From patchwork Thu Apr 22 16:11:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 12218873 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74A69C433ED for ; Thu, 22 Apr 2021 16:23:53 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 09A59613D5 for ; Thu, 22 Apr 2021 16:23:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 09A59613D5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39554 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lZc7L-0008Ta-TJ for qemu-devel@archiver.kernel.org; Thu, 22 Apr 2021 12:23:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50912) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lZbvo-0003cn-8u for qemu-devel@nongnu.org; Thu, 22 Apr 2021 12:11:56 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:33148) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lZbvm-00033U-J4 for qemu-devel@nongnu.org; Thu, 22 Apr 2021 12:11:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1619107914; 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=MF24+tGcu2Fp/r3YBZehQHa0V5od0ydoePIAfDHA10Y=; b=I0S84vg/9dmjVpDu+ZWNmWtMj+0Xd9zOgydcC8tdOH6RZ8ls1AAOblzM1nmv+MRzLGsVcb HbPJWevMUXdEzM+YZt0pk6dOvEzHG+VUjl8l/EgdE/AY/pkTItni8JMCgah2M+TuWFNdgl 4Hf7roodimrx1uw3CNUtk9IOhycxqIc= 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-396--Ap5XUxOOry3e_CDv_iliQ-1; Thu, 22 Apr 2021 12:11:47 -0400 X-MC-Unique: -Ap5XUxOOry3e_CDv_iliQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9BE05343A2 for ; Thu, 22 Apr 2021 16:11:46 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.194.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 068D55B4A0; Thu, 22 Apr 2021 16:11:44 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH v6 05/19] i386: introduce hyperv_feature_supported() Date: Thu, 22 Apr 2021 18:11:16 +0200 Message-Id: <20210422161130.652779-6-vkuznets@redhat.com> In-Reply-To: <20210422161130.652779-1-vkuznets@redhat.com> References: <20210422161130.652779-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 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 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: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 , Eduardo Habkost , Igor Mammedov Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Clean up hv_cpuid_check_and_set() by separating hyperv_feature_supported() off it. No functional change intended. Signed-off-by: Vitaly Kuznetsov Reviewed-by: Eduardo Habkost --- target/i386/kvm/kvm.c | 49 ++++++++++++++++++++++++++----------------- 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index f791baa29acf..ba093dba4d23 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1107,13 +1107,33 @@ static int hv_cpuid_get_fw(struct kvm_cpuid2 *cpuid, int fw, uint32_t *r) return 0; } +static bool hyperv_feature_supported(struct kvm_cpuid2 *cpuid, int feature) +{ + uint32_t r, fw, bits; + int i; + + for (i = 0; i < ARRAY_SIZE(kvm_hyperv_properties[feature].flags); i++) { + fw = kvm_hyperv_properties[feature].flags[i].fw; + bits = kvm_hyperv_properties[feature].flags[i].bits; + + if (!fw) { + continue; + } + + if (hv_cpuid_get_fw(cpuid, fw, &r) || (r & bits) != bits) { + return false; + } + } + + return true; +} + static int hv_cpuid_check_and_set(CPUState *cs, struct kvm_cpuid2 *cpuid, int feature) { X86CPU *cpu = X86_CPU(cs); - uint32_t r, fw, bits; uint64_t deps; - int i, dep_feat; + int dep_feat; if (!hyperv_feat_enabled(cpu, feature) && !cpu->hyperv_passthrough) { return 0; @@ -1132,23 +1152,14 @@ static int hv_cpuid_check_and_set(CPUState *cs, struct kvm_cpuid2 *cpuid, deps &= ~(1ull << dep_feat); } - for (i = 0; i < ARRAY_SIZE(kvm_hyperv_properties[feature].flags); i++) { - fw = kvm_hyperv_properties[feature].flags[i].fw; - bits = kvm_hyperv_properties[feature].flags[i].bits; - - if (!fw) { - continue; - } - - if (hv_cpuid_get_fw(cpuid, fw, &r) || (r & bits) != bits) { - if (hyperv_feat_enabled(cpu, feature)) { - fprintf(stderr, - "Hyper-V %s is not supported by kernel\n", - kvm_hyperv_properties[feature].desc); - return 1; - } else { - return 0; - } + if (!hyperv_feature_supported(cpuid, feature)) { + if (hyperv_feat_enabled(cpu, feature)) { + fprintf(stderr, + "Hyper-V %s is not supported by kernel\n", + kvm_hyperv_properties[feature].desc); + return 1; + } else { + return 0; } }