From patchwork Wed Aug 10 04:24:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Mackerras X-Patchwork-Id: 657595 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 3s8J2M64wWz9sDf for ; Wed, 10 Aug 2016 14:24:27 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750772AbcHJEY1 (ORCPT ); Wed, 10 Aug 2016 00:24:27 -0400 Received: from ozlabs.org ([103.22.144.67]:40075 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724AbcHJEY0 (ORCPT ); Wed, 10 Aug 2016 00:24:26 -0400 Received: by ozlabs.org (Postfix, from userid 1003) id 3s8J2J6GYdz9sDf; Wed, 10 Aug 2016 14:24:24 +1000 (AEST) Date: Wed, 10 Aug 2016 14:24:19 +1000 From: Paul Mackerras To: kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Subject: [PATCH 2/2] KVM: PPC: Implement kvm_arch_intc_initialized() for PPC Message-ID: <20160810042419.GB6572@oak.ozlabs.ibm.com> References: <20160810042332.GA6572@oak.ozlabs.ibm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20160810042332.GA6572@oak.ozlabs.ibm.com> User-Agent: Mutt/1.6.0 (2016-04-01) Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org It doesn't make sense to create irqfds for a VM that doesn't have in-kernel interrupt controller emulation. There is an existing interface for architecture code to tell the irqfd code whether or not any interrupt controller has been initialized, called kvm_arch_intc_initialized(), so let's implement that for powerpc. Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/kvm_host.h | 2 ++ arch/powerpc/kvm/powerpc.c | 13 +++++++++++++ 2 files changed, 15 insertions(+) diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index ec35af3..e36ce0c 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -43,6 +43,8 @@ #include #define KVM_MAX_VCPU_ID (threads_per_subcore * KVM_MAX_VCORES) +#define __KVM_HAVE_ARCH_INTC_INITIALIZED + #ifdef CONFIG_KVM_MMIO #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 #endif diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 6ce40dd..ab2b3d5 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -1167,6 +1167,19 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, return r; } +bool kvm_arch_intc_initialized(struct kvm *kvm) +{ +#ifdef CONFIG_KVM_MPIC + if (kvm->arch.mpic) + return true; +#endif +#ifdef CONFIG_KVM_XICS + if (kvm->arch.xics) + return true; +#endif + return false; +} + int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, struct kvm_mp_state *mp_state) {