From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751992AbcADPQU (ORCPT ); Mon, 4 Jan 2016 10:16:20 -0500 Received: from mout.kundenserver.de ([217.72.192.75]:49321 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751590AbcADPQR (ORCPT ); Mon, 4 Jan 2016 10:16:17 -0500 From: Arnd Bergmann To: linux-arm-kernel@lists.infradead.org Cc: Andre Przywara , Russell King , alison.wang@freescale.com, marc.zyngier@arm.com, linux-kernel@vger.kernel.org, christoffer.dall@linaro.org, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH 2/2] arm: configs: add kvm_defconfig Date: Mon, 04 Jan 2016 16:15:32 +0100 Message-ID: <4522790.HLBFMYIalT@wuerfel> User-Agent: KMail/4.11.5 (Linux/3.16.0-10-generic; KDE/4.11.5; x86_64; ; ) In-Reply-To: <1451919034-12846-3-git-send-email-andre.przywara@arm.com> References: <1451919034-12846-1-git-send-email-andre.przywara@arm.com> <1451919034-12846-3-git-send-email-andre.przywara@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K0:pidVI3fPZ6WEPGzhcoR/uGzk2a/NfXa9UxaX8H9bBBpi1PMdun4 Y44bUVbqn0PFbjYBKsWYci1sPl9ZRn6xlgF4RKEHjK7CivrIzVIBg0jnbSsp9ca7s4OXfdu UKWPvY3YdfpwxKqSisZZ97JvP3AjVaakGDIGwX+LEbKPYV65Zl6aZ76dBBvGrzUwrm63Ima q2zIIQkfhPlZRYgm6GAUw== X-UI-Out-Filterresults: notjunk:1;V01:K0:zlcqb7Ih/MU=:/H5jx9YaY8Z1ELpczNEYCl ZDfCozmhCTYyTdLQSXvO/EPymfxkxQi0SwuTFfHTZO9v/4+3kk0FLMUYtIQ3+I94sIz8kjd6a GiQsb4yune3ujT/nJkMw9Z1WQ9cJFUSBWttV52mOoPuWxBHrZBkei7eHQX1qYFzgciySASudG wGd9dNbbHKT79gXL+9zNcD9LQCmA4bW1+IvIVwA6fyG4kZvCxB4R4sqXuL+kDmqqKBjTyqaIk EQu/ndocm8U+KhXl2jPcOWjS5l4ct7/L1JN3XX14/Xaq4tNL0slQVmQZdPfnIZT2/6kCGtMmR 0zSUznmm1+s7SdmBNEIuGiAwFqdBVCzQRE8sFKaqpO7su7CgGXdCJBlK88idqYMo1b5zRaIFD 6KL4D5sgM2/9+5/EztOvYlhyxlxDn6e1Vi+QPwDk0w6zzZQrZepVE3Eyvm78bK03Xt2WModyF T4Q4HnXk4sSWqvQaCbmExpLgVFglazK6lSC5ZzZ8TlmYw+M4qgyJlf4KBo8eO4c9UJuDFrZ7Q 9eQuyK9CRRuFTrrIo+iH6W87waxl2fbgnz6AeFmavLCogsBp6x77OWcGMlMH/2JgpRJY1fCgt Vh9YOK9B4gFVvLjtu7Fnt2V8vG7wICW7yAD1ukzctGyUbnPOXXOjP90htyYKTKa8VBnRsncDs SVNdP6jiAAViPxaJX2whhT/8MmDKYiWU//SXHrh5kBEXZayY2yCDHGF/4BXNFqJC6PJUrnLD8 /+qxtfAmVPJ+6ofC Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 04 January 2016 14:50:34 Andre Przywara wrote: > This new config enables KVM (and thus LPAE) on top of > multi_v7_defconfig. This creates a kernel that can _host_ KVM guests, > for guests a multi_v7_defconfig with virtio drivers is sufficient. > Since LPAE kernels are not compatible with non-LPAE capable hardware, > this has to be separate from the existing multi_v7_defconfig. > > The purpose of this new defconfig is both to simplify creation of KVM > host kernels as well as to give the LPAE option some better testing > coverage, as the enlarged dma_addr_t and phys_addr_t types create some > headache to some drivers. > > Signed-off-by: Andre Przywara > I agree about the purpose, but I want something better here: * Use config fragments to just set the few extra options that we can't enable otherwise, and have a shared config file with the normal multi_v7. There is still an ongoing question about big-endian defconfig, which has exactly the same problem, and we should have a common approach for all combinations. We might also want to do this in a way that lets us build v6/v6k/v7/v7ve/v8 kernels in big-endian and little-endian all from the same defconfig file, with the set of platforms getting smaller as we go to higher arch levels. * I really want to see the ARMv7VE dependencies sorted out. Arnd