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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9177C0032E for ; Fri, 20 Oct 2023 22:56:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230295AbjJTW4t (ORCPT ); Fri, 20 Oct 2023 18:56:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230270AbjJTW4r (ORCPT ); Fri, 20 Oct 2023 18:56:47 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3ADFCD7A for ; Fri, 20 Oct 2023 15:56:44 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-5a828bdcfbaso19324557b3.2 for ; Fri, 20 Oct 2023 15:56:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1697842603; x=1698447403; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=4wuE33JR6uRipbrn8kdzQrSZIpZ8wHAHfWDfHw4x2Go=; b=3eiPf0+PzGX70YmdaODsJ7bUJcU5w32j2jYgh+cKURMXGAIAINfIhjWo3wNpHiuOKU n3kYQKQzu3kdVN6NaK4cgmiOWB/3AxA54FOoJeNxYxHDqqFVAAOUmyHCCI//o12qUWwM GH2ZowGMd86tZgR7nmTQCKDrriMqZ4db2LZey1LrWk6mEdJTlklJYIFDQCSf5sI016sn IZnH0lkNj9b6WNBj62rvhPIFHLnftqivD+/D4stFxmPsSDknzKN7kcXwWKS698Rexssb 31RGCYxVgbpNrmk6v2LwSOr0BkA7akwT40U64edruA0I9Z0oopvqP+9n6Iv118xsjJnD RAsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697842603; x=1698447403; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=4wuE33JR6uRipbrn8kdzQrSZIpZ8wHAHfWDfHw4x2Go=; b=DJbt7oPcG8C4EyyASyDUujbx8G9aydBnGaFkd1QSYxDVptcl4/mGrGnSDIrhmCBAUU LzH7CDS8TdIYX5e++J94orzIYiCbJ4KTgjTwNpWf6UJ/p8ul6GL6EaS7zZOWKghO5C44 LLCghQzJ6rX7FwiDPoCEJY6dkSmLKDTWuBqwCLx9pqmQe/KEELMLR+6WSSo8FWSA9788 ch6i46bkAn80BtN4P7Dpj1LQJhgwCFTVajf+tSCOVaJUlJe5m25wLxxrgKWT/I6tyVkb Q850AC0CKfiGzkK5S0aS43pDs1+XylmnzjxNNHK2skfrtSh3AZHdR9bImDSeTFJY1WF+ 8hOg== X-Gm-Message-State: AOJu0Yzl5kCe5agBFuQzFDNzGCqj5A4yv+2la8lZj57ElcD92WkHlC8S TLpi4IP8YhNGtiMtVSaqqp4HNxxZugc= X-Google-Smtp-Source: AGHT+IEFeC6rrkwTpPozE6wC3tZ7yqN0ETi+88hv8Jirws+BdHPbVzuw5siyvgARe8gtQf5TRxiGRXB9Rjk= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a0d:dd10:0:b0:577:619e:d3c9 with SMTP id g16-20020a0ddd10000000b00577619ed3c9mr80276ywe.10.1697842603528; Fri, 20 Oct 2023 15:56:43 -0700 (PDT) Date: Fri, 20 Oct 2023 15:56:21 -0700 In-Reply-To: <20231005031237.1652871-1-jmattson@google.com> Mime-Version: 1.0 References: <20231005031237.1652871-1-jmattson@google.com> X-Mailer: git-send-email 2.42.0.655.g421f12c284-goog Message-ID: <169766229957.1906201.16765121392662291005.b4-ty@google.com> Subject: Re: [PATCH v2] x86: KVM: Add feature flag for CPUID.80000021H:EAX[bit 1] From: Sean Christopherson To: Sean Christopherson , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Pawan Gupta , Jiaxi Chen , Kim Phillips , Paolo Bonzini , "H. Peter Anvin" , x86@kernel.org, Dave Hansen , Borislav Petkov , Ingo Molnar , Thomas Gleixner , Jim Mattson Content-Type: text/plain; charset="utf-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 04 Oct 2023 20:12:37 -0700, Jim Mattson wrote: > Define an X86_FEATURE_* flag for CPUID.80000021H:EAX.[bit 1], and > advertise the feature to userspace via KVM_GET_SUPPORTED_CPUID. > > Per AMD's "Processor Programming Reference (PPR) for AMD Family 19h > Model 61h, Revision B1 Processors (56713-B1-PUB)," this CPUID bit > indicates that a WRMSR to MSR_FS_BASE, MSR_GS_BASE, or > MSR_KERNEL_GS_BASE is non-serializing. This is a change in previously > architected behavior. > > [...] Applied to kvm-x86 misc, thanks! [1/1] x86: KVM: Add feature flag for CPUID.80000021H:EAX[bit 1] https://github.com/kvm-x86/linux/commit/329369caeccb -- https://github.com/kvm-x86/linux/tree/next