| commit | 03a05ed1152944000151d57b71000de287a1eb02 | |
| author | Zhao Yakui <yakui.zhao@intel.com> | |
| Fri, 11 Dec 2009 07:17:20 +0000 (11 15:17 +0800) | ||
| committer | Len Brown <len.brown@intel.com> | |
| Tue, 15 Dec 2009 02:54:30 +0000 (14 21:54 -0500) | ||
| tree | 8ff812b78a2395f66cfd5329f6a1b10e27860bc7 | treesnapshot (tar.gz zip) |
| parent | 22763c5cf3690a681551162c15d34d935308c8d7 | commitdiff |
ACPI: Use the ARB_DISABLE for the CPU which model id is less than 0x0f.
Currently, ARB_DISABLE is a NOP on all of the recent Intel platforms.
For such platforms, reduce contention on c3_lock by skipping the fake
ARB_DISABLE.
The cpu model id on one laptop is 14. If we disable ARB_DISABLE on this box,
the box can't be booted correctly. But if we still enable ARB_DISABLE on this
box, the box can be booted correctly.
So we still use the ARB_DISABLE for the cpu which mode id is less than 0x0f.
http://bugzilla.kernel.org/show_bug.cgi?id=14700
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>
cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
Currently, ARB_DISABLE is a NOP on all of the recent Intel platforms.
For such platforms, reduce contention on c3_lock by skipping the fake
ARB_DISABLE.
The cpu model id on one laptop is 14. If we disable ARB_DISABLE on this box,
the box can't be booted correctly. But if we still enable ARB_DISABLE on this
box, the box can be booted correctly.
So we still use the ARB_DISABLE for the cpu which mode id is less than 0x0f.
http://bugzilla.kernel.org/show_bug.cgi?id=14700
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>
cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
| arch/x86/kernel/acpi/cstate.c | diffblobblamehistory |