From patchwork Mon Oct 15 12:02:46 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 191550 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 C723C2C00AA for ; Mon, 15 Oct 2012 23:02:59 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752388Ab2JOMCw (ORCPT ); Mon, 15 Oct 2012 08:02:52 -0400 Received: from cantor2.suse.de ([195.135.220.15]:34192 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752635Ab2JOMCv (ORCPT ); Mon, 15 Oct 2012 08:02:51 -0400 Received: from relay1.suse.de (unknown [195.135.220.254]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id BFBE59A78E; Mon, 15 Oct 2012 14:02:50 +0200 (CEST) From: Alexander Graf To: KVM list Cc: kvm-ppc@vger.kernel.org Subject: [PATCH 2/2] KVM: PPC: Support eventfd Date: Mon, 15 Oct 2012 14:02:46 +0200 Message-Id: <1350302566-28889-3-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1350302566-28889-1-git-send-email-agraf@suse.de> References: <1350302566-28889-1-git-send-email-agraf@suse.de> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org In order to support the generic eventfd infrastructure on PPC, we need to call into the generic KVM in-kernel device mmio code. Signed-off-by: Alexander Graf --- arch/powerpc/kvm/Kconfig | 1 + arch/powerpc/kvm/Makefile | 4 +++- arch/powerpc/kvm/powerpc.c | 17 ++++++++++++++++- 3 files changed, 20 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 71f0cd9..4730c95 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -20,6 +20,7 @@ config KVM bool select PREEMPT_NOTIFIERS select ANON_INODES + select HAVE_KVM_EVENTFD config KVM_BOOK3S_HANDLER bool diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index c2a0863..cd89658 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -6,7 +6,8 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror ccflags-y := -Ivirt/kvm -Iarch/powerpc/kvm -common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o) +common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o \ + eventfd.o) CFLAGS_44x_tlb.o := -I. CFLAGS_e500_tlb.o := -I. @@ -76,6 +77,7 @@ kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HV) := \ kvm-book3s_64-module-objs := \ ../../../virt/kvm/kvm_main.o \ + ../../../virt/kvm/eventfd.o \ powerpc.o \ emulate.o \ book3s.o \ diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index deb0d59..900d8fc 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -314,6 +314,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_PPC_IRQ_LEVEL: case KVM_CAP_ENABLE_CAP: case KVM_CAP_ONE_REG: + case KVM_CAP_IOEVENTFD: r = 1; break; #ifndef CONFIG_KVM_BOOK3S_64_HV @@ -613,6 +614,13 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, vcpu->mmio_is_write = 0; vcpu->arch.mmio_sign_extend = 0; + if (!kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, + bytes, &run->mmio.data)) { + kvmppc_complete_mmio_load(vcpu, run); + vcpu->mmio_needed = 0; + return EMULATE_DONE; + } + return EMULATE_DO_MMIO; } @@ -622,8 +630,8 @@ int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, { int r; - r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); vcpu->arch.mmio_sign_extend = 1; + r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); return r; } @@ -661,6 +669,13 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, } } + if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, + bytes, &run->mmio.data)) { + kvmppc_complete_mmio_load(vcpu, run); + vcpu->mmio_needed = 0; + return EMULATE_DONE; + } + return EMULATE_DO_MMIO; }