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 96189C636CD for ; Fri, 10 Feb 2023 11:34:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231883AbjBJLeG (ORCPT ); Fri, 10 Feb 2023 06:34:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231631AbjBJLeD (ORCPT ); Fri, 10 Feb 2023 06:34:03 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 277737716C for ; Fri, 10 Feb 2023 03:33:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1676028787; h=from:from:reply-to: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=YZtTCvjUY3Bplco/nrch2W/siWy5iQ7rmzXTCAqINh0=; b=feg08sBC9SfltuhrAZcZW2AowYp3osmfYKnG1VmDvN1ac/LGwaBU4QXpnVM1NP2uWGOYXc 9Zh5AF+hylQLN2cNsrN8aW6uFl9l41DryBmFWUAcIh3bvFf/Ad+et+XnnQy/qrnygpIm7M d+hVIdh+Id5uhno+LrCA81PWDwCwN1o= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-43-Q9sCMfavMO2mVJJ_AgjtQQ-1; Fri, 10 Feb 2023 06:33:04 -0500 X-MC-Unique: Q9sCMfavMO2mVJJ_AgjtQQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5E068857F42; Fri, 10 Feb 2023 11:33:03 +0000 (UTC) Received: from redhat.com (unknown [10.33.36.76]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 269E42026D68; Fri, 10 Feb 2023 11:33:00 +0000 (UTC) Date: Fri, 10 Feb 2023 11:32:58 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: "Michael S. Tsirkin" Cc: qemu-devel@nongnu.org, "Jason A. Donenfeld" , x86@kernel.org, linux-kernel@vger.kernel.org, Dov Murik , Tom Lendacky , Gerd Hoffmann , Paolo Bonzini , Richard Henderson , "H . Peter Anvin" , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Nathan Chancellor , Borislav Petkov , Eric Biggers Subject: Re: [PATCH RFC 0/7] revert RNG seed mess Message-ID: Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= References: <20230208211212.41951-1-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230208211212.41951-1-mst@redhat.com> User-Agent: Mutt/2.2.9 (2022-11-12) X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 08, 2023 at 04:12:23PM -0500, Michael S. Tsirkin wrote: > All attempts to fix up passing RNG seed via setup_data entry failed. > Let's just rip out all of it. We'll start over. > > > Warning: all I did was git revert the relevant patches and resolve the > (trivial) conflicts. Not even compiled - it's almost midnight here. > > Jason this is the kind of approach I'd like to see, not yet another > pointer math rich patch I need to spend time reviewing. Just get us back > to where we started. We can redo "x86: use typedef for SetupData struct" > later if we want, it's benign. This approach looks suitable for applying to the 7.2 tree too, which will be good for fixing the regressions in stable. > > Could you do something like this pls? > Or test and ack if this patchset happens to work by luck. > > Michael S. Tsirkin (7): > Revert "x86: don't let decompressed kernel image clobber setup_data" > Revert "x86: do not re-randomize RNG seed on snapshot load" > Revert "x86: re-initialize RNG seed when selecting kernel" > Revert "x86: reinitialize RNG seed on system reboot" > Revert "x86: use typedef for SetupData struct" > Revert "x86: return modified setup_data only if read as memory, not as > file" > Revert "hw/i386: pass RNG seed via setup_data entry" > > include/hw/i386/microvm.h | 5 +- > include/hw/i386/pc.h | 3 - > include/hw/i386/x86.h | 3 +- > include/hw/nvram/fw_cfg.h | 31 ---------- > hw/i386/microvm.c | 17 ++---- > hw/i386/pc.c | 4 +- > hw/i386/pc_piix.c | 2 - > hw/i386/pc_q35.c | 2 - > hw/i386/x86.c | 122 ++++++++++---------------------------- > hw/nvram/fw_cfg.c | 21 ++----- > 10 files changed, 49 insertions(+), 161 deletions(-) > > -- > MST > With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|