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=-17.3 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_SANE_1 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 21E45C433ED for ; Tue, 13 Apr 2021 09:11:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03A0A60234 for ; Tue, 13 Apr 2021 09:11:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245298AbhDMJMA (ORCPT ); Tue, 13 Apr 2021 05:12:00 -0400 Received: from smtp-fw-9103.amazon.com ([207.171.188.200]:33888 "EHLO smtp-fw-9103.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236520AbhDMJL5 (ORCPT ); Tue, 13 Apr 2021 05:11:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.de; i=@amazon.de; q=dns/txt; s=amazon201209; t=1618305098; x=1649841098; h=date:from:to:cc:message-id:references:mime-version: in-reply-to:subject; bh=9OKBIxKddRO6dVokae9Nxqj8+3Oy9D13htA8hNvlxT0=; b=VLmfQlc49UZUIOyLrsXwDwJARKHBAGr/q7BfUWlA9APc2CaMGFB4zHcu POTgsPZ6w5SxUMsWpK1pUrpo6YjTGUXAIws+8oePNm2UGlO20ErFxn4ZF vjw/1vVpWDEW0NpoTsNHLOo9QUPRj6014mMNLbK/dNWi7MxqwVSqOznIy A=; X-IronPort-AV: E=Sophos;i="5.82,219,1613433600"; d="scan'208";a="925562785" Subject: Re: [PATCH v2 4/4] KVM: hyper-v: Advertise support for fast XMM hypercalls Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO email-inbound-relay-1a-67b371d8.us-east-1.amazon.com) ([10.25.36.210]) by smtp-border-fw-out-9103.sea19.amazon.com with ESMTP; 13 Apr 2021 09:11:30 +0000 Received: from EX13D28EUC003.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan3.iad.amazon.com [10.40.163.38]) by email-inbound-relay-1a-67b371d8.us-east-1.amazon.com (Postfix) with ESMTPS id 56F38A1D98; Tue, 13 Apr 2021 09:11:23 +0000 (UTC) Received: from u366d62d47e3651.ant.amazon.com (10.43.160.209) by EX13D28EUC003.ant.amazon.com (10.43.164.43) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 13 Apr 2021 09:11:15 +0000 Date: Tue, 13 Apr 2021 11:11:11 +0200 From: Siddharth Chandrasekaran To: Wei Liu CC: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , "Thomas Gleixner" , Ingo Molnar , "Borislav Petkov" , , "H. Peter Anvin" , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , "Alexander Graf" , Evgeny Iakovlev , Liran Alon , Ioannis Aslanidis , , , Message-ID: <20210413091110.GB25751@u366d62d47e3651.ant.amazon.com> References: <5ec20918b06cad17cb43f04be212c5e21c18caea.1618244920.git.sidcha@amazon.de> <20210412201423.rfpykzfgpmjh6ydy@liuwe-devbox-debian-v2> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20210412201423.rfpykzfgpmjh6ydy@liuwe-devbox-debian-v2> User-Agent: Mutt/1.9.4 (2018-02-28) X-Originating-IP: [10.43.160.209] X-ClientProxiedBy: EX13D47UWC004.ant.amazon.com (10.43.162.74) To EX13D28EUC003.ant.amazon.com (10.43.164.43) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 12, 2021 at 08:14:23PM +0000, Wei Liu wrote: > On Mon, Apr 12, 2021 at 07:00:17PM +0200, Siddharth Chandrasekaran wrote: > > Now that all extant hypercalls that can use XMM registers (based on > > spec) for input/outputs are patched to support them, 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 | 2 ++ > > 2 files changed, 8 insertions(+), 1 deletion(-) > > > > diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h > > index e6cd3fee562b..716f12be411e 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 ouput block via XMM > > "output" Fixed. Thanks. ~ Sid. 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