From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Joakim Tjernlund <joakim.tjernlund@transmode.se>
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: Sun, 03 Jun 2012 07:21:16 +1000 [thread overview]
Message-ID: <1338672076.7150.2.camel@pasglop> (raw)
In-Reply-To: <OFF2E739FE.A96EBAF2-ONC1257A11.00655546-C1257A11.0065978F@transmode.se>
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.
Ben.
next prev parent reply other threads:[~2012-06-02 21:21 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 [this message]
2012-06-03 9:20 ` Joakim Tjernlund
2012-06-04 9:06 ` Joakim Tjernlund
[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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