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 6dea830..3e94720 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -82,6 +82,11 @@
/* 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 @@
}
__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);