From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rvN4w614gzDqQG for ; Wed, 20 Jul 2016 13:41:52 +1000 (AEST) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u6K3d1bq052202 for ; Tue, 19 Jul 2016 23:41:50 -0400 Received: from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148]) by mx0b-001b2d01.pphosted.com with ESMTP id 2496ecjmg6-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 19 Jul 2016 23:41:50 -0400 Received: from localhost by e23smtp06.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 20 Jul 2016 13:41:46 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 12ED62CE8056 for ; Wed, 20 Jul 2016 13:41:38 +1000 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u6K3fcmT19595368 for ; Wed, 20 Jul 2016 13:41:38 +1000 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u6K3fbnm015707 for ; Wed, 20 Jul 2016 13:41:37 +1000 From: Sam Bobroff To: linuxppc-dev@lists.ozlabs.org Cc: kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, david@gibson.dropbear.id.au, aik@ozlabs.ru, mpe@ellerman.id.au, agraf@suse.de, qemu-devel@nongnu.org, paulus@samba.org Subject: [PATCH v2 1/1] KVM: PPC: Introduce KVM_CAP_PPC_HTM Date: Wed, 20 Jul 2016 13:41:36 +1000 Message-Id: <7286403003b30fc87740f1c1d6cb67d8f8eaafd7.1468986094.git.sam.bobroff@au1.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Introduce a new KVM capability, KVM_CAP_PPC_HTM, that can be queried to determine if a PowerPC KVM guest should use HTM (Hardware Transactional Memory). This will be used by QEMU to populate the pa-features bits in the guest's device tree. Signed-off-by: Sam Bobroff --- v2: * Use CPU_FTR_TM_COMP instead of CPU_FTR_TM. * I didn't unbreak the line, as with the extra characters checkpatch will complain if I do. I did move the break to a more usual place. arch/powerpc/kvm/powerpc.c | 4 ++++ include/uapi/linux/kvm.h | 1 + 2 files changed, 5 insertions(+) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 02416fe..5ebc8ff 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -588,6 +588,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = 1; break; #endif + case KVM_CAP_PPC_HTM: + r = cpu_has_feature(CPU_FTR_TM_COMP) && + is_kvmppc_hv_enabled(kvm); + break; default: r = 0; break; diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 05ebf47..f421d0e 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -866,6 +866,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_ARM_PMU_V3 126 #define KVM_CAP_VCPU_ATTRIBUTES 127 #define KVM_CAP_MAX_VCPU_ID 128 +#define KVM_CAP_PPC_HTM 129 #ifdef KVM_CAP_IRQ_ROUTING -- 2.1.0