diff options
| -rw-r--r-- | arch/i386/kernel/apic.c | 25 | ||||
| -rw-r--r-- | arch/i386/kernel/setup.c | 11 | ||||
| -rw-r--r-- | include/asm-i386/apic.h | 13 |
3 files changed, 29 insertions, 20 deletions
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c index b905d7bb9a0..cf45bed96d0 100644 --- a/arch/i386/kernel/apic.c +++ b/arch/i386/kernel/apic.c @@ -41,6 +41,11 @@ #include "io_ports.h" /* + * Knob to control our willingness to enable the local APIC. + */ +int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */ + +/* * Debug level */ int apic_verbosity; @@ -666,26 +671,6 @@ static void apic_pm_activate(void) { } * Original code written by Keir Fraser. */ -/* - * Knob to control our willingness to enable the local APIC. - */ -int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */ - -static int __init lapic_disable(char *str) -{ - enable_local_apic = -1; - clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); - return 0; -} -__setup("nolapic", lapic_disable); - -static int __init lapic_enable(char *str) -{ - enable_local_apic = 1; - return 0; -} -__setup("lapic", lapic_enable); - static int __init apic_set_verbosity(char *str) { if (strcmp("debug", str) == 0) diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index cba67e4ba0a..f1ad9fdeaad 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -44,6 +44,7 @@ #include <linux/edd.h> #include <linux/nodemask.h> #include <video/edid.h> +#include <asm/apic.h> #include <asm/e820.h> #include <asm/mpspec.h> #include <asm/setup.h> @@ -835,6 +836,16 @@ static void __init parse_cmdline_early (char ** cmdline_p) #endif /* CONFIG_X86_LOCAL_APIC */ #endif /* CONFIG_ACPI_BOOT */ +#ifdef CONFIG_X86_LOCAL_APIC + /* enable local APIC */ + else if (!memcmp(from, "lapic", 5)) + lapic_enable(); + + /* disable local APIC */ + else if (!memcmp(from, "nolapic", 6)) + lapic_disable(); +#endif /* CONFIG_X86_LOCAL_APIC */ + /* * highmem=size forces highmem to be exactly 'size' bytes. * This works even on boxes that have no highmem otherwise. diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index a5810cf7b57..53268cd9306 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -5,6 +5,7 @@ #include <linux/pm.h> #include <asm/fixmap.h> #include <asm/apicdef.h> +#include <asm/processor.h> #include <asm/system.h> #define Dprintk(x...) @@ -16,8 +17,20 @@ #define APIC_VERBOSE 1 #define APIC_DEBUG 2 +extern int enable_local_apic; extern int apic_verbosity; +static inline void lapic_disable(void) +{ + enable_local_apic = -1; + clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); +} + +static inline void lapic_enable(void) +{ + enable_local_apic = 1; +} + /* * Define the default level of output to be very little * This can be turned up by using apic=verbose for more |