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=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no 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 9CEB4C4741F for ; Fri, 25 Sep 2020 16:40:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 550FF206BE for ; Fri, 25 Sep 2020 16:40:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="m5NtFveS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728056AbgIYQkX (ORCPT ); Fri, 25 Sep 2020 12:40:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728011AbgIYQkV (ORCPT ); Fri, 25 Sep 2020 12:40:21 -0400 Received: from mail-ot1-x342.google.com (mail-ot1-x342.google.com [IPv6:2607:f8b0:4864:20::342]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D27D8C0613CE for ; Fri, 25 Sep 2020 09:40:20 -0700 (PDT) Received: by mail-ot1-x342.google.com with SMTP id o8so2901544otl.4 for ; Fri, 25 Sep 2020 09:40:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=adS2w4MfZVtQ+JdOzVjFl88CdbAyPhM8+osYUFtdj/U=; b=m5NtFveSMLhfuRJGGdkLfEMup8cEopZ/jbnqb7UUZO0HMgcTV545eLiYK19f2Rtic9 XnixmPOvGbambOL+DhjMVQ9mGnjHwL1P63lW23ZeaEO5CtuX7BJVAuDISt87ZaFzaqji +TQjVytRPzlc/f3cs+CnYLbe28QaWc/I3Y0KTEmvF+sQfXu+M9+G5B4+IG9tJkm66rVa LssiqNZHVitPn5b4xTv8RcqNDD6hXDLkYK1+zwQcydYyoFgi6iBfLBm8BNH2WMTlsoAi tCmQl5+2u9BjRUgBdaRT/uOKAwywJ/Qoc9DxSCWSzydl0lJh1NbwKzGeQbxoDOP7vrQP gOSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=adS2w4MfZVtQ+JdOzVjFl88CdbAyPhM8+osYUFtdj/U=; b=X0YuoPS7IbGVpPOZHnrPL36k3cDwUMBvtzin4pRXEN2UnBt4u4FuVdlBHlSPTSLklK ddvMGwOOu5qJ54TH6nomV7CDSDfczqpWLZBGHb6G0B8X1w4O8q+ZT1auHzTfxICvRgUz bzehknLKp641s5W8foTbI64LdyJN3PLz4t28GgsoFEB3l10KY4rcvwGc3unV3wVijjQN dxvCBWk/zYrk7Le3Uc+laALLZv6Ok9cGv/IOxvKg9XIMI1RyCgnEPUqYWFU2kx64izs1 wApDNVzVNGRfOR4cF7bN6LcjIlmjqakF/XsglsP3tYAWCJdwzrhnHhuaQ82JXggv6AfK m/jg== X-Gm-Message-State: AOAM53045MFTtwpy9xw7fWkcgg8T31hPfPxMlODGf/ecDHXpqMKsAytF pEEDhyfMlMnqB0Sq0Ii0ZYTnoAovpTLCh/xA7lENfA== X-Google-Smtp-Source: ABdhPJy/QdDf8ZZphXLshFnr46sMAVEmrQ6ga42OUf0dnO02EpnX+XXwrzbC1TlH5wbcBksxHK3/H9KCAGjVDCAkWbM= X-Received: by 2002:a05:6830:164e:: with SMTP id h14mr894858otr.56.1601052020022; Fri, 25 Sep 2020 09:40:20 -0700 (PDT) MIME-Version: 1.0 References: <20200925143422.21718-1-graf@amazon.com> <20200925143422.21718-2-graf@amazon.com> In-Reply-To: <20200925143422.21718-2-graf@amazon.com> From: Jim Mattson Date: Fri, 25 Sep 2020 09:40:08 -0700 Message-ID: Subject: Re: [PATCH v8 1/8] KVM: x86: Return -ENOENT on unimplemented MSRs To: Alexander Graf Cc: kvm list , Aaron Lewis , Sean Christopherson , Paolo Bonzini , Jonathan Corbet , Vitaly Kuznetsov , Wanpeng Li , Joerg Roedel , KarimAllah Raslan , Dan Carpenter , Maxim Levitsky , linux-doc@vger.kernel.org, LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Fri, Sep 25, 2020 at 7:34 AM Alexander Graf wrote: > > When we find an MSR that we can not handle, bubble up that error code as > MSR error return code. Follow up patches will use that to expose the fact > that an MSR is not handled by KVM to user space. > > Suggested-by: Aaron Lewis > Signed-off-by: Alexander Graf Reviewed-by: Jim Mattson