From mboxrd@z Thu Jan 1 00:00:00 1970 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 772A8C433F5 for ; Fri, 8 Apr 2022 07:43:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229862AbiDHHpP (ORCPT ); Fri, 8 Apr 2022 03:45:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229852AbiDHHpM (ORCPT ); Fri, 8 Apr 2022 03:45:12 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5216B1BD81F for ; Fri, 8 Apr 2022 00:43:08 -0700 (PDT) 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 EA1131F861; Fri, 8 Apr 2022 07:43:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1649403786; 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=D91alDKSn8qy+HiNCVZ8jqxTZlepaU7yaFo6qWRLmOo=; b=pjZ18QawhJMhp713tkXCF6jT+AMak8pthyVJ7Am3dNJldd5YKaKLxyyHEgOiN8gTpNS6R7 pkDfnromsmCca11wM45IkSX3sxXQOtOe8WoIntyv7UcsX2W0aTcY5iXA20phHXb+lObAlD 1YAeXljv1eAFvf3LZ6V9mbkUkdJC4Xk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1649403786; 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=D91alDKSn8qy+HiNCVZ8jqxTZlepaU7yaFo6qWRLmOo=; b=fXeV/RwzOvny5MXgeHylF13ThHdSNgviI5Sr+pd4AikiZrh243dPXVzvPXud7IBVs0Thb+ zaZ/qTfzspmbj8CQ== 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 8889013AA9; Fri, 8 Apr 2022 07:43:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id DzKXH4rnT2LvFwAAMHmgww (envelope-from ); Fri, 08 Apr 2022 07:43:06 +0000 Date: Fri, 8 Apr 2022 09:43:05 +0200 From: Joerg Roedel To: Sean Christopherson Cc: Varad Gautam , kvm@vger.kernel.org, pbonzini@redhat.com, drjones@redhat.com, marcorr@google.com, zxwang42@gmail.com, erdemaktas@google.com, rientjes@google.com, brijesh.singh@amd.com, Thomas.Lendacky@amd.com, bp@suse.de Subject: Re: [kvm-unit-tests PATCH v3 11/11] x86: AMD SEV-ES: Handle string IO for IOIO #VC Message-ID: References: <20220224105451.5035-1-varad.gautam@suse.com> <20220224105451.5035-12-varad.gautam@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Apr 06, 2022 at 01:50:29AM +0000, Sean Christopherson wrote: > On Thu, Feb 24, 2022, Varad Gautam wrote: > > Using Linux's IOIO #VC processing logic. > > How much string I/O is there in KUT? I assume it's rare, i.e. avoiding it entirely > is probably less work in the long run. The problem is that SEV-ES support will silently break if someone adds it unnoticed and without testing changes on SEV-ES. Regards, -- Jörg Rödel jroedel@suse.de SUSE Software Solutions Germany GmbH Maxfeldstr. 5 90409 Nürnberg Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev