From patchwork Fri Oct 9 12:18:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 11825689 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 26CCF139F for ; Fri, 9 Oct 2020 12:30:49 +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 CE71422284 for ; Fri, 9 Oct 2020 12:30:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ctvhZ1bS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CE71422284 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:39660 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kQrXr-0003ej-Iu for patchwork-qemu-devel@patchwork.kernel.org; Fri, 09 Oct 2020 08:30:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38594) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kQrMq-0008Uu-HR for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:24 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:58399) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kQrMn-0007xX-4z for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602245953; 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=pwKgAq/hxf+mLEUYqoBAonkOswOPT3+KglEcPT79SCI=; b=ctvhZ1bSEBSobHeKJW6/mHX5AoehEjfWTJmHPnXyYnuBE1PQHpSUQ3mSo41oD2KfnMYKWh I1eSyOeZkP58kUP4iPiifhRzuRJTXcnUn2iCaINOPJ4rFMQ7hLzcxxSpwyzrHRXvusgQJx df4Z5ETUXQjRvxJc+yBKfHAv/DxzSIE= 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-428-l8eokaYzPTWyBeTnxIXfUA-1; Fri, 09 Oct 2020 08:19:11 -0400 X-MC-Unique: l8eokaYzPTWyBeTnxIXfUA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BF8681029D46 for ; Fri, 9 Oct 2020 12:19:10 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.207]) by smtp.corp.redhat.com (Postfix) with ESMTP id 284B65C1BB; Fri, 9 Oct 2020 12:19:08 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH RFC v3 12/23] i386: introduce hyperv_feature_supported() Date: Fri, 9 Oct 2020 14:18:31 +0200 Message-Id: <20201009121842.1938010-13-vkuznets@redhat.com> In-Reply-To: <20201009121842.1938010-1-vkuznets@redhat.com> References: <20201009121842.1938010-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 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=63.128.21.124; envelope-from=vkuznets@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/09 02:34:40 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, RCVD_IN_MSPIKE_H5=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 , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.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 --- target/i386/kvm.c | 49 +++++++++++++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 2c14d45b40bf..73f0d3cd0c37 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1106,13 +1106,33 @@ 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; @@ -1131,23 +1151,14 @@ 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; } }