From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7B07C3A5A3 for ; Tue, 27 Aug 2019 11:08:50 +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 B9636206BA for ; Tue, 27 Aug 2019 11:08:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iFTKmg8q" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B9636206BA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.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:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0ePbjuXiPFN/xdi58TGiZiNay8d2ZruD+o4XIfSkSnc=; b=iFTKmg8qQP0FmC pSyJ6GKcOORmKzJXH3tXANdQI/Jbm76z9Zx7Bh7TLk3DXZke9Z5sBNFB/QMs266jDhFc9KUDVh3Bs S0twC4N8FT2Q2ByAt6HEdryhBc45yyuyk145npPy2GjMhXBQPh7Zxq3/vGZ8lAd9Z1xGV+3+9n3qg Y5+fHmhKbi3mT5dFXrSLbMmqSTABcMWrrfxawnooFr48NHr1xXPwDE7K52tmWKK/nWCKP+r4UJaxi ms3CR4I7sNQYPktHNshIrXbk9iibkX4o43VWz88Heqhm2wv89q4oUlfqSoGCH4HD0sLcy93zpYOZZ rHOGFm5GXkelUiJTsHIA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i2ZL9-0005MF-DD; Tue, 27 Aug 2019 11:08:43 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i2ZL5-0005Ls-9b for linux-arm-kernel@lists.infradead.org; Tue, 27 Aug 2019 11:08:40 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 80E1E28; Tue, 27 Aug 2019 04:08:38 -0700 (PDT) Received: from lakrids.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0FAC73F718; Tue, 27 Aug 2019 04:08:37 -0700 (PDT) Date: Tue, 27 Aug 2019 12:08:36 +0100 From: Mark Rutland To: Will Deacon Subject: Re: [BOOTWRAPPER PATCH] Enable TME for lower exception levels Message-ID: <20190827110835.GC8000@lakrids.cambridge.arm.com> References: <20190823145015.15974-1-will@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190823145015.15974-1-will@kernel.org> User-Agent: Mutt/1.11.1+11 (2f07cb52) (2018-12-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190827_040839_375725_E8E15824 X-CRM114-Status: GOOD ( 13.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 23, 2019 at 03:50:15PM +0100, Will Deacon wrote: > By default, TME is not available to exception levels below EL3, so > enable it in SCR_EL3 if we detect that it is implemented. > > Signed-off-by: Will Deacon Applied, thanks! Mark. > --- > arch/aarch64/boot.S | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/aarch64/boot.S b/arch/aarch64/boot.S > index 74705cded338..c2fe92c90297 100644 > --- a/arch/aarch64/boot.S > +++ b/arch/aarch64/boot.S > @@ -48,6 +48,13 @@ _start: > orr x0, x0, #(1 << 16) // AP key enable > orr x0, x0, #(1 << 17) // AP insn enable > 1: > + /* Enable TME if present */ > + mrs x1, id_aa64isar0_el1 > + ubfx x1, x1, #24, #4 > + cbz x1, 1f > + > + orr x0, x0, #(1 << 34) // TME enable > +1: > #ifndef KERNEL_32 > orr x0, x0, #(1 << 10) // 64-bit EL2 > #endif > -- > 2.11.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel