From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754133AbeDZHUE (ORCPT ); Thu, 26 Apr 2018 03:20:04 -0400 Received: from thoth.sbs.de ([192.35.17.2]:44562 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753088AbeDZHUD (ORCPT ); Thu, 26 Apr 2018 03:20:03 -0400 Subject: Re: [PATCH 6/6] arm: Allow to enable PCI_DOMAINS manually To: Lorenzo Pieralisi Cc: Bjorn Helgaas , Linux Kernel Mailing List , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <4b97c00b9cd72f508aa27f0b58711d73de2cd397.1524582822.git.jan.kiszka@siemens.com> <20180425175446.GC21628@e107981-ln.cambridge.arm.com> From: Jan Kiszka Openpgp: preference=signencrypt Message-ID: Date: Thu, 26 Apr 2018 09:19:37 +0200 User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 In-Reply-To: <20180425175446.GC21628@e107981-ln.cambridge.arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018-04-25 19:54, Lorenzo Pieralisi wrote: > On Tue, Apr 24, 2018 at 05:13:42PM +0200, Jan Kiszka wrote: >> From: Jan Kiszka >> >> Required when running over Jailhouse, and there is already a physical >> host controller that Jailhouse does not intercept and rather adds a >> virtual one. That is the case for the Tegra TK1, e.g. >> >> Signed-off-by: Jan Kiszka >> --- >> arch/arm/Kconfig | 7 ++++++- >> 1 file changed, 6 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig >> index a7f8e7f4b88f..5f8190cb057d 100644 >> --- a/arch/arm/Kconfig >> +++ b/arch/arm/Kconfig >> @@ -1248,8 +1248,13 @@ config PCI >> VESA. If you have PCI, say Y, otherwise N. >> >> config PCI_DOMAINS >> - bool >> + bool "Support for multiple PCI domains" >> depends on PCI >> + help >> + Automatically enabled if the platform supports multiple PCI host >> + controllers. Say Y if running over a hypervisor like Jailhouse that >> + dynamically adds further host controllers while the system is >> + running. Say N otherwise. > > Alternatively, you could select it under PCI_HOST_GENERIC if that's all > you need in Jailhouse. Actually that's a change that makes sense anyway > I think. If that's preferred - will switch! Thanks, Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux