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[23.128.96.18]) by mx.google.com with ESMTP id r8si2077657edw.288.2020.09.25.09.42.42; Fri, 25 Sep 2020 09:43:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=m5NtFveS; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729528AbgIYQkX (ORCPT + 99 others); Fri, 25 Sep 2020 12:40:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728610AbgIYQkV (ORCPT ); Fri, 25 Sep 2020 12:40:21 -0400 Received: from mail-ot1-x343.google.com (mail-ot1-x343.google.com [IPv6:2607:f8b0:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3012C0613D3 for ; Fri, 25 Sep 2020 09:40:20 -0700 (PDT) Received: by mail-ot1-x343.google.com with SMTP id g96so2856653otb.12 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=LguhcrptugL2yfjY1sHuRkVxbhYMcESV7sUDTLNJkNNAqXUp6iehaTFuhO6wq9sqzb yNb2tK0VXF3wOXPpbSxljBx8I+1rH8wy4Oc2wRvQERM2RRDsW72QlkNzUB589LekzZOJ EC24qHBy84VtsmQF4Wy2M116LLPJN42aNsCj/JPm7d4gKMTUTNbmF06JLPYnJzyLQBq7 FRj4Y5SEP+JHmVc2q5Wno+mrsa6Z4U43HPz6BkcISy5aVBifYjbzwkeOWli3UvhOj8kJ GE/sb52F6KpYrcjJ82dFPz2uLUc/D/kVVPb0pTmSyh5cs0Uj+F+8yWctqMU6b+8pYu1n OrnQ== X-Gm-Message-State: AOAM532gBVixJs26dmqG2+UDu1NbEkTzIJsPBRr8w1y6/R/LDM3Um2VZ 4SUF6JAXVQkzARpLS+m0fULOfWvfZ6cHYSq2dse+6Q== 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-kernel@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