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authorAndi Kleen <ak@suse.de>2008-01-30 13:33:20 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:20 +0100
commit404ee5b14b68d3cba287c2596588b83790c49f7b (patch)
tree6007a5d2c461c3435edbc9335c84ff45ec4715ca /arch/x86/kernel/cpu
parent8424950b5e85543a494b5d940bb2f5f9f16f56a9 (diff)
x86: convert TSC disabling to generic cpuid disable bitmap
Fix from: Ian Campbell <ijc@hellion.org.uk> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r--arch/x86/kernel/cpu/bugs.c2
-rw-r--r--arch/x86/kernel/cpu/common.c9
2 files changed, 1 insertions, 10 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index a96abd453e0..9b95edcfc6a 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -154,7 +154,7 @@ static void __init check_config(void)
* If we configured ourselves for a TSC, we'd better have one!
*/
#ifdef CONFIG_X86_TSC
- if (!cpu_has_tsc && !tsc_disable)
+ if (!cpu_has_tsc)
panic("Kernel compiled for Pentium+, requires TSC feature!");
#endif
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index c66991a04a8..dfc9563fc4f 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -446,10 +446,6 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
* we do "generic changes."
*/
- /* TSC disabled? */
- if ( tsc_disable )
- clear_bit(X86_FEATURE_TSC, c->x86_capability);
-
/* If the model name is still unset, do table lookup. */
if ( !c->x86_model_id[0] ) {
char *p;
@@ -650,11 +646,6 @@ void __cpuinit cpu_init(void)
if (cpu_has_vme || cpu_has_tsc || cpu_has_de)
clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
- if (tsc_disable && cpu_has_tsc) {
- printk(KERN_NOTICE "Disabling TSC...\n");
- /**** FIX-HPA: DOES THIS REALLY BELONG HERE? ****/
- clear_bit(X86_FEATURE_TSC, boot_cpu_data.x86_capability);
- }
load_idt(&idt_descr);
switch_to_new_gdt();