From patchwork Thu Dec 17 12:49:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 11979761 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 637EEC4361B for ; Thu, 17 Dec 2020 12:53:01 +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 EAC4E23884 for ; Thu, 17 Dec 2020 12:53:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAC4E23884 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]:48844 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kpsmB-0003AV-VL for qemu-devel@archiver.kernel.org; Thu, 17 Dec 2020 07:52:59 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60698) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kpsjW-0008KT-Ol for qemu-devel@nongnu.org; Thu, 17 Dec 2020 07:50:15 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:33498) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kpsjT-0005ep-Ks for qemu-devel@nongnu.org; Thu, 17 Dec 2020 07:50:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608209411; 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=wt4fNRO2ON9GlunoHmHt/Bx+t6xVXzutK0kdaZ0ry7E=; b=SCqgxmjAnwcK28tvEFLPL9/t0RnEU0tSTkefK8PhjcHsDoURfQUIgWmMcjKvDbXKUQ361n XTVWOpuMFrIV9dpXDipCKDvsllWu5vBwggjnqtXCgYmDc32BKXOG7x5OSVp/YJDrqq6cwQ Skr7aHa4EnpUmPtb620zX6Nh4DDjOUQ= 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-555-OBvmLqi0OmSVKwzBBS326Q-1; Thu, 17 Dec 2020 07:50:09 -0500 X-MC-Unique: OBvmLqi0OmSVKwzBBS326Q-1 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 9D565107ACE6 for ; Thu, 17 Dec 2020 12:50:08 +0000 (UTC) Received: from vitty.brq.redhat.com (ovpn-116-238.ams2.redhat.com [10.36.116.238]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3346D5D9C0; Thu, 17 Dec 2020 12:50:07 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Subject: [PATCH v2 1/2] i386: introduce kvm_hv_evmcs_available() Date: Thu, 17 Dec 2020 13:49:58 +0100 Message-Id: <20201217124959.262639-2-vkuznets@redhat.com> In-Reply-To: <20201217124959.262639-1-vkuznets@redhat.com> References: <20201217124959.262639-1-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 Received-SPF: pass client-ip=216.205.24.124; envelope-from=vkuznets@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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_H3=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 Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Enlightened VMCS feature is hardware specific, it is only supported on Intel CPUs. Introduce a simple kvm_hv_evmcs_available() helper, it will be used to filter out 'hv_evmcs' when 'hyperv=on' option is added to X86MachineClass. Signed-off-by: Vitaly Kuznetsov --- target/i386/kvm-stub.c | 5 +++++ target/i386/kvm.c | 8 ++++++++ target/i386/kvm_i386.h | 1 + 3 files changed, 14 insertions(+) diff --git a/target/i386/kvm-stub.c b/target/i386/kvm-stub.c index 92f49121b8fa..0a163ae207c5 100644 --- a/target/i386/kvm-stub.c +++ b/target/i386/kvm-stub.c @@ -39,3 +39,8 @@ bool kvm_hv_vpindex_settable(void) { return false; } + +bool kvm_hv_evmcs_available(void) +{ + return false; +} diff --git a/target/i386/kvm.c b/target/i386/kvm.c index bcfa4b03e077..96395d499729 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -95,6 +95,7 @@ static bool has_msr_hv_crash; static bool has_msr_hv_reset; static bool has_msr_hv_vpindex; static bool hv_vpindex_settable; +static bool hv_evmcs_available; static bool has_msr_hv_runtime; static bool has_msr_hv_synic; static bool has_msr_hv_stimer; @@ -192,6 +193,11 @@ bool kvm_hv_vpindex_settable(void) return hv_vpindex_settable; } +bool kvm_hv_evmcs_available(void) +{ + return hv_evmcs_available; +} + static int kvm_get_tsc(CPUState *cs) { X86CPU *cpu = X86_CPU(cs); @@ -2124,6 +2130,8 @@ int kvm_arch_init(MachineState *ms, KVMState *s) has_pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); hv_vpindex_settable = kvm_check_extension(s, KVM_CAP_HYPERV_VP_INDEX); + hv_evmcs_available = + kvm_check_extension(s, KVM_CAP_HYPERV_ENLIGHTENED_VMCS); has_exception_payload = kvm_check_extension(s, KVM_CAP_EXCEPTION_PAYLOAD); if (has_exception_payload) { diff --git a/target/i386/kvm_i386.h b/target/i386/kvm_i386.h index dc725083891c..08968cfb33f1 100644 --- a/target/i386/kvm_i386.h +++ b/target/i386/kvm_i386.h @@ -47,6 +47,7 @@ bool kvm_has_x2apic_api(void); bool kvm_has_waitpkg(void); bool kvm_hv_vpindex_settable(void); +bool kvm_hv_evmcs_available(void); uint64_t kvm_swizzle_msi_ext_dest_id(uint64_t address);