Message ID | 20200117152642.4905-3-broonie@kernel.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=7vUU=3G=lists.infradead.org=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0CA8F6C1 for <patchwork-linux-arm@patchwork.kernel.org>; Fri, 17 Jan 2020 15:26:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DE0162073A for <patchwork-linux-arm@patchwork.kernel.org>; Fri, 17 Jan 2020 15:26:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="GuRZBBMk"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sirena.org.uk header.i=@sirena.org.uk header.b="K34xgQDv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE0162073A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UvifCA4WcGMJD1XlLHGZhpY9Y6L7fW+8vif+cwta9dk=; b=GuRZBBMkjWJMvy OZ+7Dx+JQftLYCJ3xtaWv9XUSbSlk9+9FZA4xwpGe1MiQ2d6+JNCS2WT44mZKmdIXgHcjVPl4KIDj yxSx3wmaYY9PevgrEtLd9u3QVqSyA27GSHSxJro78MncJKyC6bZHZBUZDJp44UZSF//zNYFwK0FIA fPyk+Wjoj8jIlQxRu37sF++nXxosUv5mzb33t/5dV6In4weBRXb/t1lQoBVN4Mc6EXYHAEne6YKX5 WWyQhySheJsqMNm9P2oFoZt0cqu9s4uto21sB2hd1FvuxvaYhMzvYG7gt3859G3Ptj1uOv9BZfbhE XMb/hX4qpjO2SuNjsdWQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1isTWQ-0006Xf-BE; Fri, 17 Jan 2020 15:26:54 +0000 Received: from heliosphere.sirena.org.uk ([172.104.155.198]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1isTWL-0006Wj-IW for linux-arm-kernel@lists.infradead.org; Fri, 17 Jan 2020 15:26:53 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=qJkC6dW2ZVljeXY7Bkw+krWJcPHn9qUW3kJH5+UG+40=; b=K34xgQDv/NwyKtiaVt80i97YuW pxr9wSRLxqGmmt5JYuFj2Bbr0KhWvLC/pic6xbfiKxDe/hyVbXVVPV6syWy+gsr7OUMGlrZ7/gJOX KwB5ZUIHGRtEomZADAJtr7d37t4oC8DqdZy67EfidAlhL6zVAAPo8/sXr95AUPY5Jg4E=; Received: from fw-tnat-cam4.arm.com ([217.140.106.52] helo=fitzroy.sirena.org.uk) by heliosphere.sirena.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <broonie@sirena.org.uk>) id 1isTWF-0006mj-Ih; Fri, 17 Jan 2020 15:26:43 +0000 Received: by fitzroy.sirena.org.uk (Postfix, from userid 1000) id 3A422D02C26; Fri, 17 Jan 2020 15:26:43 +0000 (GMT) From: Mark Brown <broonie@kernel.org> To: Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com> Subject: [PATCH v11 2/2] arm64: Use v8.5-RNG entropy for KASLR seed Date: Fri, 17 Jan 2020 15:26:42 +0000 Message-Id: <20200117152642.4905-3-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200117152642.4905-1-broonie@kernel.org> References: <20200117152642.4905-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200117_072649_606283_80C6C464 X-CRM114-Status: UNSURE ( 9.59 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [172.104.155.198 listed in list.dnswl.org] 0.0 SPF_NONE SPF: sender does not publish an SPF Record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Cc: Mark Rutland <mark.rutland@arm.com>, Mark Brown <broonie@kernel.org>, Richard Henderson <richard.henderson@linaro.org>, linux-arm-kernel@lists.infradead.org, Ard Biesheuvel <ard.biesheuvel@linaro.org> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org |
Series |
ARMv8.5-RNG support
|
expand
|
diff --git a/arch/arm64/kernel/kaslr.c b/arch/arm64/kernel/kaslr.c index 2a11a962e571..53b8a4ee64ff 100644 --- a/arch/arm64/kernel/kaslr.c +++ b/arch/arm64/kernel/kaslr.c @@ -120,6 +120,17 @@ u64 __init kaslr_early_init(u64 dt_phys) return 0; } + /* + * Mix in any entropy obtainable architecturally, open coded + * since this runs extremely early. + */ + if (__early_cpu_has_rndr()) { + unsigned long raw; + + if (__arm64_rndr(&raw)) + seed ^= raw; + } + if (!seed) { kaslr_status = KASLR_DISABLED_NO_SEED; return 0;