public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
From: "Fan, Jeff" <jeff.fan@intel.com>
To: Shubha Ramani <shubharamani@yahoo.com>,
	"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Re: Do BSPs only have to be logical thread 0 ?
Date: Tue, 23 Aug 2016 03:04:33 +0000	[thread overview]
Message-ID: <542CF652F8836A4AB8DBFAAD40ED192A143DC41B@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <686725847.17974924.1471378566839.JavaMail.yahoo@mail.yahoo.com>

When system power on, one processor (usually, it is thread 0) will be selected to be BSP, it is descripted in IA32 Software Developer User Manual.
On POST phase, PI MP PPI and Protocol service provide SwitchBSP() service to switch BSP to other enabled thread, it is descripted in PI specification.

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Shubha Ramani
Sent: Wednesday, August 17, 2016 4:16 AM
To: edk2-devel@lists.01.org
Subject: [edk2] Do BSPs only have to be logical thread 0 ?

In other words, suppose a BSP  is running in hyperthreaded ON mode and it has 2 threads per physical core. Can the BSP be either thread 0 or thread 1 ?Is this documented somewhere ?
Thanks,
Shubha Shubha D. Ramanishubharamani@gmail.com shubharamani@yahoo.com _______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel

  reply	other threads:[~2016-08-23  3:04 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <686725847.17974924.1471378566839.JavaMail.yahoo.ref@mail.yahoo.com>
2016-08-16 20:16 ` Do BSPs only have to be logical thread 0 ? Shubha Ramani
2016-08-23  3:04   ` Fan, Jeff [this message]
2016-08-24  3:43     ` incorrected set variable size in InitSmmProfileCallBack of UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c wang xiaofeng
     [not found]       ` <74D8A39837DF1E4DA445A8C0B3885C50028062B2@shsmsx102.ccr.corp.intel.com>
2016-08-24  4:27         ` wang xiaofeng

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-list from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=542CF652F8836A4AB8DBFAAD40ED192A143DC41B@shsmsx102.ccr.corp.intel.com \
    --to=devel@edk2.groups.io \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox