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From: Joakim Tjernlund <joakim.tjernlund@transmode.se>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Scott Wood <scottwood@freescale.com>,
	linuxppc-dev@ozlabs.org, Bob Cochran <ppc@mindchasers.com>,
	support@abatron.ch
Subject: Re: [RFC] [PATCH] powerpc: Add MSR_DE to MSR_KERNEL
Date: Mon, 4 Jun 2012 11:06:41 +0200	[thread overview]
Message-ID: <OF7810EBD9.B191A242-ONC1257A13.0031E9E3-C1257A13.00320D10@transmode.se> (raw)
In-Reply-To: <1338672076.7150.2.camel@pasglop>

Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote on 2012/06/02 23:21:16:
>
> On Sat, 2012-06-02 at 20:29 +0200, Joakim Tjernlund wrote:
> >
> > hmm, where does this go w.r.t the patch? Got the feeling that the
> > best thing is to just turn MSR:DE on and be done with it?
>
> Not unconditionally, we need to have a close look, that might be ok
> specifically for BookE 32-bit, it's certainly not ok for BookE 64-bit at
> this point.
>
> For now, I'm ok with a debug CONFIG_* option.
>
> Also do we know if MSR:DE has any performance impact on any CPU ? I know
> having DACs enabled has a major impact on some for example.

I just sent a new patch, named
  [PATCH] powerpc: Add MSR_DE to MSR_KERNEL
which will only add MSR_DE for booke under CONFIG_BDI_SWITCH

  parent reply	other threads:[~2012-06-04  9:06 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-30  7:43 [RFC] [PATCH] powerpc: Add MSR_DE to MSR_KERNEL Joakim Tjernlund
2012-05-30  7:59 ` Dan Malek
2012-05-30 12:08   ` Re[2]: " Abatron Support
2012-05-31  9:05     ` Joakim Tjernlund
2012-05-31  9:30       ` Re[4]: " Abatron Support
2012-05-31  9:56         ` Joakim Tjernlund
2012-05-31 17:47           ` Scott Wood
2012-05-31 21:38             ` Joakim Tjernlund
2012-05-31 21:43               ` Scott Wood
2012-05-31 22:14                 ` Joakim Tjernlund
2012-05-31 22:16                   ` Scott Wood
2012-05-31 22:33                     ` Joakim Tjernlund
2012-05-31 22:35                     ` Joakim Tjernlund
2012-07-20  8:27                       ` Zang Roy-R61911
2012-07-20  8:37                         ` Joakim Tjernlund
2013-06-25  0:51                           ` Scott Wood
2013-06-25  6:00                             ` Joakim Tjernlund
2013-06-26 21:42                               ` Scott Wood
2012-06-01  9:12       ` Re[2]: " Benjamin Herrenschmidt
2012-06-01 10:34         ` Joakim Tjernlund
2012-05-30 13:26 ` Bob Cochran
2012-06-01  9:14   ` Benjamin Herrenschmidt
2012-06-01 10:38     ` Joakim Tjernlund
2012-06-01 16:28     ` Scott Wood
2012-06-01 22:30       ` Benjamin Herrenschmidt
2012-06-01 22:42         ` Scott Wood
2012-06-01 23:24           ` Benjamin Herrenschmidt
2012-06-02 18:29             ` Joakim Tjernlund
2012-06-02 21:21               ` Benjamin Herrenschmidt
2012-06-03  9:20                 ` Joakim Tjernlund
2012-06-04  9:06                 ` Joakim Tjernlund [this message]
     [not found]                 ` <OF7810EBD9.B191A242-ONC1257A13.0031E9E3-C1257A13.00320D10@LocalDomain>
2012-07-11 14:24                   ` Joakim Tjernlund
2012-07-11 14:45                     ` Kumar Gala

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