From nobody Mon Feb 9 17:37:27 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1612975813; cv=none; d=zohomail.com; s=zohoarc; b=FQLoRJ9exrCr0J7D8X8M43cQBNtKar/1rK0g/t08AVuaiMFX6uBzljXqOKoQ6PyqxEhnE9UZBPqzSXeR0DMmAz25bXrsn9BoZlJVluxOrhDKvVIQp7StKhC9fGHbZIlE46MWo4x5PIvlIDkmN/06j41f5fHRCldBWGcYTrY2r+s= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1612975813; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=1u9mcxYZQJ7ypVFtmUk66plC0dIbUY+DLO2gdZxDyf4=; b=K80V/R7N4fkC2cK+m0YLGsbdmoQOiN2l4/Fn7W2khAVIRwPdoUkiiDXbKTVa97UwBEVS7e8PwRTZocBM4T7WNCP0ci91D3QTa8ldie0jZJ3ZxKRqGm9FSYJyvcgVPugzRflbXaZqaM+4T/vbjI+w6yWNhus7OcyBW8kv8DkZ9Wo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1612975813509754.5209280068915; Wed, 10 Feb 2021 08:50:13 -0800 (PST) Received: from localhost ([::1]:59944 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9sgu-0007rv-Cr for importer@patchew.org; Wed, 10 Feb 2021 11:50:12 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42382) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l9sYR-0007Ih-Qb for qemu-devel@nongnu.org; Wed, 10 Feb 2021 11:41:28 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:38371) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l9sYN-0008Uq-Nz for qemu-devel@nongnu.org; Wed, 10 Feb 2021 11:41:27 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-8-kAVlKYSZMe6NEp13Odw5aQ-1; Wed, 10 Feb 2021 11:41:17 -0500 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6A70C1009617 for ; Wed, 10 Feb 2021 16:41:16 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id E728F5D9E3; Wed, 10 Feb 2021 16:41:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612975279; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1u9mcxYZQJ7ypVFtmUk66plC0dIbUY+DLO2gdZxDyf4=; b=HDqOYDGck2pzIPRnrG+c+mrnTv2I/7QAIGgzGBHWgZhMaM7kRoaWVOvLgSmPA4bnhBy8gc Q7SACmolSXOBtpGji/fVefj7IkUBDI3sR41DwwWg7C7+tCzFqhcu69hLRohseHi4pS+Coc hds+nBGJdq4fpCoTHHibb1lc2JVchL4= X-MC-Unique: kAVlKYSZMe6NEp13Odw5aQ-1 From: Vitaly Kuznetsov To: qemu-devel@nongnu.org, Eduardo Habkost Subject: [PATCH v4 16/21] i386: track explicit 'hv-*' features enablement/disablement Date: Wed, 10 Feb 2021 17:40:28 +0100 Message-Id: <20210210164033.607612-17-vkuznets@redhat.com> In-Reply-To: <20210210164033.607612-1-vkuznets@redhat.com> References: <20210210164033.607612-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=vkuznets@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=vkuznets@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.568, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Marcelo Tosatti , Igor Mammedov Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" Sometimes we'd like to know which features were explicitly enabled and which were explicitly disabled on the command line. E.g. it seems logical to hand= le 'hv_passthrough,hv_feature=3Doff' as "enable everything supported by the ho= st except for hv_feature" but this doesn't seem to be possible with the current 'hyperv_features' bit array. Introduce 'hv_features_on'/'hv_features_off' add-ons and track explicit enablement/disablement there. Note, it doesn't seem to be possible to fill 'hyperv_features' array during CPU creation time when 'hv-passthrough' is specified and we're running on an older kernel without KVM_CAP_SYS_HYPERV_CPUID support. To get the list of the supported Hyper-V features we need to actually create KVM VCPU and this happens much later. No functional change intended. Signed-off-by: Vitaly Kuznetsov --- target/i386/cpu.c | 237 ++++++++++++++++++++++++++++++++++++++++------ target/i386/cpu.h | 2 + 2 files changed, 209 insertions(+), 30 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index c4e8863c7ca0..e8a004c39d04 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -4553,6 +4553,178 @@ static void