x86: convert some existing cpuid disable options to new generic bitmap
Andi Kleen [Wed, 30 Jan 2008 12:33:20 +0000 (13:33 +0100)]
This convers nofxsr, mem=nopentium and nosep to use the new
generic cpuid disable bitmap instead of using own variables.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/cpu/common.c
arch/x86/kernel/setup_32.c

index f0f29dd..5f9c8e3 100644 (file)
@@ -60,14 +60,10 @@ EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
 __u32 cleared_cpu_caps[NCAPINTS] __cpuinitdata;
 
 static int cachesize_override __cpuinitdata = -1;
-static int disable_x86_fxsr __cpuinitdata;
 static int disable_x86_serial_nr __cpuinitdata = 1;
-static int disable_x86_sep __cpuinitdata;
 
 struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {};
 
-extern int disable_pse;
-
 static void __cpuinit default_init(struct cpuinfo_x86 * c)
 {
        /* Not much we can do here... */
@@ -216,16 +212,8 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
 
 static int __init x86_fxsr_setup(char * s)
 {
-       /* Tell all the other CPUs to not use it... */
-       disable_x86_fxsr = 1;
-
-       /*
-        * ... and clear the bits early in the boot_cpu_data
-        * so that the bootup process doesn't try to do this
-        * either.
-        */
-       clear_bit(X86_FEATURE_FXSR, boot_cpu_data.x86_capability);
-       clear_bit(X86_FEATURE_XMM, boot_cpu_data.x86_capability);
+       setup_clear_cpu_cap(X86_FEATURE_FXSR);
+       setup_clear_cpu_cap(X86_FEATURE_XMM);
        return 1;
 }
 __setup("nofxsr", x86_fxsr_setup);
@@ -233,7 +221,7 @@ __setup("nofxsr", x86_fxsr_setup);
 
 static int __init x86_sep_setup(char * s)
 {
-       disable_x86_sep = 1;
+       setup_clear_cpu_cap(X86_FEATURE_SEP);
        return 1;
 }
 __setup("nosep", x86_sep_setup);
@@ -462,19 +450,6 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
        if ( tsc_disable )
                clear_bit(X86_FEATURE_TSC, c->x86_capability);
 
-       /* FXSR disabled? */
-       if (disable_x86_fxsr) {
-               clear_bit(X86_FEATURE_FXSR, c->x86_capability);
-               clear_bit(X86_FEATURE_XMM, c->x86_capability);
-       }
-
-       /* SEP disabled? */
-       if (disable_x86_sep)
-               clear_bit(X86_FEATURE_SEP, c->x86_capability);
-
-       if (disable_pse)
-               clear_bit(X86_FEATURE_PSE, c->x86_capability);
-
        /* If the model name is still unset, do table lookup. */
        if ( !c->x86_model_id[0] ) {
                char *p;
@@ -629,8 +604,7 @@ void __init early_cpu_init(void)
        /* pse is not compatible with on-the-fly unmapping,
         * disable it even if the cpus claim to support it.
         */
-       clear_bit(X86_FEATURE_PSE, boot_cpu_data.x86_capability);
-       disable_pse = 1;
+       setup_clear_cpu_cap(X86_FEATURE_PSE);
 #endif
 }
 
index 6802a38..26a56f7 100644 (file)
@@ -68,8 +68,6 @@
    address, and must not be in the .bss segment! */
 unsigned long init_pg_tables_end __initdata = ~0UL;
 
-int disable_pse __cpuinitdata = 0;
-
 /*
  * Machine setup..
  */
@@ -242,8 +240,7 @@ static int __init parse_mem(char *arg)
                return -EINVAL;
 
        if (strcmp(arg, "nopentium") == 0) {
-               clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE);
-               disable_pse = 1;
+               setup_clear_cpu_cap(X86_FEATURE_PSE);
        } else {
                /* If the user specifies memory size, we
                 * limit the BIOS-provided memory map to