From nobody Mon Feb 9 17:36:32 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=zx2c4.com ARC-Seal: i=1; a=rsa-sha256; t=1666659040; cv=none; d=zohomail.com; s=zohoarc; b=C6Qj3m8cRIoU2fwhMW7afq2qya5po60Ii+xv5LGLS6o3SVIBw0V49pkCxJgQmJ5DnDiRrTXnj+BnUsUnouXK6nBUEEfvTAprPBKAyI8Ei6M3N1NtumVma2TwRkhQEmoQIr/E8C4KfK7GET+yTKpGyAa+UgCpum87gLfRWUIXS4E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1666659040; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=F5e4XKRRUsbA42Uj4xQzXOtzJtgRZcaiKVrqwgHgg5g=; b=VFrbW5+PpNrGCmn+KstnwJN7DntrR3YX3sNMHL3CkVl8DrssYlDDSXyT77U+GetCmMg87CxqIWIJdVYtfEKfR6wVlD44kLFurslQVN5FOv7kXQ1qXKXPqYJNZ2OfgSyck36E9s92GKreqqnx+yrZsodwuHOPr235A0OX8o+7aro= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1666659040034354.94849359351485; Mon, 24 Oct 2022 17:50:40 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1on83M-0004yP-PI; Mon, 24 Oct 2022 20:44:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1on83L-0004xx-2R for qemu-devel@nongnu.org; Mon, 24 Oct 2022 20:44:23 -0400 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1on83H-0005IX-Qu for qemu-devel@nongnu.org; Mon, 24 Oct 2022 20:44:22 -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 dfw.source.kernel.org (Postfix) with ESMTPS id E2235616D5; Tue, 25 Oct 2022 00:44:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A8DFC433D6; Tue, 25 Oct 2022 00:44:17 +0000 (UTC) Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 3bc31a94 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Tue, 25 Oct 2022 00:44:15 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="Vh2qZ0e7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1666658655; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F5e4XKRRUsbA42Uj4xQzXOtzJtgRZcaiKVrqwgHgg5g=; b=Vh2qZ0e72kVgiSk6ysZsrZCzv9wF7DKHupGJf5OOHcAxHsq1j0B4Gw6aPGRSVqIzEu0cnU yLs3k46Ap/bSCPEUlDC2tlj/EdkJgFUrbZjvStB4zhlOn/cSEOK6VZ3yErheyiI4yZbqpL VQPLJjjBE6OZbRegxWAc5U49fBjcyq4= From: "Jason A. Donenfeld" To: peter.maydell@linaro.org, pbonzini@redhat.com, qemu-devel@nongnu.org, richard.henderson@linaro.org Cc: "Jason A. Donenfeld" , Yoshinori Sato Subject: [PATCH v4 11/11] rx: re-randomize rng-seed on reboot Date: Tue, 25 Oct 2022 02:43:27 +0200 Message-Id: <20221025004327.568476-12-Jason@zx2c4.com> In-Reply-To: <20221025004327.568476-1-Jason@zx2c4.com> References: <20221025004327.568476-1-Jason@zx2c4.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2604:1380:4641:c500::1; envelope-from=SRS0=a4uw=22=zx2c4.com=Jason@kernel.org; helo=dfw.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=0.249, 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: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @zx2c4.com) X-ZM-MESSAGEID: 1666659042256100003 Content-Type: text/plain; charset="utf-8" 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: Yoshinori Sato Signed-off-by: Jason A. Donenfeld --- hw/rx/rx-gdbsim.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/rx/rx-gdbsim.c b/hw/rx/rx-gdbsim.c index 8ffe1b8035..47c17026c7 100644 --- a/hw/rx/rx-gdbsim.c +++ b/hw/rx/rx-gdbsim.c @@ -25,6 +25,7 @@ #include "hw/rx/rx62n.h" #include "sysemu/qtest.h" #include "sysemu/device_tree.h" +#include "sysemu/reset.h" #include "hw/boards.h" #include "qom/object.h" =20 @@ -148,6 +149,8 @@ static void rx_gdbsim_init(MachineState *machine) dtb_offset =3D ROUND_DOWN(machine->ram_size - dtb_size, 16); rom_add_blob_fixed("dtb", dtb, dtb_size, SDRAM_BASE + dtb_offset); + qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds, + rom_ptr(SDRAM_BASE + dtb_offset, dtb_size)= ); /* Set dtb address to R1 */ RX_CPU(first_cpu)->env.regs[1] =3D SDRAM_BASE + dtb_offset; } --=20 2.38.1