From nobody Mon Feb 9 08:28:05 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1533820485106458.69893799734984; Thu, 9 Aug 2018 06:14:45 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A4F5A3002C88; Thu, 9 Aug 2018 13:14:41 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6B4341902D; Thu, 9 Aug 2018 13:14:41 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 1873E1841C5A; Thu, 9 Aug 2018 13:14:41 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w79DERxt009390 for ; Thu, 9 Aug 2018 09:14:27 -0400 Received: by smtp.corp.redhat.com (Postfix) id 0F1F52142F22; Thu, 9 Aug 2018 13:14:27 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5F0962142F20; Thu, 9 Aug 2018 13:14:26 +0000 (UTC) From: Vitaly Kuznetsov To: libvir-list@redhat.com Date: Thu, 9 Aug 2018 15:14:21 +0200 Message-Id: <20180809131421.24398-4-vkuznets@redhat.com> In-Reply-To: <20180809131421.24398-1-vkuznets@redhat.com> References: <20180809131421.24398-1-vkuznets@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-loop: libvir-list@redhat.com Cc: Roman Kagan Subject: [libvirt] [PATCH 3/3] conf: qemu: add support for Hyper-V PV TLB flush X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Thu, 09 Aug 2018 13:14:42 +0000 (UTC) X-ZohoMail: RDMRC_0 RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Qemu-3.0 supports Hyper-V-style PV TLB flush, Windows guests can benefit from this feature as KVM knows which vCPUs are not currently scheduled (and thus don't require any immediate action). Signed-off-by: Vitaly Kuznetsov --- docs/formatdomain.html.in | 7 +++++++ docs/schemas/domaincommon.rng | 5 +++++ src/conf/domain_conf.c | 6 +++++- src/conf/domain_conf.h | 1 + src/cpu/cpu_x86.c | 3 +++ src/cpu/cpu_x86_data.h | 1 + src/qemu/qemu_command.c | 1 + src/qemu/qemu_parse_command.c | 1 + src/qemu/qemu_process.c | 1 + tests/qemuxml2argvdata/hyperv-off.xml | 1 + tests/qemuxml2argvdata/hyperv.args | 2 +- tests/qemuxml2argvdata/hyperv.xml | 1 + tests/qemuxml2xmloutdata/hyperv-off.xml | 1 + tests/qemuxml2xmloutdata/hyperv.xml | 1 + 14 files changed, 30 insertions(+), 2 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index de0993696e..c37a4389dc 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1939,6 +1939,7 @@ <vendor_id state=3D'on' value=3D'KVM Hv'/> <frequencies state=3D'on'/> <reenlightenment state=3D'on'/> + <tlbflush state=3D'on'/> </hyperv> <kvm> <hidden state=3D'on'/> @@ -2073,6 +2074,12 @@ on, off 4.7.0 (QEMU 3.0) + + tlbflush + Enable PV TLB flush support + on, off + 4.7.0 (QEMU 3.0) +
pvspinlock
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index b2a1ebfa3f..eab2618e51 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -5726,6 +5726,11 @@ + + + + + diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index e2154b5bf7..f32bbd760c 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -171,7 +171,8 @@ VIR_ENUM_IMPL(virDomainHyperv, VIR_DOMAIN_HYPERV_LAST, "reset", "vendor_id", "frequencies", - "reenlightenment") + "reenlightenment", + "tlbflush") =20 VIR_ENUM_IMPL(virDomainKVM, VIR_DOMAIN_KVM_LAST, "hidden") @@ -20021,6 +20022,7 @@ virDomainDefParseXML(xmlDocPtr xml, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: break; =20 case VIR_DOMAIN_HYPERV_SPINLOCKS: @@ -22207,6 +22209,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDefP= tr src, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: if (src->hyperv_features[i] !=3D dst->hyperv_features[i]) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("State of HyperV enlightenment " @@ -27859,6 +27862,7 @@ virDomainDefFormatInternal(virDomainDefPtr def, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: break; =20 case VIR_DOMAIN_HYPERV_SPINLOCKS: diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 8fa5002985..1287e862fc 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1793,6 +1793,7 @@ typedef enum { VIR_DOMAIN_HYPERV_VENDOR_ID, VIR_DOMAIN_HYPERV_FREQUENCIES, VIR_DOMAIN_HYPERV_REENLIGHTENMENT, + VIR_DOMAIN_HYPERV_TLBFLUSH, =20 VIR_DOMAIN_HYPERV_LAST } virDomainHyperv; diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c index 