From patchwork Tue Oct 11 20:46:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason A. Donenfeld" X-Patchwork-Id: 13004330 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 899BAC433F5 for ; Tue, 11 Oct 2022 20:54:18 +0000 (UTC) Received: from localhost ([::1]:60764 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oiMGX-0003vu-Jy for qemu-devel@archiver.kernel.org; Tue, 11 Oct 2022 16:54:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49662) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oiM9S-0004Vj-RX for qemu-devel@nongnu.org; Tue, 11 Oct 2022 16:46:59 -0400 Received: from ams.source.kernel.org ([145.40.68.75]:41054) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oiM9Q-0001P3-PZ for qemu-devel@nongnu.org; Tue, 11 Oct 2022 16:46:58 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 841A6B8168D; Tue, 11 Oct 2022 20:46:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2D15C433C1; Tue, 11 Oct 2022 20:46:52 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="EgpAh8FJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1665521211; 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: content-transfer-encoding:content-transfer-encoding; bh=66X67Mvu99H68EBWU8PKVBhaHW8e3GjJOQd9gSDewO4=; b=EgpAh8FJ3xH3R+/JumnfYqScC1CKnWT4N0K2IQaLBWfH63yXO0W5+n87taGuuyLcXRv1Qd MBU3w5983nuPZZlM/cTx3/SNv8cV16hD/xoJ4K/i2mwCjCyIbnKd2xmeMXIIQNNCUzSlY2 Xkfg+3oDPe5ezJICmvaovUoQgUHH9uc= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id ebfe1449 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Tue, 11 Oct 2022 20:46:51 +0000 (UTC) From: "Jason A. Donenfeld" To: peter.maydell@linaro.org, pbonzini@redhat.com, qemu-devel@nongnu.org Cc: "Jason A. Donenfeld" Subject: [PATCH v2 0/8] rerandomize RNG seeds on reboot and handle record&replay Date: Tue, 11 Oct 2022 14:46:37 -0600 Message-Id: <20221011204645.1160916-1-Jason@zx2c4.com> MIME-Version: 1.0 Received-SPF: pass client-ip=145.40.68.75; envelope-from=SRS0=aME8=2M=zx2c4.com=Jason@kernel.org; helo=ams.source.kernel.org X-Spam_score_int: -67 X-Spam_score: -6.8 X-Spam_bar: ------ X-Spam_report: (-6.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When the system reboots, the rng seed that QEMU passes should be re-randomized, so that the new boot gets a new seed. This series wires that up for FDT. Then, since the record&replay subsystem makes use of reset as well, we add a new reset cause for record&replay, so that we can avoid re-randomizing in these cases. Jason A. Donenfeld (8): device-tree: add re-randomization helper function arm: re-randomize rng-seed on reboot riscv: re-randomize rng-seed on reboot openrisc: re-randomize rng-seed on reboot rx: re-randomize rng-seed on reboot mips: re-randomize rng-seed on reboot reset: allow registering handlers that aren't called by snapshot loading reset: do not re-randomize RNG seed on snapshot load hw/arm/aspeed.c | 4 ++-- hw/arm/boot.c | 2 ++ hw/arm/mps2-tz.c | 4 ++-- hw/core/reset.c | 15 ++++++++++++++- hw/hppa/machine.c | 4 ++-- hw/i386/microvm.c | 4 ++-- hw/i386/pc.c | 6 +++--- hw/i386/x86.c | 2 +- hw/mips/boston.c | 3 +++ hw/openrisc/boot.c | 3 +++ hw/ppc/pegasos2.c | 4 ++-- hw/ppc/pnv.c | 4 ++-- hw/ppc/spapr.c | 4 ++-- hw/riscv/boot.c | 3 +++ hw/rx/rx-gdbsim.c | 3 +++ hw/s390x/s390-virtio-ccw.c | 4 ++-- include/hw/boards.h | 2 +- include/sysemu/device_tree.h | 9 +++++++++ include/sysemu/reset.h | 5 ++++- migration/savevm.c | 2 +- qapi/run-state.json | 4 +++- softmmu/device_tree.c | 21 +++++++++++++++++++++ softmmu/runstate.c | 4 ++-- 23 files changed, 89 insertions(+), 27 deletions(-)