From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Nathan Lynch <nathanl@austin.ibm.com>,
Andrew Morton <akpm@osdl.org>, Paul Mackerras <paulus@samba.org>,
Anton Blanchard <anton@samba.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PPC64 mmu_context_init needs to run earlier
Date: Wed, 03 Nov 2004 10:35:00 +1100 [thread overview]
Message-ID: <1099438500.20295.47.camel@gaston> (raw)
In-Reply-To: <Pine.LNX.4.58.0411021406010.2187@ppc970.osdl.org>
> That said, maybe the problem is that we shouldn't even get far enough into
> the fork() logic to ever get into a new MMU context if driver_init ends up
> being called before we're ready.
Agreed. I chatted with Andrew about this, and I think we need
call_usermodehelper to be in a "plugged" state during boot, where it
queues up events but doesn't exec's userland. It remains to be decided
at what point during boot (during initcalls ? after initcalls) we can
"unplug" it tho...
I think it's definitely bogus to try to run userland in the middle of
arch_initcall's....
We need this plug/unplug logic (as I wrote separately to linux-pm) for
suspend as well, since we can't affort calling userlands once we have
started suspending devices (and frozen userland).
Ben.
next prev parent reply other threads:[~2004-11-03 0:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-02 5:11 [PATCH] PPC64 mmu_context_init needs to run earlier Paul Mackerras
2004-11-02 6:13 ` Andrew Morton
2004-11-02 21:57 ` Nathan Lynch
2004-11-02 22:10 ` Linus Torvalds
2004-11-02 23:35 ` Benjamin Herrenschmidt [this message]
2004-11-03 0:08 ` Nathan Lynch
2004-11-03 23:04 ` Andrew Morton
2004-11-04 2:53 ` Paul Mackerras
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=1099438500.20295.47.camel@gaston \
--to=benh@kernel.crashing.org \
--cc=akpm@osdl.org \
--cc=anton@samba.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nathanl@austin.ibm.com \
--cc=paulus@samba.org \
--cc=torvalds@osdl.org \
/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.