From: Zhao Yakui Date: Fri, 11 Dec 2009 07:17:20 +0000 (+0800) Subject: ACPI: Use the ARB_DISABLE for the CPU which model id is less than 0x0f. X-Git-Tag: v2.6.33-rc1~47^2~15^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03a05ed1152944000151d57b71000de287a1eb02;p=pandora-kernel.git 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 Acked-by: Pallipadi, Venkatesh cc: stable@kernel.org Signed-off-by: Len Brown --- Reading git-diff-tree failed