From owner-freebsd-stable@FreeBSD.ORG Wed Nov 6 20:50:02 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 1B571DDB; Wed, 6 Nov 2013 20:50:02 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-qa0-x22e.google.com (mail-qa0-x22e.google.com [IPv6:2607:f8b0:400d:c00::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 771B32CFA; Wed, 6 Nov 2013 20:50:01 +0000 (UTC) Received: by mail-qa0-f46.google.com with SMTP id j7so2644782qaq.19 for ; Wed, 06 Nov 2013 12:50:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=3teYlZqHAsIMC5EWFQwMlb2g90Ss5Vmxq3I2k3p0fU0=; b=hW0czyFJcsxBukrDtDB46oL+oJsKJBlHF0zOsx8fkEx4q0vg6sSUoZcun5fx3DM3gE XDfULlLux52gZyuqYMEBb6D+2gLBcVKz4QNMwisIeFLVWKoZo8WaHiAiZ4QyR9NvKfvG tJ3bn6furnwyHsPU3RJXJcp1D6BaJWNg94xRiUKDhX/aU8wI4pl/uH904zaesV2SehP9 OMbLn5/g6OHcnP6/yg4Hm4BomL+r03QjXWdEU92SwNbIupMTTu5p4dj7dxJJ/QQklE92 Bsgj+hbf1CC0z9KTKUpIX3UshiP9OrotVkvTTYMZocWXK94Q5l8N+r2XkPyM7AO5kFJN tkgQ== MIME-Version: 1.0 X-Received: by 10.224.63.199 with SMTP id c7mr8727497qai.74.1383771000640; Wed, 06 Nov 2013 12:50:00 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.224.207.66 with HTTP; Wed, 6 Nov 2013 12:50:00 -0800 (PST) In-Reply-To: <201311061229.01023.jhb@freebsd.org> References: <201311061229.01023.jhb@freebsd.org> Date: Wed, 6 Nov 2013 12:50:00 -0800 X-Google-Sender-Auth: zStstEVnx6bJ4rwmA28_pXoOfAk Message-ID: Subject: Re: [10-STABLE, 11-CURRENT] something wrong between cam and eventtimer or geom and eventtimer From: Adrian Chadd To: John Baldwin Content-Type: text/plain; charset=ISO-8859-1 Cc: Davide Italiano , FreeBSD Stable Mailing List , "current@freebsd.org" , Alexander Motin , Oliver Pinter , freebsd-current X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Nov 2013 20:50:02 -0000 .. the main reason to use machdep.idle=hlt is that it is a different code path. But to ensure you're always going via the hlt codepath, you _first_ have to disable mwait. The idle code first decides whether to run mwait or , then if it doesn't choose mwait, it chooses machdep.idle. That's why you first have to disable idle_wait. -adrian