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 217CEC636D3 for ; Tue, 7 Feb 2023 21:56:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229727AbjBGV4E (ORCPT ); Tue, 7 Feb 2023 16:56:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229517AbjBGV4B (ORCPT ); Tue, 7 Feb 2023 16:56:01 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA1EE3A5BA for ; Tue, 7 Feb 2023 13:55:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1675806910; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Ns5gbnLKn7zHOFaovfJzTuDPPi31RWqzHCdX60ieJbU=; b=ZSilrOmE0+nZvFp7s6UN5fVoYB7GKidDdBzPslSHDMRnLMtu6GZvvX2LmWQUTGu6Kvt3Yd 1tjVLGf+/tuVSoNIM8rPG3GXlX+dPDF35fbRLSbMJIxuDGn+VHlbZtc9EGPuEe7uvhBQxM 2LuFf58YDRPdVPSYi55yFG7JcJc8niI= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-250-etq72OqYPNiTH7CdAKj8Bw-1; Tue, 07 Feb 2023 16:55:09 -0500 X-MC-Unique: etq72OqYPNiTH7CdAKj8Bw-1 Received: by mail-wm1-f72.google.com with SMTP id iz20-20020a05600c555400b003dc53fcc88fso67453wmb.2 for ; Tue, 07 Feb 2023 13:55:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Ns5gbnLKn7zHOFaovfJzTuDPPi31RWqzHCdX60ieJbU=; b=iIpqPnrz6wdu2hieon8O6NtInrroJS2QkT8Ik3gqEXwGrH+HatTHpKb2NNGF33RDr/ /aRELBpMt6VMxk0FCzGebIqcC0jGkNS0nfPim4glwmt5rCPxY4hb/F60DChd7poGJzEy Ivg19iKKuTMw/lE3ofUkwdSSzCK8NIsDYEmvw3SJ5qznqgzScn070aJGCACAD4RnE7Ym pNI+gNj+XXj0qp30+C4ss/tLVmiJNxYgy++dHT2ZHcJNdDIlEUg+xaLtsY7b2U/0ZToq 6qgvIjcJOwr9Hp3iNIZh1JeURsH1cON/Q8WEK4jZXq7H5zaWuMLYmudbf30+Y4+IUB4q pmig== X-Gm-Message-State: AO0yUKWqQhyNcZd4gjcCg15ffGW5tVFXh4K5rUjMdcYio4SU4crqlbN2 WZkdOIVhJBhDcFsUFPVtM77ZNvgtBJ3GABr6rA575rBAf3deMnSs8bTzBbWUbs56ptr9EXyqWgk eT0O6BrZG/LTDWWKgf51H3kru X-Received: by 2002:adf:e80e:0:b0:2bf:f44b:7a29 with SMTP id o14-20020adfe80e000000b002bff44b7a29mr3760648wrm.40.1675806908266; Tue, 07 Feb 2023 13:55:08 -0800 (PST) X-Google-Smtp-Source: AK7set9fLl/1R5rJGBWgHb0QWMHHDY5vy4t3o0CvEvD9BeBmDvf9BeYOTUlFuO7kX7ZNygt81a0bVA== X-Received: by 2002:adf:e80e:0:b0:2bf:f44b:7a29 with SMTP id o14-20020adfe80e000000b002bff44b7a29mr3760626wrm.40.1675806908075; Tue, 07 Feb 2023 13:55:08 -0800 (PST) Received: from redhat.com ([2.52.8.17]) by smtp.gmail.com with ESMTPSA id a18-20020a5d4572000000b002c3e7474b0fsm6558116wrc.13.2023.02.07.13.55.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Feb 2023 13:55:07 -0800 (PST) Date: Tue, 7 Feb 2023 16:55:02 -0500 From: "Michael S. Tsirkin" To: Carlos Bilbao Cc: Greg Kroah-Hartman , "Reshetova, Elena" , "Shishkin, Alexander" , "Shutemov, Kirill" , "Kuppuswamy, Sathyanarayanan" , "Kleen, Andi" , "Hansen, Dave" , Thomas Gleixner , Peter Zijlstra , "Wunner, Lukas" , Mika Westerberg , Jason Wang , "Poimboe, Josh" , "aarcange@redhat.com" , Cfir Cohen , Marc Orr , "jbachmann@google.com" , "pgonda@google.com" , "keescook@chromium.org" , James Morris , Michael Kelley , "Lange, Jon" , "linux-coco@lists.linux.dev" , Linux Kernel Mailing List Subject: Re: Linux guest kernel threat model for Confidential Computing Message-ID: <20230207165103-mutt-send-email-mst@kernel.org> References: <658272b5-9547-a69f-b6c9-a7ff2dd2d468@amd.com> <20044cae-4fab-7ef6-02a0-5955a56e5767@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20044cae-4fab-7ef6-02a0-5955a56e5767@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 07, 2023 at 01:53:34PM -0600, Carlos Bilbao wrote: > Given the limitations of current approach, does anyone have any other ideas > for filtering devices prior to their initialization? /me mumbles ... something something ... bpf ... -- MST