From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 1CB5CC433ED for ; Fri, 21 May 2021 09:55:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0781613CB for ; Fri, 21 May 2021 09:55:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237697AbhEUJ41 (ORCPT ); Fri, 21 May 2021 05:56:27 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:43037 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237287AbhEUJy6 (ORCPT ); Fri, 21 May 2021 05:54:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621590815; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=a8BL4y8hzplom3uvMHjbKIRqntc0h4EGtmEhTY7ncOE=; b=SzywFTS6t0/iwysjjhe8F9E/a49Ye8VmuZyW9OmwdhzwNRzk/minuvyoRY+Mk6dC1MXdYU GS4xZA/4GCQ70qAwWnn0COg8VYovNHqSkmcKqBqDUpWo5niGDsycXaYdTzMcXpnnzDaRwk ub801FFzzfE3040P+2zfA1kS6QzkpQQ= 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-471-OlaaYqs1O-GjSLWH8yYTug-1; Fri, 21 May 2021 05:53:33 -0400 X-MC-Unique: OlaaYqs1O-GjSLWH8yYTug-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8ED03101F7D3; Fri, 21 May 2021 09:53:32 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id A31B3687F7; Fri, 21 May 2021 09:53:30 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Siddharth Chandrasekaran , linux-kernel@vger.kernel.org Subject: [PATCH v2 27/30] KVM: x86: hyper-v: Honor HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED bit Date: Fri, 21 May 2021 11:52:01 +0200 Message-Id: <20210521095204.2161214-28-vkuznets@redhat.com> In-Reply-To: <20210521095204.2161214-1-vkuznets@redhat.com> References: <20210521095204.2161214-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hypercalls which use extended processor masks are only available when HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED privilege bit is exposed (and 'RECOMMENDED' is rather a misnomer). Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index ba5af4d27ccf..4ad27e7cdb05 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2046,11 +2046,19 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) hv_vcpu->cpuid_cache.features_ebx & HV_DEBUGGING; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; case HVCALL_SEND_IPI_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; case HVCALL_SEND_IPI: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_CLUSTER_IPI_RECOMMENDED; -- 2.31.1