Message ID | 1478077718-37424-10-git-send-email-xinhui.pan@linux.vnet.ibm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Violators will be prosecuted; Wed, 2 Nov 2016 15:14:11 +1000 Received: from d23relay09.au.ibm.com (d23relay09.au.ibm.com [9.185.63.181]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 874A93578057; Wed, 2 Nov 2016 16:14:10 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id uA25EAIB1835338; Wed, 2 Nov 2016 16:14:10 +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 uA25E8u0008746; Wed, 2 Nov 2016 16:14:10 +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 uA25CnXn006036; Wed, 2 Nov 2016 16:14:03 +1100 From: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> 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 Date: Wed, 2 Nov 2016 05:08:36 -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> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16110205-0004-0000-0000-000001AE1F04 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16110205-0005-0000-0000-000008FF6495 Message-Id: <1478077718-37424-10-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 Cc: kernellwp@gmail.com, jgross@suse.com, dave@stgolabs.net, David.Laight@ACULAB.COM, rkrcmar@redhat.com, peterz@infradead.org, benh@kernel.crashing.org, bsingharora@gmail.com, will.deacon@arm.com, Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>, borntraeger@de.ibm.com, mingo@redhat.com, paulus@samba.org, mpe@ellerman.id.au, pbonzini@redhat.com, paulmck@linux.vnet.ibm.com, boqun.feng@gmail.com Subject: [Xen-devel] [PATCH v7 09/11] x86, kernel/kvm.c: support vcpu preempted check X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion <xen-devel.lists.xen.org> List-Unsubscribe: <https://lists.xen.org/cgi-bin/mailman/options/xen-devel>, <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe> List-Post: <mailto:xen-devel@lists.xen.org> List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help> List-Subscribe: <https://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xen.org?subject=subscribe> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org> X-Virus-Scanned: ClamAV using ClamSMTP |
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index edbbfc8..0b48dd2 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -415,6 +415,15 @@ void kvm_disable_steal_time(void) wrmsr(MSR_KVM_STEAL_TIME, 0, 0); } +static bool kvm_vcpu_is_preempted(int cpu) +{ + struct kvm_steal_time *src; + + src = &per_cpu(steal_time, cpu); + + return !!src->preempted; +} + #ifdef CONFIG_SMP static void __init kvm_smp_prepare_boot_cpu(void) { @@ -471,6 +480,9 @@ void __init kvm_guest_init(void) if (kvm_para_has_feature(KVM_FEATURE_STEAL_TIME)) { has_steal_clock = 1; pv_time_ops.steal_clock = kvm_steal_clock; +#ifdef CONFIG_PARAVIRT_SPINLOCKS + pv_lock_ops.vcpu_is_preempted = kvm_vcpu_is_preempted; +#endif } if (kvm_para_has_feature(KVM_FEATURE_PV_EOI))