       : "memory", "cc"
                );
        } else
 #endif
-               __do_IRQ(irq, regs);
+               desc->handle_irq(irq, desc);
 
        irq_exit();
-
+       set_irq_regs(old_regs);
        return 1;
 }
 
@@ -253,7 +257,8 @@ int show_interrupts(struct seq_file *p, void *v)
                for_each_online_cpu(j)
                        seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-               seq_printf(p, " %14s", irq_desc[i].chip->typename);
+               seq_printf(p, " %8s", irq_desc[i].chip->name);
+               seq_printf(p, "-%-8s", irq_desc[i].name);
                seq_printf(p, "  %s", action->name);
 
                for (action=action->next; action; action = action->next)
@@ -283,7 +288,9 @@ skip:
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
+#ifndef CONFIG_XEN
 #include <mach_apic.h>
+#endif
 
 void fixup_irqs(cpumask_t map)
 {
@@ -297,7 +304,9 @@ void fixup_irqs(cpumask_t map)
 
                cpus_and(mask, irq_desc[irq].affinity, map);
                if (any_online_cpu(mask) == NR_CPUS) {
+#ifndef CONFIG_XEN
                        printk("Breaking affinity for irq %i\n", irq);
+#endif
                        mask = map;
                }
                if (irq_desc[irq].chip->set_affinity)