Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753326AbdDKOJL (ORCPT ); Tue, 11 Apr 2017 10:09:11 -0400 Received: from mga09.intel.com ([134.134.136.24]:9549 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751875AbdDKOJI (ORCPT ); Tue, 11 Apr 2017 10:09:08 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,185,1488873600"; d="scan'208";a="1118188164" Date: Tue, 11 Apr 2017 07:09:07 -0700 From: Andi Kleen To: "Kirill A. Shutemov" Cc: Ingo Molnar , Andy Lutomirski , "Kirill A. Shutemov" , Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Dave Hansen , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/8] x86/boot/64: Add support of additional page table level during early boot Message-ID: <20170411140907.GD4021@tassilo.jf.intel.com> References: <20170406140106.78087-1-kirill.shutemov@linux.intel.com> <20170406140106.78087-4-kirill.shutemov@linux.intel.com> <20170411070203.GA14621@gmail.com> <20170411105106.4zgbzuu4s4267zyv@node.shutemov.name> <20170411112845.GA15212@gmail.com> <20170411114616.otx2f6aw5lcvfc2o@black.fi.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170411114616.otx2f6aw5lcvfc2o@black.fi.intel.com> User-Agent: Mutt/1.8.0 (2017-02-23) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 494 Lines: 12 > I'll look closer (building proccess it's rather complicated), but my > understanding is that VDSO is stand-alone binary and doesn't really links > with the rest of the kernel, rather included as blob, no? > > Andy, may be you have an idea? There isn't any way I know of to directly link them together. The ELF format wasn't designed for that. You would need to merge blobs and then use manual jump vectors, like the 16bit startup code does. It would be likely complicated and ugly. -Andi