From: Scott Wood <scottwood@freescale.com>
To: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Cc: Wood Scott-B07421 <B07421@freescale.com>,
Zang Roy-R61911 <r61911@freescale.com>,
Bob Cochran <ppc@mindchasers.com>,
"linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
Dan Malek <ppc6dev@digitaldans.com>, Support <support@abatron.ch>
Subject: Re: [RFC] [PATCH] powerpc: Add MSR_DE to MSR_KERNEL
Date: Mon, 24 Jun 2013 19:51:00 -0500 [thread overview]
Message-ID: <20130625005100.GA22976@home.buserror.net> (raw)
In-Reply-To: <OF2715F7FE.447A7381-ONC1257A41.002F433E-C1257A41.002F5BFA@transmode.se>
On Fri, Jul 20, 2012 at 10:37:17AM +0200, Joakim Tjernlund wrote:
> Zang Roy-R61911 <r61911@freescale.com> wrote on 2012/07/20 10:27:52:
> >
> >
> >
> > > -----Original Message-----
> > > From: linuxppc-dev-bounces+tie-fei.zang=freescale.com@lists.ozlabs.org
> > > [mailto:linuxppc-dev-bounces+tie-fei.zang=freescale.com@lists.ozlabs.org]
> > > On Behalf Of Joakim Tjernlund
> > > Sent: Friday, June 01, 2012 6:36 AM
> > > To: Wood Scott-B07421
> > > Cc: linuxppc-dev@ozlabs.org; Dan Malek; Bob Cochran; Support
> > > Subject: Re: [RFC] [PATCH] powerpc: Add MSR_DE to MSR_KERNEL
> > >
> > > It just occurred to me that you guys have this already in your Linux SDK so
> > > it can't be that bad.
> > No. MSR_DE is ONLY added when using CW debug in SDK.
> > Roy
> >
>
> Yes, and I later found that user space debugging is busted if you turn on MSR_DE in
> kernel.
So, how should we handle the CONFIG_BDI_SWITCH patch? It seems like it
should at least have a warning in the kconfig help text that it breaks
userspace debugging (to the point of causing a kernel oops if it's
tried). Or maybe it can deselect CONFIG_PPC_ADV_DEBUG_REGS?
It'd also be nice to keep things like this, that are a consequence of how
external debug works on e500, separate from the Abatron-specific stuff.
-Scott
next prev parent reply other threads:[~2013-06-25 0:51 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 [this message]
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
[not found] ` <OF7810EBD9.B191A242-ONC1257A13.0031E9E3-C1257A13.00320D10@LocalDomain>
2012-07-11 14:24 ` Joakim Tjernlund
2012-07-11 14:45 ` Kumar Gala
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=20130625005100.GA22976@home.buserror.net \
--to=scottwood@freescale.com \
--cc=B07421@freescale.com \
--cc=joakim.tjernlund@transmode.se \
--cc=linuxppc-dev@ozlabs.org \
--cc=ppc6dev@digitaldans.com \
--cc=ppc@mindchasers.com \
--cc=r61911@freescale.com \
--cc=support@abatron.ch \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).