All of lore.kernel.org
 help / color / mirror / Atom feed
From: Valentin Schneider <valentin.schneider@arm.com>
To: Ruifeng Zhang <ruifeng.zhang0110@gmail.com>,
	linux@armlinux.org.uk, sudeep.holla@arm.com,
	gregkh@linuxfoundation.org, rafael@kernel.org,
	a.p.zijlstra@chello.nl, dietmar.eggemann@arm.com,
	mingo@kernel.org, ruifeng.zhang1@unisoc.com,
	nianfu.bai@unisoc.com
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/1] arm: topology: parse the topology from the dt
Date: Thu, 15 Apr 2021 19:09:41 +0100	[thread overview]
Message-ID: <871rbbmnbu.mognet@arm.com> (raw)
In-Reply-To: <20210414122326.5255-2-ruifeng.zhang0110@gmail.com>

On 14/04/21 20:23, Ruifeng Zhang wrote:
> From: Ruifeng Zhang <ruifeng.zhang1@unisoc.com>
>
> The arm topology still parse from the MPIDR, but it is incomplete.  When
> the armv8.2 or above cpu runs kernel in EL1 with aarch32 mode, it will
> parse out the wrong topology.
>

Per my other email, isn't the problem that MPIDR can't be trusted to
properly represent the topology, and thus a new method of describing the
topology (cpu-map) has to be used?

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Valentin Schneider <valentin.schneider@arm.com>
To: Ruifeng Zhang <ruifeng.zhang0110@gmail.com>,
	linux@armlinux.org.uk, sudeep.holla@arm.com,
	gregkh@linuxfoundation.org, rafael@kernel.org,
	a.p.zijlstra@chello.nl, dietmar.eggemann@arm.com,
	mingo@kernel.org, ruifeng.zhang1@unisoc.com,
	nianfu.bai@unisoc.com
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/1] arm: topology: parse the topology from the dt
Date: Thu, 15 Apr 2021 19:09:41 +0100	[thread overview]
Message-ID: <871rbbmnbu.mognet@arm.com> (raw)
In-Reply-To: <20210414122326.5255-2-ruifeng.zhang0110@gmail.com>

On 14/04/21 20:23, Ruifeng Zhang wrote:
> From: Ruifeng Zhang <ruifeng.zhang1@unisoc.com>
>
> The arm topology still parse from the MPIDR, but it is incomplete.  When
> the armv8.2 or above cpu runs kernel in EL1 with aarch32 mode, it will
> parse out the wrong topology.
>

Per my other email, isn't the problem that MPIDR can't be trusted to
properly represent the topology, and thus a new method of describing the
topology (cpu-map) has to be used?

  parent reply	other threads:[~2021-04-15 18:11 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 12:23 [PATCH v2 0/1] arm: topology: parse the topology from the dt Ruifeng Zhang
2021-04-14 12:23 ` Ruifeng Zhang
2021-04-14 12:23 ` [PATCH v2 1/1] " Ruifeng Zhang
2021-04-14 12:23   ` Ruifeng Zhang
2021-04-14 12:38   ` Ruifeng Zhang
2021-04-14 12:38     ` Ruifeng Zhang
2021-04-15 18:09   ` Valentin Schneider [this message]
2021-04-15 18:09     ` Valentin Schneider
2021-04-15 18:09 ` [PATCH v2 0/1] " Valentin Schneider
2021-04-15 18:09   ` Valentin Schneider
2021-04-15 20:10   ` Dietmar Eggemann
2021-04-15 20:10     ` Dietmar Eggemann
2021-04-16  7:47     ` Ruifeng Zhang
2021-04-16  7:47       ` Ruifeng Zhang
2021-04-16  9:32       ` Valentin Schneider
2021-04-16  9:32         ` Valentin Schneider
2021-04-16 10:39         ` Dietmar Eggemann
2021-04-16 10:39           ` Dietmar Eggemann
2021-04-16 10:47           ` Valentin Schneider
2021-04-16 10:47             ` Valentin Schneider
2021-04-16 11:04           ` Ruifeng Zhang
2021-04-16 11:04             ` Ruifeng Zhang
2021-04-16 17:00             ` Dietmar Eggemann
2021-04-16 17:00               ` Dietmar Eggemann
2021-04-19  2:55               ` Ruifeng Zhang
2021-04-19  2:55                 ` Ruifeng Zhang
2021-04-19 21:27                 ` Dietmar Eggemann
2021-04-19 21:27                   ` Dietmar Eggemann
2021-04-23  6:25                   ` Ruifeng Zhang
2021-04-23  6:25                     ` Ruifeng Zhang

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-all 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=871rbbmnbu.mognet@arm.com \
    --to=valentin.schneider@arm.com \
    --cc=a.p.zijlstra@chello.nl \
    --cc=dietmar.eggemann@arm.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=mingo@kernel.org \
    --cc=nianfu.bai@unisoc.com \
    --cc=rafael@kernel.org \
    --cc=ruifeng.zhang0110@gmail.com \
    --cc=ruifeng.zhang1@unisoc.com \
    --cc=sudeep.holla@arm.com \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.