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authorPekka Enberg <penberg@cs.helsinki.fi>2009-04-09 11:52:26 +0300
committerIngo Molnar <mingo@elte.hu>2009-04-10 14:35:57 +0200
commit778838600eb6973bdb6fd11e7f91b43cea4d6f45 (patch)
tree82bd6b1b97fc5e95a49c8a96b04639b50b29226b /arch/x86/kernel/irqinit_32.c
parent320fd99672a44ece6d1cd0d838ba31c8ebbf5979 (diff)
downloadlinux-2.6.38-lt-ux500-778838600eb6973bdb6fd11e7f91b43cea4d6f45.tar.gz
x86: unify trivial differences in irqinit_{32,64}.c
Impact: cleanup Reviewed-by Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irqinit_32.c')
-rw-r--r--arch/x86/kernel/irqinit_32.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index a780de3ad5d..72ce94268d3 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -1,20 +1,24 @@
+#include <linux/linkage.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
+#include <linux/timex.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/kernel_stat.h>
#include <linux/sysdev.h>
#include <linux/bitops.h>
+#include <linux/acpi.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/atomic.h>
#include <asm/system.h>
#include <asm/timer.h>
+#include <asm/hw_irq.h>
#include <asm/pgtable.h>
#include <asm/desc.h>
#include <asm/apic.h>
@@ -22,6 +26,22 @@
#include <asm/i8259.h>
#include <asm/traps.h>
+/*
+ * ISA PIC or low IO-APIC triggered (INTA-cycle or APIC) interrupts:
+ * (these are usually mapped to vectors 0x30-0x3f)
+ */
+
+/*
+ * The IO-APIC gives us many more interrupt sources. Most of these
+ * are unused but an SMP system is supposed to have enough memory ...
+ * sometimes (mostly wrt. hw bugs) we get corrupted vectors all
+ * across the spectrum, so we really want to be prepared to get all
+ * of these. Plus, more powerful systems might have more than 64
+ * IO-APIC registers.
+ *
+ * (these are usually mapped into the 0x30-0xff vector range)
+ */
+
#ifdef CONFIG_X86_32
/*
* Note that on a 486, we don't want to do a SIGFPE on an irq13