From patchwork Fri Oct 9 12:18:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 11825683 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 D5DC1109B for ; Fri, 9 Oct 2020 12:27:44 +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 716B02065D for ; Fri, 9 Oct 2020 12:27:44 +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="MQJWmolL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 716B02065D 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]:59472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kQrUt-0000BM-8s for patchwork-qemu-devel@patchwork.kernel.org; Fri, 09 Oct 2020 08:27:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38490) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kQrMl-0008Lb-Gp for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:21 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:31958) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kQrMe-0007wz-UB for qemu-devel@nongnu.org; Fri, 09 Oct 2020 08:19:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602245949; 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=0enY7T6ZHGh0XkE8zNI+IsOTO+STNh/rJg1glKZ9qm4=; b=MQJWmolL0rBcB39FLfaLOlkFB1YKvxkR+3+2wExHVWCkyO7ymdRd0XvX9CehAYVeFltKS9 wVaP/m20Q7lk5zM5MTNFwpVPPn1xZjGmb4rABTu49R2+cj0sHWGvktiFd8xICdib8FeDzO Dn3rZxwGCjFX9fwynf4xTCwEo8iB0GY= 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-266-GKmzzcwAPriK8HRUoU8S5g-1; Fri, 09 Oct 2020 08:19:08 -0400 X-MC-Unique: GKmzzcwAPriK8HRUoU8S5g-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 77EFC8C2C57 for ; Fri, 9 Oct 2020 12:19:06 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.207]) by smtp.corp.redhat.com (Postfix) with ESMTP id D32EF5C1BB; Fri, 9 Oct 2020 12:19:04 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH RFC v3 10/23] i386: always fill Hyper-V CPUID feature leaves from X86CPU data Date: Fri, 9 Oct 2020 14:18:29 +0200 Message-Id: <20201009121842.1938010-11-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" We have all the required data in X86CPU already and as we are about to split hyperv_handle_properties() into hyperv_expand_features()/ hyperv_fill_cpuids() we can remove the blind copy. The functional change is that QEMU won't pass CPUID leaves it doesn't currently know about to the guest but arguably this is a good change. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 5350cd867759..56bfc8da85d0 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1206,9 +1206,6 @@ static int hyperv_handle_properties(CPUState *cs, } if (cpu->hyperv_passthrough) { - memcpy(cpuid_ent, &cpuid->entries[0], - cpuid->nent * sizeof(cpuid->entries[0])); - c = cpuid_find_entry(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, 0); if (c) { cpu->hyperv_vendor_id[0] = c->ebx; @@ -1307,12 +1304,6 @@ static int hyperv_handle_properties(CPUState *cs, goto free; } - if (cpu->hyperv_passthrough) { - /* We already copied all feature words from KVM as is */ - r = cpuid->nent; - goto free; - } - c = &cpuid_ent[cpuid_i++]; c->function = HV_CPUID_VENDOR_AND_MAX_FUNCTIONS; c->eax = hyperv_feat_enabled(cpu, HYPERV_FEAT_EVMCS) ?