Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966151Ab3DRIbR (ORCPT ); Thu, 18 Apr 2013 04:31:17 -0400 Received: from mail-la0-f44.google.com ([209.85.215.44]:54737 "EHLO mail-la0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966067Ab3DRIbO (ORCPT ); Thu, 18 Apr 2013 04:31:14 -0400 MIME-Version: 1.0 In-Reply-To: References: <1366264344-28025-1-git-send-email-pranavkumar@linaro.org> From: Peter Maydell Date: Thu, 18 Apr 2013 09:30:52 +0100 Message-ID: Subject: Re: [RFC] arm64: Early printk support for virtio-mmio console devices. To: Marc Zyngier Cc: PranavkumarSawargaonkar , linaro-kernel@lists.linaro.org, patches@linaro.org, linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 766 Lines: 18 On 18 April 2013 07:49, Marc Zyngier wrote: > If you need an early console, why not simply wire the 8250 emulation in > kvmtool to be useable from the MMIO bus? I reckon this would solve your > problem in a more elegant way... The other approach I thought of would be something involving defining a hypercall interface for console I/O, in the same way that we have hypercalls for "start cpu"/"stop cpu"/etc. Is there any mileage in considering that approach, or is it a non-starter? thanks -- PMM -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/