From patchwork Sun Dec 18 01:28:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 706755 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 3th60F2NVpz9vDc for ; Sun, 18 Dec 2016 12:29:17 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758709AbcLRB3Q (ORCPT ); Sat, 17 Dec 2016 20:29:16 -0500 Received: from ozlabs.ru ([83.169.36.222]:51256 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624AbcLRB3P (ORCPT ); Sat, 17 Dec 2016 20:29:15 -0500 Received: from vpl2.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 3CA30120E35; Sun, 18 Dec 2016 02:29:07 +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 v2 01/11] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Date: Sun, 18 Dec 2016 12:28:50 +1100 Message-Id: <20161218012900.18142-2-aik@ozlabs.ru> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20161218012900.18142-1-aik@ozlabs.ru> References: <20161218012900.18142-1-aik@ozlabs.ru> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org This adds a capability number for in-kernel support for VFIO on SPAPR platform. The capability will tell the user space whether in-kernel handlers of H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space must not attempt allocating a TCE table in the host kernel via the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests will not be passed to the user space which is desired action in the situation like that. Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson --- include/uapi/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 300ef255d1e0..810f74317987 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -870,6 +870,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_S390_USER_INSTR0 130 #define KVM_CAP_MSI_DEVID 131 #define KVM_CAP_PPC_HTM 132 +#define KVM_CAP_SPAPR_TCE_VFIO 133 #ifdef KVM_CAP_IRQ_ROUTING