From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ZXSHCAS1.zhaoxin.com (ZXSHCAS1.zhaoxin.com [203.148.12.81]) by mx.groups.io with SMTP id smtpd.web08.32069.1613977741390720370 for ; Sun, 21 Feb 2021 23:09:02 -0800 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: zhaoxin.com, ip: 203.148.12.81, mailfrom: tigerliu@zhaoxin.com) Received: from zxbjmbx2.zhaoxin.com (10.29.252.164) by ZXSHCAS1.zhaoxin.com (10.28.252.161) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Mon, 22 Feb 2021 15:08:56 +0800 Received: from zxbjmbx2.zhaoxin.com (10.29.252.164) by zxbjmbx2.zhaoxin.com (10.29.252.164) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Mon, 22 Feb 2021 15:08:55 +0800 Received: from zxbjmbx2.zhaoxin.com ([fe80::4d77:9dba:64a8:8ec3]) by zxbjmbx2.zhaoxin.com ([fe80::4d77:9dba:64a8:8ec3%4]) with mapi id 15.01.1979.003; Mon, 22 Feb 2021 15:08:55 +0800 From: "Tiger Liu(BJ-RD)" To: "devel@edk2.groups.io" Subject: [edk2-devel] MP Services Protocol : Support Hyper threading or not Thread-Topic: [edk2-devel] MP Services Protocol : Support Hyper threading or not Thread-Index: AdcI52Gb3IaVjx52SlynVZtHRupQ/Q== Date: Mon, 22 Feb 2021 07:08:55 +0000 Message-ID: <03f9e675800143189bc59fab08865256@zhaoxin.com> Accept-Language: zh-CN, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.29.28.41] MIME-Version: 1.0 Return-Path: TigerLiu@zhaoxin.com Content-Language: zh-CN Content-Type: multipart/alternative; boundary="_000_03f9e675800143189bc59fab08865256zhaoxincom_" --_000_03f9e675800143189bc59fab08865256zhaoxincom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear All: I have a question about MP Services Protocol. Does it support Hyper-threading technology? For example: A Quad-cores CPU(with HT feature support), actually it is equal to 8 logica= l cores. Take assumption 8 logical cores are all healthy and being enabled. So: 1. Will EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors()return total 8= logical processor cores? 2. Will EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() make all 8 logical co= res do some tasks simultaneously? Thanks ????? ????????????????????????????????????????????????????? CONFIDENTIAL NOTE: This email contains confidential or legally privileged information and is f= or the sole use of its intended recipient. Any unauthorized review, use, co= pying or forwarding of this email or the content of this email is strictly = prohibited. --_000_03f9e675800143189bc59fab08865256zhaoxincom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear All:

I have a question about MP Serv= ices Protocol.

Does it support Hyper-threading= technology?

 

For example:<= /p>

A Quad-cores CPU(with HT featur= e support), actually it is equal to 8 logical cores.

Take assumption 8 logical cores= are all healthy and being enabled.

 

So:

1= .   &= nbsp;  Will EFI_MP_SERVICES_PR= OTOCOL.GetNumberOfProcessors()return total 8 logical processor cores?<= /o:p>

2= .   &= nbsp;  Will EFI_MP_SERVICES_PR= OTOCOL.StartupAllAPs() make all 8 logical cores do some tasks simultaneousl= y?

 

Thanks



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