From patchwork Wed Nov 2 09:08:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: xinhui X-Patchwork-Id: 9408505 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A2CBA60234 for ; Wed, 2 Nov 2016 05:14:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 94F8629E08 for ; Wed, 2 Nov 2016 05:14:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8972F29E09; Wed, 2 Nov 2016 05:14:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=2.0 tests=BAYES_00, DATE_IN_FUTURE_03_06, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 37ABB29E07 for ; Wed, 2 Nov 2016 05:14:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932221AbcKBFOc (ORCPT ); Wed, 2 Nov 2016 01:14:32 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:41306 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755513AbcKBFOa (ORCPT ); Wed, 2 Nov 2016 01:14:30 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uA25DRBi067808 for ; Wed, 2 Nov 2016 01:14:29 -0400 Received: from e23smtp04.au.ibm.com (e23smtp04.au.ibm.com [202.81.31.146]) by mx0b-001b2d01.pphosted.com with ESMTP id 26f50kd7ys-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 02 Nov 2016 01:14:29 -0400 Received: from localhost by e23smtp04.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 2 Nov 2016 15:14:22 +1000 Received: from d23relay07.au.ibm.com (d23relay07.au.ibm.com [9.190.26.37]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 3885E2BB0054; Wed, 2 Nov 2016 16:14:22 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay07.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id uA25EMqf20644078; Wed, 2 Nov 2016 16:14:22 +1100 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 uA25EJDe009117; Wed, 2 Nov 2016 16:14:22 +1100 Received: from ltcalpine2-lp13.aus.stglabs.ibm.com (ltcalpine2-lp13.aus.stglabs.ibm.com [9.40.195.196]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id uA25CnXp006036; Wed, 2 Nov 2016 16:14:14 +1100 From: Pan Xinhui To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux-foundation.org, linux-s390@vger.kernel.org, xen-devel-request@lists.xenproject.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, mingo@redhat.com, peterz@infradead.org, paulmck@linux.vnet.ibm.com, will.deacon@arm.com, kernellwp@gmail.com, jgross@suse.com, pbonzini@redhat.com, bsingharora@gmail.com, boqun.feng@gmail.com, borntraeger@de.ibm.com, rkrcmar@redhat.com, David.Laight@ACULAB.COM, dave@stgolabs.net, konrad.wilk@oracle.com, Pan Xinhui Subject: [PATCH v7 11/11] Documentation: virtual: kvm: Support vcpu preempted check Date: Wed, 2 Nov 2016 05:08:38 -0400 X-Mailer: git-send-email 2.4.11 In-Reply-To: <1478077718-37424-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> References: <1478077718-37424-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16110205-0012-0000-0000-000001DE17A1 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16110205-0013-0000-0000-0000065358B7 Message-Id: <1478077718-37424-12-git-send-email-xinhui.pan@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-11-02_02:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1611020096 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Commit ("x86, kvm: support vcpu preempted check") add one field "__u8 preempted" into struct kvm_steal_time. This field tells if one vcpu is running or not. It is zero if 1) some old KVM deos not support this filed. 2) the vcpu is not preempted. Other values means the vcpu has been preempted. Signed-off-by: Pan Xinhui Acked-by: Radim Krčmář Acked-by: Paolo Bonzini --- Documentation/virtual/kvm/msr.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/virtual/kvm/msr.txt b/Documentation/virtual/kvm/msr.txt index 2a71c8f..ab2ab76 100644 --- a/Documentation/virtual/kvm/msr.txt +++ b/Documentation/virtual/kvm/msr.txt @@ -208,7 +208,9 @@ MSR_KVM_STEAL_TIME: 0x4b564d03 __u64 steal; __u32 version; __u32 flags; - __u32 pad[12]; + __u8 preempted; + __u8 u8_pad[3]; + __u32 pad[11]; } whose data will be filled in by the hypervisor periodically. Only one @@ -232,6 +234,11 @@ MSR_KVM_STEAL_TIME: 0x4b564d03 nanoseconds. Time during which the vcpu is idle, will not be reported as steal time. + preempted: indicate the VCPU who owns this struct is running or + not. Non-zero values mean the VCPU has been preempted. Zero + means the VCPU is not preempted. NOTE, it is always zero if the + the hypervisor doesn't support this field. + MSR_KVM_EOI_EN: 0x4b564d04 data: Bit 0 is 1 when PV end of interrupt is enabled on the vcpu; 0 when disabled. Bit 1 is reserved and must be zero. When PV end of