x86: remove explicit C3 TSC check on 64bit

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Trust the ACPI code to disable TSC instead when C3 is used.

AMD Fam10h does not disable TSC in any C states so the
check was incorrect there anyways after the change
to handle this like Intel on AMD too.

This allows to use the TSC when C3 is disabled in software
(acpi.max_c_state=2), but the BIOS supports it anyways.

Match i386 behaviour.

Cc: lenb@kernel.org

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 13:32:41 +01:00 • committed by Ingo Molnar

parent 51fc97b935

commit 32c7553f82

1 changed files with 1 additions and 8 deletions

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9

arch/x86/kernel/tsc_64.c

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