Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1034051AbcJ1E0o (ORCPT ); Fri, 28 Oct 2016 00:26:44 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48829 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1030427AbcJ1E0Y (ORCPT ); Fri, 28 Oct 2016 00:26:24 -0400 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, Pan Xinhui Subject: [PATCH v6 11/11] Documentation: virtual: kvm: Support vcpu preempted check Date: Fri, 28 Oct 2016 04:11:27 -0400 X-Mailer: git-send-email 2.4.11 In-Reply-To: <1477642287-24104-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> References: <1477642287-24104-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16102804-0052-0000-0000-000001E055DF X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16102804-0053-0000-0000-000007151096 Message-Id: <1477642287-24104-12-git-send-email-xinhui.pan@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-10-28_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-1610280076 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1520 Lines: 42 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 --- 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 -- 2.4.11