]> err.no Git - linux-2.6/commit
x86: remove explicit C3 TSC check on 64bit
authorAndi Kleen <ak@suse.de>
Wed, 30 Jan 2008 12:32:41 +0000 (13:32 +0100)
committerIngo Molnar <mingo@elte.hu>
Wed, 30 Jan 2008 12:32:41 +0000 (13:32 +0100)
commit32c7553f824d0d76771404f0e11d6059f82e8de7
tree12803c3426871f487652b225358a2c0ed7492989
parent51fc97b93545e71cec578d6771bceeb92bc2d50b
x86: remove explicit C3 TSC check on 64bit

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>
arch/x86/kernel/tsc_64.c