From nobody Wed May 22 03:19:28 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=none dis=none) header.from=zx2c4.com ARC-Seal: i=1; a=rsa-sha256; t=1655898473; cv=none; d=zohomail.com; s=zohoarc; b=enfTA36LHNa5Yw3vlirIwHaUI6iVReOZh4SnEFWhUmsqsTrYMAqADfbgy9Mit1wYWCZgoRezru+TDOfF8GqTIbkjCRppp+9Gv6h6/mffsFIa1ka8oIgygvOi/Z664MEVHnfgzwAOSUM7rObJ4JzCIZ4diC3u0rPO4sb64KtHcAQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1655898473; 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=c6zeBGUvw+slSLWmpUrVML59rfJPYwSVd+GNl0CKGOw=; b=CyR/bk0uTQIZYeaWnhNsDxTIqRN98wuY9aNsqIfBZi4tOaPzy9jQN+lmb6NAbzlVc34TqwatVIpr4Rer6hqR34XrwVRr7WFy3eLxskbdUqp4arOKWqb7HXuhoWCx8CilIRJLcGaFIKeucI0poUihJ3NYoHeC5oMYgspmmBWI4Mo= 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=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1655898473833178.99482330472824; Wed, 22 Jun 2022 04:47:53 -0700 (PDT) Received: from localhost ([::1]:32920 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o3ypr-0000Q7-Tx for importer@patchew.org; Wed, 22 Jun 2022 07:47:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35148) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o3ynw-0007z7-Q8 for qemu-devel@nongnu.org; Wed, 22 Jun 2022 07:45:52 -0400 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]:37752) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o3ynu-0007KM-Oc for qemu-devel@nongnu.org; Wed, 22 Jun 2022 07:45:52 -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 386BE61705; Wed, 22 Jun 2022 11:45:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 43F53C34114; Wed, 22 Jun 2022 11:45:40 +0000 (UTC) Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id cf779c80 (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO); Wed, 22 Jun 2022 11:45:38 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="SgQ/A6hK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1655898338; 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=c6zeBGUvw+slSLWmpUrVML59rfJPYwSVd+GNl0CKGOw=; b=SgQ/A6hKhecuoPDxFYBPNQhvnbnHRwugM76N7EwDyUL1Ue+7tqul+Frd9b2P0AFTaJE3tA N2zBE7yv89Fsai7OM1vGJZOWM6Gr4xG+5TWAll6QlA1NuTcJBuVhbhbX89jhOeSmoSIG+Q QpHhyl13DE8QNqUhNwSuWXYTDFF42Ac= From: "Jason A. Donenfeld" To: qemu-devel@nongnu.org Cc: "Jason A. Donenfeld" , Stafford Horne Subject: [PATCH v2] hw/openrisc: virt: pass random seed to fdt Date: Wed, 22 Jun 2022 13:45:13 +0200 Message-Id: <20220622114513.293882-1-Jason@zx2c4.com> In-Reply-To: References: 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=9o3N=W5=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: 1655898475140100001 Content-Type: text/plain; charset="utf-8" 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 is confirmed to successfully initialize the RNG on Linux 5.19-rc2. Cc: Stafford Horne Signed-off-by: Jason A. Donenfeld --- Changes v1->v2: - This is rebased on top of your "or1k-virt-2" branch. - It makes the change to the new "virt" platform, since that's where it makes most sense to have. hw/openrisc/virt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/openrisc/virt.c b/hw/openrisc/virt.c index 13b0a1d7dc..f1d62fcb7d 100644 --- a/hw/openrisc/virt.c +++ b/hw/openrisc/virt.c @@ -19,6 +19,7 @@ =20 #include "qemu/osdep.h" #include "qemu/error-report.h" +#include "qemu/guest-random.h" #include "qapi/error.h" #include "cpu.h" #include "exec/address-spaces.h" @@ -141,6 +142,7 @@ static void openrisc_create_fdt(OR1KVirtState *state, void *fdt; int cpu; char *nodename; + uint8_t rng_seed[32]; =20 fdt =3D state->fdt =3D create_device_tree(&state->fdt_size); if (!fdt) { @@ -197,6 +199,10 @@ static void openrisc_create_fdt(OR1KVirtState *state, qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } =20 + /* Pass seed to RNG. */ + qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); + qemu_fdt_setprop(fdt, "/chosen", "rng-seed", rng_seed, sizeof(rng_seed= )); + /* Create aliases node for use by devices. */ qemu_fdt_add_subnode(fdt, "/aliases"); } --=20 2.35.1