All of lore.kernel.org
 help / color / mirror / Atom feed
From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org, Fabio Estevam <festevam@gmail.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	Kevin Hilman <khilman@kernel.org>
Subject: Re: [CFT] Always enable SMP mode on MP capable CPUs
Date: Thu, 25 May 2017 15:48:00 +0100	[thread overview]
Message-ID: <20170525144800.GV23750@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20170524153847.GY10472@atomide.com>

On Wed, May 24, 2017 at 08:38:47AM -0700, Tony Lindgren wrote:
> * Russell King - ARM Linux <linux@armlinux.org.uk> [170519 10:19]:
> > We could expand the table to positively identify the SMP capable CPUs
> > and enable the SMP bit there, but it's going to add a lot of entries
> > there (one for each specific ARMv7 MP CPU) and is going to have to be
> > endlessly added to each time a new SMP CPU comes out.
> 
> Looks like commit e414690faa81 ("ARM: always enable SMP mode on SMP cores")
> causes booting to fail early at least on omap4430 duovero. It's a bit of
> a mystery as it is SMP.. And pandboard es (4460) and droid 4 (4430) work
> without the conditional write..
> 
> Partial revert like below seems to make it boot again.

Thanks for testing, I'll integrate your change, and it should be in
tonight's linux-next.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

WARNING: multiple messages have this Message-ID (diff)
From: linux@armlinux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [CFT] Always enable SMP mode on MP capable CPUs
Date: Thu, 25 May 2017 15:48:00 +0100	[thread overview]
Message-ID: <20170525144800.GV23750@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20170524153847.GY10472@atomide.com>

On Wed, May 24, 2017 at 08:38:47AM -0700, Tony Lindgren wrote:
> * Russell King - ARM Linux <linux@armlinux.org.uk> [170519 10:19]:
> > We could expand the table to positively identify the SMP capable CPUs
> > and enable the SMP bit there, but it's going to add a lot of entries
> > there (one for each specific ARMv7 MP CPU) and is going to have to be
> > endlessly added to each time a new SMP CPU comes out.
> 
> Looks like commit e414690faa81 ("ARM: always enable SMP mode on SMP cores")
> causes booting to fail early at least on omap4430 duovero. It's a bit of
> a mystery as it is SMP.. And pandboard es (4460) and droid 4 (4430) work
> without the conditional write..
> 
> Partial revert like below seems to make it boot again.

Thanks for testing, I'll integrate your change, and it should be in
tonight's linux-next.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

  reply	other threads:[~2017-05-25 14:48 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-18 10:52 [CFT] Always enable SMP mode on MP capable CPUs Russell King - ARM Linux
2017-05-18 18:09 ` Fabio Estevam
2017-05-19 17:07   ` Fabio Estevam
2017-05-19 17:15     ` Russell King - ARM Linux
2017-05-24 15:38       ` Tony Lindgren
2017-05-24 15:38         ` Tony Lindgren
2017-05-25 14:48         ` Russell King - ARM Linux [this message]
2017-05-25 14:48           ` Russell King - ARM Linux
2017-05-25 15:11           ` Tony Lindgren
2017-05-25 15:11             ` Tony Lindgren
2017-05-25 18:05             ` Russell King - ARM Linux
2017-05-25 18:05               ` Russell King - ARM Linux
2017-05-25 22:13               ` Tony Lindgren
2017-05-25 22:13                 ` Tony Lindgren
2017-05-26 11:22                 ` afzal mohammed
2017-05-26 11:22                   ` afzal mohammed
2017-05-27 13:22                   ` Russell King - ARM Linux
2017-05-27 13:22                     ` Russell King - ARM Linux
2017-05-31 14:39                     ` Tony Lindgren
2017-05-31 14:39                       ` Tony Lindgren
2017-05-31 14:59                       ` Russell King - ARM Linux
2017-05-31 14:59                         ` Russell King - ARM Linux
2017-05-31 15:07                         ` Tony Lindgren
2017-05-31 15:07                           ` Tony Lindgren
2017-05-24 15:50 ` afzal mohammed
2017-05-24 15:50   ` afzal mohammed
2017-05-25 16:15 ` Florian Fainelli
2017-05-25 16:56   ` Russell King - ARM Linux
2017-05-25 17:10     ` Tony Lindgren
2017-05-25 17:10       ` Tony Lindgren
2017-05-25 17:24     ` Florian Fainelli
2017-05-26  9:44 ` Vladimir Murzin

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=20170525144800.GV23750@n2100.armlinux.org.uk \
    --to=linux@armlinux.org.uk \
    --cc=festevam@gmail.com \
    --cc=khilman@kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-omap@vger.kernel.org \
    --cc=tony@atomide.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.