AcoSail/kernel_optimize_test
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x86: don't disable RDTSC in userland for 32bit notsc

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Modern 32bit userland doesn't even boot when the TSC is disabled
because ld.so tends to contain RDTSCs.  So make notsc only effective for the
kernel, similar to 64bit.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andi Kleen 2008-01-30 13:33:20 +01:00 committed by Ingo Molnar
parent 135302577b
commit 8424950b5e
1 changed files with 0 additions and 1 deletions
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arch/x86/kernel/cpu/common.c
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@ -654,7 +654,6 @@ void __cpuinit cpu_init(void)
printk(KERN_NOTICE "Disabling TSC...\n");
/**** FIX-HPA: DOES THIS REALLY BELONG HERE? ****/
clear_bit(X86_FEATURE_TSC, boot_cpu_data.x86_capability);
set_in_cr4(X86_CR4_TSD);
}
load_idt(&idt_descr);