From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1OFcG4-0007wd-6s for garchives@archives.gentoo.org; Sat, 22 May 2010 00:08:04 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 51EB9E084F; Sat, 22 May 2010 00:07:32 +0000 (UTC) Received: from mail-vw0-f53.google.com (mail-vw0-f53.google.com [209.85.212.53]) by pigeon.gentoo.org (Postfix) with ESMTP id 23D52E084F for ; Sat, 22 May 2010 00:07:32 +0000 (UTC) Received: by vws17 with SMTP id 17so291067vws.40 for ; Fri, 21 May 2010 17:07:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=rjqBIxvCgzo4L6b+X8FxXCiF6Gty4FXqEgOVFMC/mJ8=; b=NMkRJWDp5D/6jM+F3KTP35ZiJy/hLFO+6DZFwmuQMv51XxOfAcUDfCoDGD8cvZMDV/ uSCYmf/VirhuMKS9l+JB47JGjtrSGpxiEAPu+oON4l8roCPPBnzHLlel1yfwYyRjMk4K h/Unu053nxdiuNyzuOZh2Ux37jDYuZOFMkC6E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=q1AzcLoHPSEO9MMfjPUsXCH6ydx8TwwzO8HNOW90nQUWBbZogHL/Tbm0yD3sYvf1DU +q2CPgnGYVKNjrU7nyrq6ImOuGNcXCD/oOGuMRKsFBdbYa/s/J1mwzo5RiJQAMTOkltA AQgCBiw+oS6S6FHwpSLWUwkOzoMMMADrk+Fc4= Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.220.108.228 with SMTP id g36mr1562865vcp.26.1274486851838; Fri, 21 May 2010 17:07:31 -0700 (PDT) Received: by 10.220.86.198 with HTTP; Fri, 21 May 2010 17:07:31 -0700 (PDT) In-Reply-To: References: <201005212220.10605.volkerarmin@googlemail.com> <201005212241.19626.volkerarmin@googlemail.com> Date: Fri, 21 May 2010 17:07:31 -0700 Message-ID: Subject: Re: [gentoo-user] Preventing a shared interrupt From: Grant To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 919d9b51-444a-40f1-9112-56e4132356e4 X-Archives-Hash: 602c33ed1ebb6355768550cda99c64e0 >>>> > if your mobo does not supporting re-assigning interrupts: you can't. >>>> >>>> Would that be done in the BIOS? =A0There is a list of interrupts in th= e >>>> BIOS and I can select either "Unassigned" or "Reserved" I think. =A0Wh= at >>>> affect will reserving an interrupt have? >>>> >>>> - Grant >>> >>> I really don't know. Ask the support of your vendor ;) >> >> Fair enough. =A0Can you tell me why a motherboard would assign 2 devices >> to the same IRQ when there are obviously many free ones? =A0Is it just >> bad implementation? > > Looks like you have MSI support, so probably your hardware isn't > ancient enough for interrupt sharing to be a problem in the first > place. OK. Do higher numbered IRQ's have priority over lower numbered ones? I'm starting a new project where I'll build a super-minimal Gentoo system and I'm trying to learn as much as I can about optimizing for performance. - Grant