x86_cpuid_set_tsc_freq(Object *obj, Vis= itor *v, const char *name, cpu->env.tsc_khz =3D cpu->env.user_tsc_khz =3D value / 1000; } =20 +static bool x86_hv_feature_get(Object *obj, int feature) +{ + X86CPU *cpu =3D X86_CPU(obj); + + return cpu->hyperv_features & BIT(feature); +} + +static void x86_hv_feature_set(Object *obj, bool value, int feature) +{ + X86CPU *cpu =3D X86_CPU(obj); + + if (value) { + cpu->hyperv_features |=3D BIT(feature); + cpu->hyperv_features_on |=3D BIT(feature); + cpu->hyperv_features_off &=3D ~BIT(feature); + } else { + cpu->hyperv_features &=3D ~BIT(feature); + cpu->hyperv_features_on &=3D ~BIT(feature); + cpu->hyperv_features_off |=3D BIT(feature); + } +} + +static bool x86_hv_relaxed_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_RELAXED); +} + +static void x86_hv_relaxed_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_RELAXED); +} + +static bool x86_hv_vapic_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_VAPIC); +} + +static void x86_hv_vapic_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_VAPIC); +} + +static bool x86_hv_time_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_TIME); +} + +static void x86_hv_time_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_TIME); +} + +static bool x86_hv_crash_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_CRASH); +} + +static void x86_hv_crash_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_CRASH); +} + +static bool x86_hv_reset_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_RESET); +} + +static void x86_hv_reset_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_RESET); +} + +static bool x86_hv_vpindex_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_VPINDEX); +} + +static void x86_hv_vpindex_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_VPINDEX); +} + +static bool x86_hv_runtime_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_RUNTIME); +} + +static void x86_hv_runtime_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_RUNTIME); +} + +static bool x86_hv_synic_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_SYNIC); +} + +static void x86_hv_synic_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_SYNIC); +} + +static bool x86_hv_stimer_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_STIMER); +} + +static void x86_hv_stimer_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_STIMER); +} + +static bool x86_hv_frequencies_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_FREQUENCIES); +} + +static void x86_hv_frequencies_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_FREQUENCIES); +} + +static bool x86_hv_reenlightenment_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_REENLIGHTENMENT); +} + +static void x86_hv_reenlightenment_set(Object *obj, bool value, Error **er= rp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_REENLIGHTENMENT); +} + +static bool x86_hv_tlbflush_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_TLBFLUSH); +} + +static void x86_hv_tlbflush_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_TLBFLUSH); +} + +static bool x86_hv_evmcs_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_EVMCS); +} + +static void x86_hv_evmcs_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_EVMCS); +} + +static bool x86_hv_ipi_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_IPI); +} + +static void x86_hv_ipi_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_IPI); +} + +static bool x86_hv_stimer_direct_get(Object *obj, Error **errp) +{ + return x86_hv_feature_get(obj, HYPERV_FEAT_STIMER_DIRECT); +} + +static void x86_hv_stimer_direct_set(Object *obj, bool value, Error **errp) +{ + x86_hv_feature_set(obj, value, HYPERV_FEAT_STIMER_DIRECT); +} + /* Generic getter for "feature-words" and "filtered-features" properties */ static void