From: Jan Kiszka <jan.kiszka@domain.hid>
To: adeos-main <adeos-main@gna.org>
Subject: Re: [Adeos-main] [RFC][PATCH] x86-64: catch too large NR_CPUS
Date: Thu, 20 Dec 2007 12:37:59 +0100 [thread overview]
Message-ID: <476A5417.7090504@domain.hid> (raw)
In-Reply-To: <476A529B.1040006@domain.hid>
Jan Kiszka wrote:
> Hi,
>
> building Xenomai for an 8-way box and deriving its setup from an
> existing .config, I fortunately noticed some warning in ipipe.c. It
> pointed out an overflow in IPIPE_IRQMASK_VIRT when NR_CPUS gets too
> large. This causes NR_IRQS to explode, which then lets the virtual IRQ
> mask overflow.
More concrete: Too large meant CONFIG_NR_CPUS=128. You can still get
away with 64 - or just select what is physically there...
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
prev parent reply other threads:[~2007-12-20 11:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-20 11:31 [Adeos-main] [RFC][PATCH] x86-64: catch too large NR_CPUS Jan Kiszka
2007-12-20 11:37 ` Jan Kiszka [this message]
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=476A5417.7090504@domain.hid \
--to=jan.kiszka@domain.hid \
--cc=adeos-main@gna.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.