From nobody Sun May 5 02:52:13 2024 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=1658233113; cv=none; d=zohomail.com; s=zohoarc; b=HCHASBDE4SSlAiXwSmFwopy/dyb87BaflSu0mkfjjZmzx8ROnglbRFOygMn0K12nd+ZKojG9QrUM7Yf0Cx3eY3yvnEdBSzOAecIQnec/QKbgaALaLAoNt+u0u3BQH2gWsg//Y6M+/xaqVbNzvplAVPReWShGdP2LuwUTFNA+pcM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1658233113; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=paFNJFgLRACHVN8LsQ6P3mttpkeistRrEsmmIMK2MLM=; b=eGzTCfXZu5lx+SqoEJeWKoIK2MuHr3JeeIOqLmdw3lzNfewXhMcpNQw/ezDqh6U3sGeE6Yc/xQhRstuDrydqxzHd+dPIaCBHCoBHLYZt9RmxQcnYNnfDfeX76+r65fut4Sb+3cpYxcqK05KfJS0AgC9tX3ogLtf2dkNNP8m0hps= 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 1658233113548552.2802052932257; Tue, 19 Jul 2022 05:18:33 -0700 (PDT) Received: from localhost ([::1]:60456 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oDmBM-0004rw-DP for importer@patchew.org; Tue, 19 Jul 2022 08:18:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52718) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDm93-0003Cn-SA for qemu-devel@nongnu.org; Tue, 19 Jul 2022 08:16:09 -0400 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]:47460) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDm91-0002MP-3O for qemu-devel@nongnu.org; Tue, 19 Jul 2022 08:16:09 -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 8079C6182C; Tue, 19 Jul 2022 12:16:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5F6EC341D1; Tue, 19 Jul 2022 12:16:04 +0000 (UTC) Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 5106a23b (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO); Tue, 19 Jul 2022 12:16:03 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="pnPJr8O9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1658232963; 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=paFNJFgLRACHVN8LsQ6P3mttpkeistRrEsmmIMK2MLM=; b=pnPJr8O9mfhQMOs92sjVgAaYFB2uuqIFvx5Bx/l2dTr3oQSIqrKvbJyZIP754wDJWU942H pPgrpeCm/eeehOLc5XxX9lMkM5VwZ1iGD2YpO4fLfuLrVuE5uXMxXEPUXctLehUzMts3na cO4oT91bTuQoXqtdlYxXkHwdoNuc3zs= From: "Jason A. Donenfeld" To: qemu-devel@nongnu.org Cc: "Jason A. Donenfeld" , =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH] hw/guest-loader: pass random seed to fdt Date: Tue, 19 Jul 2022 14:15:59 +0200 Message-Id: <20220719121559.135355-1-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=TnJG=XY=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, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @zx2c4.com) X-ZM-MESSAGEID: 1658233115355100001 If the FDT contains /chosen/rng-seed, then the Linux RNG will use it to initialize early. Set this using the usual guest random number generation function. This FDT node is part of the DT specification. Cc: Alex Benn=C3=A9e Signed-off-by: Jason A. Donenfeld --- hw/core/guest-loader.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/core/guest-loader.c b/hw/core/guest-loader.c index 391c875a29..4f8572693c 100644 --- a/hw/core/guest-loader.c +++ b/hw/core/guest-loader.c @@ -31,6 +31,7 @@ #include "hw/qdev-properties.h" #include "qapi/error.h" #include "qemu/module.h" +#include "qemu/guest-random.h" #include "guest-loader.h" #include "sysemu/device_tree.h" #include "hw/boards.h" @@ -46,6 +47,7 @@ static void loader_insert_platform_data(GuestLoaderState = *s, int size, g_autofree char *node =3D g_strdup_printf("/chosen/module@0x%08" PRIx6= 4, s->addr); uint64_t reg_attr[2] =3D {cpu_to_be64(s->addr), cpu_to_be64(size)}; + uint8_t rng_seed[32]; =20 if (!fdt) { error_setg(errp, "Cannot modify FDT fields if the machine has none= "); @@ -55,6 +57,9 @@ static void loader_insert_platform_data(GuestLoaderState = *s, int size, qemu_fdt_add_subnode(fdt, node); qemu_fdt_setprop(fdt, node, "reg", ®_attr, sizeof(reg_attr)); =20 + qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); + qemu_fdt_setprop(fdt, node, "rng-seed", rng_seed, sizeof(rng_seed)); + if (s->kernel) { const char *compat[2] =3D { "multiboot,module", "multiboot,kernel"= }; if (qemu_fdt_setprop_string_array(fdt, node, "compatible", --=20 2.35.1