From patchwork Tue Feb 7 07:17:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 724979 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vHbYb6Xpyz9s2P for ; Tue, 7 Feb 2017 18:28:51 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752618AbdBGH2s (ORCPT ); Tue, 7 Feb 2017 02:28:48 -0500 Received: from ozlabs.ru ([83.169.36.222]:41580 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752323AbdBGH2s (ORCPT ); Tue, 7 Feb 2017 02:28:48 -0500 Received: from vpl2.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id E4144120E3F; Tue, 7 Feb 2017 08:17:34 +0100 (CET) From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Cc: Alexey Kardashevskiy , Alex Williamson , David Gibson , Paul Mackerras , kvm-ppc@vger.kernel.org, kvm@vger.kernel.org Subject: [PATCH kernel v4 06/10] KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently Date: Tue, 7 Feb 2017 18:17:07 +1100 Message-Id: <20170207071711.28938-7-aik@ozlabs.ru> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170207071711.28938-1-aik@ozlabs.ru> References: <20170207071711.28938-1-aik@ozlabs.ru> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org It does not make much sense to have KVM in book3s-64 and not to have IOMMU bits for PCI pass through support as it costs little and allows VFIO to function on book3s KVM. Having IOMMU_API always enabled makes it unnecessary to have a lot of "#ifdef IOMMU_API" in arch/powerpc/kvm/book3s_64_vio*. With those ifdef's we could have only user space emulated devices accelerated (but not VFIO) which do not seem to be very useful. Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson --- arch/powerpc/kvm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 029be26b5a17..65a471de96de 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -67,6 +67,7 @@ config KVM_BOOK3S_64 select KVM_BOOK3S_64_HANDLER select KVM select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE + select SPAPR_TCE_IOMMU if IOMMU_SUPPORT ---help--- Support running unmodified book3s_64 and book3s_32 guest kernels in virtual machines on book3s_64 host processors.