From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43D619456 for ; Tue, 21 Mar 2023 12:44:12 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 7D8582000D; Tue, 21 Mar 2023 12:44:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1679402640; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L+7qSU8PTZ7jb1QFaGzVCG7WQ11iWdZECtfo29qI5vI=; b=dXudV0HgmOUDu0xMnbKEAgdDSpOJniYolzdcHftM2zWGzoSnrI2UiM8mL7EPcEOa9FT3b7 O8rg1AbUJ7AdpmngqScZvj9CCtywT+8XiZLFIgxpUwLyLdw6+ciDv8G6m2rRAyVz1WbmMZ 7IsMQ8mmTEK++BmKuyUI8HfGo4KdLmM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1679402640; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L+7qSU8PTZ7jb1QFaGzVCG7WQ11iWdZECtfo29qI5vI=; b=tMhnkDDf8+E2ELrKJQwRowhJRRwOTCyQ3hXVGXpOldVY6gCE+/0Cz/RwpCn+v8tefuMlq5 74hocgPcTbtAYpBw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 532F513440; Tue, 21 Mar 2023 12:44:00 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id dDzeEpCmGWQeYgAAMHmgww (envelope-from ); Tue, 21 Mar 2023 12:44:00 +0000 Date: Tue, 21 Mar 2023 13:43:58 +0100 From: =?iso-8859-1?Q?J=F6rg_R=F6del?= To: James Bottomley Cc: amd-sev-snp@lists.suse.com, linux-coco@lists.linux.dev, kvm@vger.kernel.org Subject: Re: [ANNOUNCEMENT] COCONUT Secure VM Service Module for SEV-SNP Message-ID: References: <66eee693371c11bbd2173ad5d91afc740aa17b46.camel@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev 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: <66eee693371c11bbd2173ad5d91afc740aa17b46.camel@linux.ibm.com> Hi James, On Tue, Mar 21, 2023 at 07:09:40AM -0400, James Bottomley wrote: > Since this a fork of the AMD svsm code > (https://github.com/AMDESE/linux-svsm/), is it intended to be a > permanent fork, or are you going to be submitting your additions back > upstream like we're trying to do for our initial vTPM prototype? From > the community point of view, having two different SVSM code bases and > having to choose which one to develop against is going to be very > confusing ... The COCONUT-SVSM was and is a separate project and not a fork of AMDs linux-svsm. Some code was ported from our code-base to linux-svsm in the past, namely the SpinLock implementation and the memory allocators. What the project also shares with linux-svsm is the support code in the Linux kernel (host and guest) and the EDK2 changes needed to launch an SVSM. But besides that the two code-bases are different, using a different build approach and different launch protocol. The goals we have with our SVSM are hard to achieve with the linux-svsm code-base, so a merge does not make sense at this point. Regards, -- Jörg Rödel jroedel@suse.de SUSE Software Solutions Germany GmbH Frankenstraße 146 90461 Nürnberg Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman