lkml.org 
[lkml]   [2015]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 2/4] x86, mwaitt: introduce mwaitx idle with a configurable timer

* Huang Rui <ray.huang@amd.com> wrote:

> No, the timeout value doesn't decide how 'deep' the power state
> enters. Basically, the same power consumption with any timeout.
>
> I summarized the comparison of mwait and mwaitx
>
> MWAIT MWAITX
> opcode 0f 01 c9 | 0f 01 fb
> ECX[0] value of RFLAGS.IF seen by instruction
> ECX[1] unused/#GP if set | enable timer if set
> ECX[31:2] unused/#GP if set
> EAX unused
> EBX[31:0] unused | max wait time (loops)
>
>
> MONITOR MONITORX
> opcode 0f 01 c8 | 0f 01 fa
> EAX (logical) address to monitor
> ECX #GP if not zero

Ok, thanks for the clarification!

Thanks,

Ingo


\
 
 \ /
  Last update: 2015-05-25 13:21    [W:0.091 / U:1.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site