From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E899C1E519 for ; Mon, 10 Mar 2025 15:50:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741621821; cv=none; b=qRx8GJ/Kzda957uA2bHS3Eyh5UfMfpuO6MHJMhYZx6igQ/O1RTl0U+zwJ5Ayp5tawUPWwWrThfOW3j5v+dfYEBkUmdnGAIRT2ijbiYZnc1dRKNyqrXSC2R77xgHk+r6kE6NltyDEJ6yi+kxogZukxiTT4UKjTms1sLwsyXVH17A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741621821; c=relaxed/simple; bh=rKqJdaCGrVTq7fNXHtoNo7yxxOy7HgFbH3suWMmXC8k=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hhUXE/tMv/21u1ARkelvVbRlebipBXiUn0GQPEQMgDQTmuo9gcrp7zKIuMLsGtOXFytznGinrdzUFWHGu4DagJkgEZEOEpC1dnjh2bqPG8ceq7+zxXx/jaGdh2vdz2OweHWFXf4sDpSFw00kpv2nMFzligW9hkXU5T9DX255G9U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ihvbZR7T; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ihvbZR7T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37CABC4CEE5; Mon, 10 Mar 2025 15:50:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741621820; bh=rKqJdaCGrVTq7fNXHtoNo7yxxOy7HgFbH3suWMmXC8k=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ihvbZR7TfRvi0q3mkJBev9kqUd7LrUGGYhN5ojcjSWGA8Wrx/rpISWILDKYL6MF4Y +je15DXjJ/1P/0K90rmtsslvlItR0w+diCs31k12h0WOjGl89rVfDYNBtAWUakwK/2 ppscyp1NtY6yuc2H8WpU98saUmS/3OqgdcqN1wK/Ad4uI+DSSZGTa31MxmHYk+ZHpv hHpPNQwyBsjcvppnTXomHTRMQMI2oNVA4r6hYxQ8TMAOB0b5DhDkHboVVkk3n1d5ZE dBHZktVDv3meyeeirDf8Fx+biVqU6X1w3QOZN/oNlepUW34MKDPgS2E/Vl59Hnvxm8 lEuh7HX47tv8w== Date: Mon, 10 Mar 2025 16:50:13 +0100 From: Alexey Gladkov To: Borislav Petkov Cc: =?iso-8859-1?Q?J=FCrgen_Gro=DF?= , Joerg Roedel , "Alexey Gladkov (Intel)" , "Kirill A. Shutemov" , Dave Hansen , Joerg Roedel , Ingo Molnar , x86@kernel.org, hpa@zytor.com, Tom Lendacky , Nikunj A Dadhania , linux-kernel@vger.kernel.org, Larry.Dewey@amd.com Subject: Re: [PATCH] x86/sev: Make SEV_STATUS available via SYSFS Message-ID: References: <20250310133833.GHZ87rWfuV6WgQTsoh@fat_crate.local> <20250310151154.GOZ88BOinZVkbYEx0w@fat_crate.local> <104b6d4f-2848-42f4-a134-3373d12d9424@suse.com> <20250310154152.GQZ88IQLEHoAi0HLdU@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250310154152.GQZ88IQLEHoAi0HLdU@fat_crate.local> On Mon, Mar 10, 2025 at 04:41:52PM +0100, Borislav Petkov wrote: > On Mon, Mar 10, 2025 at 04:33:08PM +0100, Jürgen Groß wrote: > > Kind of. > > > > /sys/hypervisor is meant to provide data for running under a hypervisor. > > > > It is NOT meant to provide data for running as a hypervisor. > > Hah. > > Which would mean that > > /sys/hypervisor == /sys/guest > > the way we envision it. > > Do we need to dump all the HV levels in it? Hm. We already have: /sys/hypervisor/type (Type of hypervisor) /sys/hypervisor/guest_type (Type of guest) I don't really understand how you propose to locate the files for host and guest and what you propose to put in /sys/guest. > I think Joerg wants to dump the fact that there's an SVSM present. I guess we > can dump the "stack" of "things" running under Linux as you suggest it. > > Hmmm. > > -- > Regards/Gruss, > Boris. > > https://people.kernel.org/tglx/notes-about-netiquette > -- Rgrds, legion