x86_cpu_get_feature_words(Object *obj, Visitor *v, const char *name, void *opaque, @@ -7107,36 +7279,6 @@ static Property x86_cpu_properties[] =3D { =20 DEFINE_PROP_UINT32("hv-spinlocks", X86CPU, hyperv_spinlock_attempts, HYPERV_SPINLOCK_NEVER_NOTIFY), - DEFINE_PROP_BIT64("hv-relaxed", X86CPU, hyperv_features, - HYPERV_FEAT_RELAXED, 0), - DEFINE_PROP_BIT64("hv-vapic", X86CPU, hyperv_features, - HYPERV_FEAT_VAPIC, 0), - DEFINE_PROP_BIT64("hv-time", X86CPU, hyperv_features, - HYPERV_FEAT_TIME, 0), - DEFINE_PROP_BIT64("hv-crash", X86CPU, hyperv_features, - HYPERV_FEAT_CRASH, 0), - DEFINE_PROP_BIT64("hv-reset", X86CPU, hyperv_features, - HYPERV_FEAT_RESET, 0), - DEFINE_PROP_BIT64("hv-vpindex", X86CPU, hyperv_features, - HYPERV_FEAT_VPINDEX, 0), - DEFINE_PROP_BIT64("hv-runtime", X86CPU, hyperv_features, - HYPERV_FEAT_RUNTIME, 0), - DEFINE_PROP_BIT64("hv-synic", X86CPU, hyperv_features, - HYPERV_FEAT_SYNIC, 0), - DEFINE_PROP_BIT64("hv-stimer", X86CPU, hyperv_features, - HYPERV_FEAT_STIMER, 0), - DEFINE_PROP_BIT64("hv-frequencies", X86CPU, hyperv_features, - HYPERV_FEAT_FREQUENCIES, 0), - DEFINE_PROP_BIT64("hv-reenlightenment", X86CPU, hyperv_features, - HYPERV_FEAT_REENLIGHTENMENT, 0), - DEFINE_PROP_BIT64("hv-tlbflush", X86CPU, hyperv_features, - HYPERV_FEAT_TLBFLUSH, 0), - DEFINE_PROP_BIT64("hv-evmcs", X86CPU, hyperv_features, - HYPERV_FEAT_EVMCS, 0), - DEFINE_PROP_BIT64("hv-ipi", X86CPU, hyperv_features, - HYPERV_FEAT_IPI, 0), - DEFINE_PROP_BIT64("hv-stimer-direct", X86CPU, hyperv_features, - HYPERV_FEAT_STIMER_DIRECT, 0), DEFINE_PROP_ON_OFF_AUTO("hv-no-nonarch-coresharing", X86CPU, hyperv_no_nonarch_cs, ON_OFF_AUTO_OFF), DEFINE_PROP_BOOL("hv-passthrough", X86CPU, hyperv_passthrough, false), @@ -7283,6 +7425,41 @@ static void x86_cpu_common_class_init(ObjectClass *o= c, void *data) x86_cpu_get_crash_info_qom, NULL, NULL, NULL= ); #endif =20 + object_class_property_add_bool(oc, "hv-relaxed", + x86_hv_relaxed_get, x86_hv_relaxed_set); + object_class_property_add_bool(oc, "hv-vapic", + x86_hv_vapic_get, x86_hv_vapic_set); + object_class_property_add_bool(oc, "hv-time", + x86_hv_time_get, x86_hv_time_set); + object_class_property_add_bool(oc, "hv-crash", + x86_hv_crash_get, x86_hv_crash_set); + object_class_property_add_bool(oc, "hv-reset", + x86_hv_reset_get, x86_hv_reset_set); + object_class_property_add_bool(oc, "hv-vpindex", + x86_hv_vpindex_get, x86_hv_vpindex_set); + object_class_property_add_bool(oc, "hv-runtime", + x86_hv_runtime_get, x86_hv_runtime_set); + object_class_property_add_bool(oc, "hv-synic", + x86_hv_synic_get, x86_hv_synic_set); + object_class_property_add_bool(oc, "hv-stimer", + x86_hv_stimer_get, x86_hv_stimer_set); + object_class_property_add_bool(oc, "hv-frequencies", + x86_hv_frequencies_get, + x86_hv_frequencies_set); + object_class_property_add_bool(oc, "hv-reenlightenment", + x86_hv_reenlightenment_get, + x86_hv_reenlightenment_set); + object_class_property_add_bool(oc, "hv-tlbflush", + x86_hv_tlbflush_get, x86_hv_tlbflush_se= t); + object_class_property_add_bool(oc, "hv-evmcs", + x86_hv_evmcs_get, + x86_hv_evmcs_set); + object_class_property_add_bool(oc, "hv-ipi", + x86_hv_ipi_get, x86_hv_ipi_set); + object_class_property_add_bool(oc, "hv-stimer-direct", + x86_hv_stimer_direct_get, + x86_hv_stimer_direct_set); + for (w =3D 0; w < FEATURE_WORDS; w++) { int bitnr; for (bitnr =3D 0; bitnr < 64; bitnr++) { diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 7ea14822aab5..b4fbd46f0fc9 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1667,6 +1667,8 @@ struct X86CPU { char *hyperv_vendor; bool hyperv_synic_kvm_only; uint64_t hyperv_features; + uint64_t hyperv_features_on; + uint64_t hyperv_features_off; bool hyperv_passthrough; OnOffAuto hyperv_no_nonarch_cs; uint32_t hyperv_vendor_id[3]; --=20 2.29.2