From: Roland McGrath <roland@redhat.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>,
Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] hwbkpt: Hardware breakpoints (was Kwatch)
Date: Tue, 6 Mar 2007 19:49:31 -0800 (PST) [thread overview]
Message-ID: <20070307034932.09F5A1801C4@magilla.sf.frob.com> (raw)
In-Reply-To: Alan Stern's message of Tuesday, 6 March 2007 10:23:53 -0500 <Pine.LNX.4.44L0.0703061015100.3401-100000@iolanthe.rowland.org>
> > Yeah, I guess that's right. It should still return NOTIFY_STOP when
> > args->err has no other bits set, so notifiers aren't called with zero.
>
> In practice that might not work. On my machine, at least, reads of DR6
> return ones in all the reserved bit positions.
Does that mean asm("mov %1,%%dr6; mov %%dr6,%0" : "=r" (mask) : "r" (0));
puts in mask the set of reserved bits? We could collect that value at CPU
startup and mask it off args->err, then OR it back into vdr6.
Thanks,
Roland
next prev parent reply other threads:[~2007-03-07 3:49 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070207025008.1B11118005D@magilla.sf.frob.com>
2007-02-07 19:22 ` [PATCH] Kwatch: kernel watchpoints using CPU debug registers Alan Stern
2007-02-07 22:08 ` Bob Copeland
2007-02-09 10:21 ` Roland McGrath
2007-02-09 15:54 ` Alan Stern
2007-02-09 23:31 ` Roland McGrath
2007-02-10 4:32 ` Alan Stern
2007-02-18 3:03 ` Roland McGrath
2007-02-21 20:35 ` Alan Stern
2007-02-22 11:43 ` S. P. Prasanna
2007-02-23 2:19 ` Roland McGrath
2007-02-23 16:55 ` Alan Stern
2007-02-24 0:08 ` Roland McGrath
2007-03-02 17:19 ` [RFC] hwbkpt: Hardware breakpoints (was Kwatch) Alan Stern
2007-03-05 7:01 ` Roland McGrath
2007-03-05 13:36 ` Christoph Hellwig
2007-03-05 16:16 ` Alan Stern
2007-03-05 16:49 ` Christoph Hellwig
2007-03-05 22:04 ` Roland McGrath
2007-03-05 17:25 ` Alan Stern
2007-03-06 3:13 ` Roland McGrath
2007-03-06 15:23 ` Alan Stern
2007-03-07 3:49 ` Roland McGrath [this message]
2007-03-07 19:11 ` Alan Stern
2007-03-09 6:52 ` Roland McGrath
2007-03-09 18:40 ` Alan Stern
2007-03-13 8:00 ` Roland McGrath
2007-03-13 13:07 ` Alan Cox
2007-03-13 18:56 ` Alan Stern
2007-03-14 3:00 ` Roland McGrath
2007-03-14 19:11 ` Alan Stern
2007-03-28 21:39 ` Roland McGrath
2007-03-29 21:35 ` Alan Stern
2007-04-13 21:09 ` Alan Stern
2007-05-11 15:25 ` Alan Stern
2007-05-13 10:39 ` Roland McGrath
2007-05-14 15:42 ` Alan Stern
2007-05-14 21:25 ` Roland McGrath
2007-05-16 19:03 ` Alan Stern
2007-05-23 8:47 ` Roland McGrath
2007-06-01 19:39 ` Alan Stern
2007-06-14 6:48 ` Roland McGrath
2007-06-19 20:35 ` Alan Stern
2007-06-25 10:52 ` Roland McGrath
2007-06-25 15:36 ` Alan Stern
2007-06-26 20:49 ` Roland McGrath
2007-06-27 3:26 ` Alan Stern
2007-06-27 21:04 ` Roland McGrath
2007-06-29 3:00 ` Alan Stern
2007-07-11 6:59 ` Roland McGrath
2007-06-28 3:02 ` Roland McGrath
2007-06-25 11:32 ` Roland McGrath
2007-06-25 15:37 ` Alan Stern
2007-06-25 20:51 ` Alan Stern
2007-06-26 18:17 ` Roland McGrath
2007-06-27 2:43 ` Alan Stern
2007-05-17 20:39 ` Alan Stern
2007-03-16 21:07 ` Alan Stern
2007-03-22 19:44 ` Alan Stern
[not found] <20070628023100.E46AB4D05E6@magilla.localdomain>
2007-06-29 3:36 ` Alan Stern
2007-07-06 20:48 ` Alan Stern
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=20070307034932.09F5A1801C4@magilla.sf.frob.com \
--to=roland@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=prasanna@in.ibm.com \
--cc=stern@rowland.harvard.edu \
/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.