From patchwork Fri Oct 14 02:16:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Jason A. Donenfeld" X-Patchwork-Id: 13006597 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 E1032C433FE for ; Fri, 14 Oct 2022 02:24:18 +0000 (UTC) Received: from localhost ([::1]:49204 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ojAMz-0005d0-Ra for qemu-devel@archiver.kernel.org; Thu, 13 Oct 2022 22:24:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37716) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ojAGK-0000d4-Cp for qemu-devel@nongnu.org; Thu, 13 Oct 2022 22:17:24 -0400 Received: from ams.source.kernel.org ([145.40.68.75]:57380) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ojAGI-0001h4-RK for qemu-devel@nongnu.org; Thu, 13 Oct 2022 22:17:24 -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 7F128B821BD; Fri, 14 Oct 2022 02:17:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F5C8C433C1; Fri, 14 Oct 2022 02:17:18 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="CWGZz96R" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1665713837; 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: in-reply-to:in-reply-to:references:references; bh=t+BhYJUhXZsHjbhx8IikzKrJhDyCzNYAGGei1bRY/e0=; b=CWGZz96RuxvlI0V0Nxz8l5GbWXTkc6UftiuzAf28uzRFKIs24WsITNVRI8gCTeaBP2RlcW xdJqw0R7sNplV6VCO981EGbfD8NdL9BBqSHs1QG4FO0glb1x/l14TXi497wgPB764J3RqL wEglMnbX8HJeGr1tyHYqk2k5+x7k9OQ= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id a7925556 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Fri, 14 Oct 2022 02:17:17 +0000 (UTC) From: "Jason A. Donenfeld" To: peter.maydell@linaro.org, pbonzini@redhat.com, qemu-devel@nongnu.org, richard.henderson@linaro.org Cc: "Jason A. Donenfeld" , Aleksandar Rikalo , Paul Burton , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v3 8/8] mips: re-randomize rng-seed on reboot Date: Thu, 13 Oct 2022 20:16:53 -0600 Message-Id: <20221014021653.1461512-9-Jason@zx2c4.com> In-Reply-To: <20221014021653.1461512-1-Jason@zx2c4.com> References: <20221014021653.1461512-1-Jason@zx2c4.com> MIME-Version: 1.0 Received-SPF: pass client-ip=145.40.68.75; envelope-from=SRS0=NTzD=2P=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 the FDT has should be re-randomized, so that the new boot gets a new seed. Since the FDT is in the ROM region at this point, we add a hook right after the ROM has been added, so that we have a pointer to that copy of the FDT. Cc: Aleksandar Rikalo Cc: Paul Burton Cc: Philippe Mathieu-Daudé Signed-off-by: Jason A. Donenfeld --- hw/mips/boston.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/mips/boston.c b/hw/mips/boston.c index d2ab9da1a0..cab63f43bf 100644 --- a/hw/mips/boston.c +++ b/hw/mips/boston.c @@ -41,6 +41,7 @@ #include "sysemu/sysemu.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" +#include "sysemu/reset.h" #include #include "qom/object.h" @@ -810,6 +811,8 @@ static void boston_mach_init(MachineState *machine) /* Calculate real fdt size after filter */ dt_size = fdt_totalsize(dtb_load_data); rom_add_blob_fixed("dtb", dtb_load_data, dt_size, dtb_paddr); + qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds, + rom_ptr(dtb_paddr, dt_size)); } else { /* Try to load file as FIT */ fit_err = load_fit(&boston_fit_loader, machine->kernel_filename, s);