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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED 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 7F9A3C282C8 for ; Mon, 28 Jan 2019 09:16:45 +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 4E54A20844 for ; