archive mirror
 help / color / mirror / Atom feed
From: Mikael Pettersson <>
Subject: Re: [PATCH] NMI watchdog documentation
Date: Thu, 31 Jul 2003 00:53:00 +0200 (MEST)	[thread overview]
Message-ID: <> (raw)

On Wed, 30 Jul 2003 22:40:52 +0300, Ville Herva wrote:
>Ok, you got me confused (thankfully I didn't submit anything for inclusion
>yet. :)
>So... Should it be something like:
>+For x86-64, the needed APIC is always compiled in, and the NMI watchdog is
>+always enabled with perctr mode. Currently, mode=2 (local APIC) does not

always enabled with I/O-APIC mode.

>+work on x86-64. IO APIC mode (mode=1) is the default. Using NMI watchdog

Using local APIC

>+(mode=1) needs the first performance register, so you can't use it for


>+other purposes (such as high precision performance profiling.)

>(Is the last sentence only valid for x86-64?)

No, it's true for both x86 and x86-64. However, both oprofile
and the perfctr driver disable the local APIC NMI watchdog, so
the statement is only true for other drivers that don't do this.


             reply	other threads:[~2003-07-30 22:53 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-30 22:53 Mikael Pettersson [this message]
2003-07-31  5:44 ` [PATCH] NMI watchdog documentation Ville Herva
  -- strict thread matches above, loose matches on Subject: below --
2003-07-31 21:25 Mikael Pettersson
2003-07-30 19:20 Mikael Pettersson
2003-07-30 19:40 ` Ville Herva
2003-07-30 19:18 Mikael Pettersson
2003-07-29 10:37 Mikael Pettersson
2003-07-29 16:06 ` Andi Kleen
2003-07-29 17:53   ` Ville Herva
2003-07-23 17:43 Ville Herva
2003-07-28 17:53 ` Andi Kleen
2003-07-28 19:21   ` Ville Herva

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \

* 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).