From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Borntraeger Subject: [PATCH 4/4] kvm-s390: onereg for timer related registers Date: Tue, 15 May 2012 14:15:28 +0200 Message-ID: <1337084128-38219-5-git-send-email-borntraeger@de.ibm.com> References: <1337084128-38219-1-git-send-email-borntraeger@de.ibm.com> Cc: Carsten Otte , Alexander Graf , Jens Freimann , Cornelia Huck , Heiko Carstens , Martin Schwidefsky , Heinz Graalfs , KVM , "Jason J. herne" , Christian Borntraeger To: Avi Kivity , Marcelo Tossati Return-path: Received: from e06smtp11.uk.ibm.com ([195.75.94.107]:50811 "EHLO e06smtp11.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932424Ab2EOMPf (ORCPT ); Tue, 15 May 2012 08:15:35 -0400 Received: from /spool/local by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 15 May 2012 13:15:33 +0100 Received: from d06av02.portsmouth.uk.ibm.com (d06av02.portsmouth.uk.ibm.com [9.149.37.228]) by d06nrmr1806.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q4FCFUsP2543840 for ; Tue, 15 May 2012 13:15:30 +0100 Received: from d06av02.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q4FCFT7n000507 for ; Tue, 15 May 2012 06:15:30 -0600 In-Reply-To: <1337084128-38219-1-git-send-email-borntraeger@de.ibm.com> Sender: kvm-owner@vger.kernel.org List-ID: From: "Jason J. herne" Enhance the KVM ONE_REG capability within S390 to allow getting/setting the following special cpu registers: clock comparator and the cpu timer. These are needed for migration. Signed-off-by: Jason J. herne Signed-off-by: Christian Borntraeger --- arch/s390/include/asm/kvm.h | 2 ++ arch/s390/kvm/kvm-s390.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h index 53a5372..bdcbe0f 100644 --- a/arch/s390/include/asm/kvm.h +++ b/arch/s390/include/asm/kvm.h @@ -55,4 +55,6 @@ struct kvm_sync_regs { #define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1) #define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2) +#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3) +#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4) #endif diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index cc4c013..664766d 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -454,6 +454,14 @@ static int kvm_arch_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, r = put_user(vcpu->arch.sie_block->epoch, (u64 __user *)reg->addr); break; + case KVM_REG_S390_CPU_TIMER: + r = put_user(vcpu->arch.sie_block->cputm, + (u64 __user *)reg->addr); + break; + case KVM_REG_S390_CLOCK_COMP: + r = put_user(vcpu->arch.sie_block->ckc, + (u64 __user *)reg->addr); + break; default: break; } @@ -475,6 +483,14 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, r = get_user(vcpu->arch.sie_block->epoch, (u64 __user *)reg->addr); break; + case KVM_REG_S390_CPU_TIMER: + r = get_user(vcpu->arch.sie_block->cputm, + (u64 __user *)reg->addr); + break; + case KVM_REG_S390_CLOCK_COMP: + r = get_user(vcpu->arch.sie_block->ckc, + (u64 __user *)reg->addr); + break; default: break; } -- 1.7.10.2