From: Laszlo Ersek <lersek@redhat.com>
To: "Dong, Eric" <eric.dong@intel.com>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Ni, Ruiyu" <ruiyu.ni@intel.com>
Subject: Re: [Patch 2/2] UefiCpuPkg/MpInitLib: Remove redundant parameter.
Date: Fri, 29 Jun 2018 09:19:49 +0200 [thread overview]
Message-ID: <b347b518-0550-aabf-c961-cacc5924b13b@redhat.com> (raw)
In-Reply-To: <ED077930C258884BBCB450DB737E66224AC1CF9E@shsmsx102.ccr.corp.intel.com>
On 06/29/18 03:48, Dong, Eric wrote:
> Hi Laszlo,
>
>> -----Original Message-----
>> From: Laszlo Ersek [mailto:lersek@redhat.com]
>> I'm currently missing a good understanding of how these counters are
>> modified. They are all qualified "volatile", which suggests they are
>> accessed from multiple processors. Is that correct?
>
> No, actually only FinishedCount is changed by BSP and Aps, other two
> are only changed by BSP. StartCount stands for the AP count which will
> do the task. It is calculated by BSP before Aps start the task.
> RunningCount stands for the AP count which have finished the task. It
> also detected and changed by BSP.
> I will update the patch to remove the volatile for RunningCount.
Highly appreciated!
Laszlo
prev parent reply other threads:[~2018-06-29 7:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-28 11:29 [Patch 1/2] UefiCpuPkg/MpInitLib: Not use disabled AP Eric Dong
2018-06-28 11:29 ` [Patch 2/2] UefiCpuPkg/MpInitLib: Remove redundant parameter Eric Dong
2018-06-28 15:37 ` Laszlo Ersek
2018-06-29 1:48 ` Dong, Eric
2018-06-29 7:19 ` Laszlo Ersek [this message]
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