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 1Qr9KZ-0003Gw-PR for garchives@archives.gentoo.org; Wed, 10 Aug 2011 14:00:23 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 3223621C0A8; Wed, 10 Aug 2011 14:00:10 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id D473821C03D for ; Wed, 10 Aug 2011 13:59:13 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 62B361B4062 for ; Wed, 10 Aug 2011 13:59:13 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Score: -3.266 X-Spam-Level: X-Spam-Status: No, score=-3.266 required=5.5 tests=[AWL=-0.667, BAYES_00=-2.599] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pOzI43JidWLy for ; Wed, 10 Aug 2011 13:59:06 +0000 (UTC) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by smtp.gentoo.org (Postfix) with ESMTP id 139521B4036 for ; Wed, 10 Aug 2011 13:59:05 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Qr9J4-0005qo-Ic for gentoo-user@gentoo.org; Wed, 10 Aug 2011 15:58:54 +0200 Received: from c-b877e655.012-53-73746f50.cust.bredbandsbolaget.se ([85.230.119.184]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 10 Aug 2011 15:58:50 +0200 Received: from che by c-b877e655.012-53-73746f50.cust.bredbandsbolaget.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 10 Aug 2011 15:58:50 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org From: che@chrekh.se Subject: [gentoo-user] Re: linux-headers-2.6.38 Date: Wed, 10 Aug 2011 15:58:38 +0200 Message-ID: <8662m5gygh.fsf@jane.chrekh.se> References: <86aabhh12r.fsf@jane.chrekh.se> 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 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: c-b877e655.012-53-73746f50.cust.bredbandsbolaget.se User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) Cancel-Lock: sha1:2Qi8ALPwYzYI1nUOmTx2dxsmgjI= X-Archives-Salt: X-Archives-Hash: 790ad2d6d67adb5c869bce9af9de6328 Pandu Poluan writes: > On Wed, Aug 10, 2011 at 20:02, wrote: >> Also, beware. If you recompile glibc withe NPTL_KERN_VER set, you can't >> boot with older kernels anymore. >> > > Can you explain what did you mean with "older kernels"? Kernels older > than a certain version, or a previously-compiled kernel on my system? > Older then the kernel you specified, previously-compiled kernels not older than that is still fine. Any executable linked to glibc will fail unconditionally with "FATAL: Kernel too old", including init. > Anyways, this is a fresh install, so I don't think I'll have any trouble. > > But will still appreciate a reference and/or explanation re: > NPTL_KERN_VER, though. glibc will be configured with --enable-kernel=2.6.38 The configure help says this; --enable-kernel=VERSION compile for compatibility with kernel not older than VERSION -- Christer