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=-18.8 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, USER_AGENT_GIT autolearn=unavailable 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 96341C433ED for ; Tue, 13 Apr 2021 21:52:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7974561027 for ; Tue, 13 Apr 2021 21:52:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348549AbhDMVwp (ORCPT ); Tue, 13 Apr 2021 17:52:45 -0400 Received: from smtp-fw-6001.amazon.com ([52.95.48.154]:39052 "EHLO smtp-fw-6001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239472AbhDMVwk (ORCPT ); Tue, 13 Apr 2021 17:52:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.de; i=@amazon.de; q=dns/txt; s=amazon201209; t=1618350740; x=1649886740; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=ePsaVDzjf/M9yTDUALCtv7zojuRaTTF0897dU/zK9Lw=; b=W28ZCOgm63uzQG0WoGrs/tYeCSFvo60Y29M7TRmn+f4C2bVhQlFqxfZ3 g1bG8W8j51c4T189v+6cpLxNQBv8+HZzn7juognaFeaXQTtYQRtLr31Fb Dn+8ta9TpGmfd2u73xcVJFHF2bL1NeLSzXyiYjPhELcAP76ltCuCIa1xl w=; X-IronPort-AV: E=Sophos;i="5.82,220,1613433600"; d="scan'208";a="107299146" Received: from iad12-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-2a-90c42d1d.us-west-2.amazon.com) ([10.43.8.2]) by smtp-border-fw-out-6001.iad6.amazon.com with ESMTP; 13 Apr 2021 21:52:12 +0000 Received: from EX13D28EUC003.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan3.pdx.amazon.com [10.236.137.198]) by email-inbound-relay-2a-90c42d1d.us-west-2.amazon.com (Postfix) with ESMTPS id BA0E6A1C18; Tue, 13 Apr 2021 21:52:10 +0000 (UTC) Received: from uc8bbc9586ea454.ant.amazon.com (10.43.161.39) by EX13D28EUC003.ant.amazon.com (10.43.164.43) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 13 Apr 2021 21:52:01 +0000 From: Siddharth Chandrasekaran To: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Thomas Gleixner , Ingo Molnar , Borislav Petkov , , "H. Peter Anvin" , Paolo Bonzini , "Sean Christopherson" , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , "Joerg Roedel" CC: Siddharth Chandrasekaran , Alexander Graf , Evgeny Iakovlev , Liran Alon , Ioannis Aslanidis , , , Subject: [PATCH v3 4/4] KVM: hyper-v: Advertise support for fast XMM hypercalls Date: Tue, 13 Apr 2021 23:50:57 +0200 Message-ID: <33a7e27046c15134667ea891feacbe3fe208f66e.1618349671.git.sidcha@amazon.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.43.161.39] X-ClientProxiedBy: EX13D30UWC002.ant.amazon.com (10.43.162.235) To EX13D28EUC003.ant.amazon.com (10.43.164.43) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that kvm_hv_flush_tlb() has been patched to support XMM hypercall inputs, we can start advertising this feature to guests. Cc: Alexander Graf Cc: Evgeny Iakovlev Signed-off-by: Siddharth Chandrasekaran --- arch/x86/include/asm/hyperv-tlfs.h | 7 ++++++- arch/x86/kvm/hyperv.c | 1 + 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index ee6336a54f92..597ae1142864 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -52,7 +52,7 @@ * Support for passing hypercall input parameter block via XMM * registers is available */ -#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE BIT(4) +#define HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE BIT(4) /* Support for a virtual guest idle state is available */ #define HV_X64_GUEST_IDLE_STATE_AVAILABLE BIT(5) /* Frequency MSRs available */ @@ -61,6 +61,11 @@ #define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE BIT(10) /* Support for debug MSRs available */ #define HV_FEATURE_DEBUG_MSRS_AVAILABLE BIT(11) +/* + * Support for returning hypercall output block via XMM + * registers is available + */ +#define HV_X64_HYPERCALL_XMM_OUTPUT_AVAILABLE BIT(15) /* stimer Direct Mode is available */ #define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(19) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index cd6c6f1f06a4..0f6fd7550510 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2235,6 +2235,7 @@ int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, ent->ebx |= HV_POST_MESSAGES; ent->ebx |= HV_SIGNAL_EVENTS; + ent->edx |= HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE; ent->edx |= HV_FEATURE_FREQUENCY_MSRS_AVAILABLE; ent->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; -- 2.17.1 Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879