7a48b78eb9..7fa84f6014 100644 --- a/src/cpu/cpu_x86.c +++ b/src/cpu/cpu_x86.c @@ -113,6 +113,8 @@ KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_FREQUENCIES, 0x40000003, 0x00000800); KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_REENLIGHTENMENT, 0x40000003, 0x00002000); +KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_TLBFLUSH, + 0x40000004, 0x00000004); =20 static virCPUx86Feature x86_kvm_features[] =3D { @@ -135,6 +137,7 @@ static virCPUx86Feature x86_kvm_features[] =3D KVM_FEATURE(VIR_CPU_x86_KVM_HV_RESET), KVM_FEATURE(VIR_CPU_x86_KVM_HV_FREQUENCIES), KVM_FEATURE(VIR_CPU_x86_KVM_HV_REENLIGHTENMENT), + KVM_FEATURE(VIR_CPU_x86_KVM_HV_TLBFLUSH), }; =20 typedef struct _virCPUx86Model virCPUx86Model; diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h index a810c64fc9..090a21156f 100644 --- a/src/cpu/cpu_x86_data.h +++ b/src/cpu/cpu_x86_data.h @@ -65,6 +65,7 @@ struct _virCPUx86CPUID { # define VIR_CPU_x86_KVM_HV_RESET "__kvm_hv_reset" # define VIR_CPU_x86_KVM_HV_FREQUENCIES "__kvm_hv_frequencies" # define VIR_CPU_x86_KVM_HV_REENLIGHTENMENT "__kvm_hv_reenlightenment" +# define VIR_CPU_x86_KVM_HV_TLBFLUSH "__kvm_hv_tlbflush" =20 =20 # define VIR_CPU_X86_DATA_INIT { 0 } diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 17d4c0a359..f0b2553c5e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -6922,6 +6922,7 @@ qemuBuildCpuCommandLine(virCommandPtr cmd, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: if (def->hyperv_features[i] =3D=3D VIR_TRISTATE_SWITCH_ON) virBufferAsprintf(&buf, ",hv_%s", virDomainHypervTypeToString(i)); diff --git a/src/qemu/qemu_parse_command.c b/src/qemu/qemu_parse_command.c index 1e67a5a8c8..fdc1d34068 100644 --- a/src/qemu/qemu_parse_command.c +++ b/src/qemu/qemu_parse_command.c @@ -1538,6 +1538,7 @@ qemuParseCommandLineCPU(virDomainDefPtr dom, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: if (value) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("HyperV feature '%s' should not " diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index e97628dd4a..19a7405d99 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3914,6 +3914,7 @@ qemuProcessVerifyHypervFeatures(virDomainDefPtr def, case VIR_DOMAIN_HYPERV_RESET: case VIR_DOMAIN_HYPERV_FREQUENCIES: case VIR_DOMAIN_HYPERV_REENLIGHTENMENT: + case VIR_DOMAIN_HYPERV_TLBFLUSH: virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("host doesn't support hyperv '%s' feature"), virDomainHypervTypeToString(i)); diff --git a/tests/qemuxml2argvdata/hyperv-off.xml b/tests/qemuxml2argvdata= /hyperv-off.xml index b2e3612df9..dc5777355f 100644 --- a/tests/qemuxml2argvdata/hyperv-off.xml +++ b/tests/qemuxml2argvdata/hyperv-off.xml @@ -22,6 +22,7 @@ + diff --git a/tests/qemuxml2argvdata/hyperv.args b/tests/qemuxml2argvdata/hy= perv.args index 4feafad8e2..6ee6198fb0 100644 --- a/tests/qemuxml2argvdata/hyperv.args +++ b/tests/qemuxml2argvdata/hyperv.args @@ -10,7 +10,7 @@ QEMU_AUDIO_DRV=3Dnone \ -machine pc,accel=3Dtcg,usb=3Doff,dump-guest-core=3Doff \ -cpu 'qemu32,hv_relaxed,hv_vapic,hv_spinlocks=3D0x2fff,hv_vpindex,hv_runti= me,\ hv_synic,hv_stimer,hv_reset,hv_vendor_id=3DKVM Hv,hv_frequencies,\ -hv_reenlightenment' \ +hv_reenlightenment,hv_tlbflush' \ -m 214 \ -smp 6,sockets=3D6,cores=3D1,threads=3D1 \ -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ diff --git a/tests/qemuxml2argvdata/hyperv.xml b/tests/qemuxml2argvdata/hyp= erv.xml index 20fcdba59e..816adf6907 100644 --- a/tests/qemuxml2argvdata/hyperv.xml +++ b/tests/qemuxml2argvdata/hyperv.xml @@ -22,6 +22,7 @@ + diff --git a/tests/qemuxml2xmloutdata/hyperv-off.xml b/tests/qemuxml2xmlout= data/hyperv-off.xml index 4a41e0c37e..77a8dac810 100644 --- a/tests/qemuxml2xmloutdata/hyperv-off.xml +++ b/tests/qemuxml2xmloutdata/hyperv-off.xml @@ -22,6 +22,7 @@ + diff --git a/tests/qemuxml2xmloutdata/hyperv.xml b/tests/qemuxml2xmloutdata= /hyperv.xml index 183b45980b..fc8c59a557 100644 --- a/tests/qemuxml2xmloutdata/hyperv.xml +++ b/tests/qemuxml2xmloutdata/hyperv.xml @@ -22,6 +22,7 @@ + --=20 2.14.4 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list