On Tue, Aug 26, 2014 at 10:38:32AM +0800, Li, Aubrey wrote: > On 2014/8/25 18:12, Mika Westerberg wrote: > > On Fri, Aug 22, 2014 at 10:06:21PM +0800, Li, Aubrey wrote: > >> On 2014/8/22 19:39, Mika Westerberg wrote: > >>> From: Mahesh Kumar P <mahesh.kuma...@intel.com> > >>> > >>> Cherrytrail/Braswell is a successor of Intel Baytrail but has slighly > >>> different CPU idle values and latencies. > >>> > >>> Signed-off-by: Kumar P Mahesh <mahesh.kuma...@intel.com> > >>> Signed-off-by: Alan Cox <a...@linux.intel.com> > >>> Signed-off-by: Mika Westerberg <mika.westerb...@linux.intel.com> > >>> --- > >>> I learned from Mahesh that C1e, C4 and S0i2 states are deprecated so those > >>> are now removed. > >> > >> If the platform has ACPI supported, I believe Len wants to see what > >> C-states number exported by ACPI. > >> > >> Please boot the machine with "intel_idle.max_cstate=0" to disable > >> intel_idle, then post the output of the following commands > > > > OK, here goes: > > ACPI exposes 0x58 as C6 mwait hint while the patch proposes 0x52 for C6. > Can you please remove "intel_idle.max_cstate=0" and run "dmesg | grep > idle" again to see how many C6 supports in CPUID enumeration?
[ 16.685769] intel_idle: MWAIT substates: 0x33000020 [ 16.691236] intel_idle: v0.4 model 0x4C [ 16.695539] intel_idle: lapic_timer_reliable_states 0xffffffff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
