From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 E6C648BF1 for ; Tue, 7 Feb 2023 21:55:11 +0000 (UTC) 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-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-151-nPEHa01WNlKV_SA1-I39LA-1; Tue, 07 Feb 2023 16:55:09 -0500 X-MC-Unique: nPEHa01WNlKV_SA1-I39LA-1 Received: by mail-wm1-f70.google.com with SMTP id fl9-20020a05600c0b8900b003dfe4bae099so78162wmb.0 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=WKXzRXdgWus8i85HsdFlLzlKF5X/xenEtUCuep6CzRo+nySb5yCuKQLDLGjKB0BBoi 9v0KUUCKWW/1tNfIUmw702TgHuJ8eu59AgQW9nNs4gpuihPxqb4WCbCsUaP1LEmJMqqK G5jgsp5OJO2jQ1RgdXJ+10jluUPquE90PfWALkyh2QYUu0npQrechAsKpkWkHD8mQkEF v/ToWyv0Stbl76umnx1EM8810g/UAong3SDTQiGIlMM8g7v/IvEqwAAklf+bhoTFMYuj DdHA0mrJNhm84ojCFfODRzFTdbZR6+Swa2zhG30tLOuldTQ/77jsnVE9YFMry/tgRsYb +klw== X-Gm-Message-State: AO0yUKX1S6VJU1t26LdboS7GWmcWo7ab4Ngxq0utpgPyyun7nlFY+nRF XN3x6AS/VBkTjsaEj53Ka9YYfu08DKBnmnuwN7eH0Ns3IS+GoNxK24vboss7NkBzX0cBIXLPbIL 5bm4KUO3yK6fYnfMNJbmigQ== X-Received: by 2002:adf:e80e:0:b0:2bf:f44b:7a29 with SMTP id o14-20020adfe80e000000b002bff44b7a29mr3760643wrm.40.1675806908269; 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> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <20044cae-4fab-7ef6-02a0-5955a56e5767@amd.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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