x86: apic_32.c - add lapic resource

Add lapic resource into kernel resource map and mark it as busy

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
CC: Maciej W. Rozycki <macro@linux-mips.org>

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 6dea8306d8c05c0303aac0e1c268facda83e74c1..3e947208b9d96b781ef8ea36b91094e445bbaa11 100644 (file)
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -82,6 +82,11 @@ int pic_mode;
 /* Have we found an MP table */
 int smp_found_config;
 
+static struct resource lapic_resource = {
+       .name = "Local APIC",
+       .flags = IORESOURCE_MEM | IORESOURCE_BUSY,
+};
+
 static unsigned int calibration_result;
 
 static int lapic_next_event(unsigned long delta,
@@ -1720,3 +1725,21 @@ static int __init apic_set_verbosity(char *str)
 }
 __setup("apic=", apic_set_verbosity);
 
+static int __init lapic_insert_resource(void)
+{
+       if (!apic_phys)
+               return -1;
+
+       /* Put local APIC into the resource map. */
+       lapic_resource.start = apic_phys;
+       lapic_resource.end = lapic_resource.start + PAGE_SIZE - 1;
+       insert_resource(&iomem_resource, &lapic_resource);
+
+       return 0;
+}
+
+/*
+ * need call insert after e820_reserve_resources()
+ * that is using request_resource
+ */
+late_initcall(lapic_insert_resource);