From: grundler@dsl2.external.hp.com (Grant Grundler)
To: Matthew Wilcox <willy@debian.org>
Cc: Randolph Chung <tausq@debian.org>,
John David Anglin <dave@hiauly1.hia.nrc.ca>,
carlos@baldric.uwo.ca, parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Re: Trap handler
Date: Mon, 9 Dec 2002 11:03:16 -0700 [thread overview]
Message-ID: <20021209180316.GA6635@dsl2.external.hp.com> (raw)
In-Reply-To: <20021209125416.F20336@parcelfarce.linux.theplanet.co.uk>
On Mon, Dec 09, 2002 at 12:54:16PM +0000, Matthew Wilcox wrote:
> x86 will potentially reschedule on successfully handling a page fault.
ok.
> softirqs seem to only get run if we're returning to userspace,
> unless we're switching tasks. That might be a bug in the x86 code.
ok.
> Judging from the use of cli & sti in the x86 asm, I would venture to
> suggest that the I bit should be cleared. It makes sense anyway --
> you can't expect interrupts to be disabled over a page fault.
The above two statements don't make sense to me.
Clearing I-bit (ie rsm) will disable interrupts.
The second sentence suggests the opposite.
Or did I read it wrong?
thanks,
grant
next prev parent reply other threads:[~2002-12-09 18:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20021208232601.GH21187@tausq.org>
2002-12-08 23:55 ` [parisc-linux] Re: Trap handler John David Anglin
2002-12-09 5:12 ` Randolph Chung
2002-12-09 6:19 ` Randolph Chung
2002-12-09 12:54 ` Matthew Wilcox
2002-12-09 18:03 ` Grant Grundler [this message]
2002-12-09 18:20 ` Matthew Wilcox
2002-12-09 18:41 ` Grant Grundler
2002-12-09 18:55 ` Matthew Wilcox
2002-12-09 16:18 ` John David Anglin
2002-12-09 16:31 ` John David Anglin
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=20021209180316.GA6635@dsl2.external.hp.com \
--to=grundler@dsl2.external.hp.com \
--cc=carlos@baldric.uwo.ca \
--cc=dave@hiauly1.hia.nrc.ca \
--cc=parisc-linux@lists.parisc-linux.org \
--cc=tausq@debian.org \
--cc=willy@debian.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.