Merge branches 'acpi-init' and 'acpi-hotplug'
* acpi-init:
ACPI / init: Run acpi_early_init() before timekeeping_init()
* acpi-hotplug:
ACPI / memhotplug: add parameter to disable memory hotplug
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b9e9bd8..6201229 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -343,6 +343,9 @@
no: ACPI OperationRegions are not marked as reserved,
no further checks are performed.
+ acpi_no_memhotplug [ACPI] Disable memory hotplug. Useful for kdump
+ kernels.
+
add_efi_memmap [EFI; X86] Include EFI memory map in
kernel's map of available physical RAM.
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 9aeacdf..b67be85 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -360,7 +360,19 @@
acpi_memory_device_free(mem_device);
}
+static bool __initdata acpi_no_memhotplug;
+
void __init acpi_memory_hotplug_init(void)
{
+ if (acpi_no_memhotplug)
+ return;
+
acpi_scan_add_handler_with_hotplug(&memory_device_handler, "memory");
}
+
+static int __init disable_acpi_memory_hotplug(char *str)
+{
+ acpi_no_memhotplug = true;
+ return 1;
+}
+__setup("acpi_no_memhotplug", disable_acpi_memory_hotplug);
diff --git a/init/main.c b/init/main.c
index febc511..b6d93c8 100644
--- a/init/main.c
+++ b/init/main.c
@@ -565,6 +565,7 @@
init_timers();
hrtimers_init();
softirq_init();
+ acpi_early_init();
timekeeping_init();
time_init();
sched_clock_postinit();
@@ -641,7 +642,6 @@
check_bugs();
- acpi_early_init(); /* before LAPIC and SMP init */
sfi_init_late();
if (efi_enabled(EFI_RUNTIME_SERVICES)) {