Commit 8424950b authored Jan 30, 2008 by Andi Kleen Committed by Ingo Molnar Jan 30, 2008

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



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>

parent 13530257

arch/x86/kernel/cpu/common.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -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);