From patchwork Tue Feb 7 07:17:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 724960 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 3vHbRm4Kdtz9s7p for ; Tue, 7 Feb 2017 18:23:48 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752043AbdBGHXr (ORCPT ); Tue, 7 Feb 2017 02:23:47 -0500 Received: from ozlabs.ru ([83.169.36.222]:39660 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752035AbdBGHXr (ORCPT ); Tue, 7 Feb 2017 02:23:47 -0500 Received: from vpl2.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id DB35B120E3E; Tue, 7 Feb 2017 08:17:31 +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 05/10] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Date: Tue, 7 Feb 2017 18:17:06 +1100 Message-Id: <20170207071711.28938-6-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 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 cac48eda1075..a2c9bb5a0ead 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -871,6 +871,7 @@ 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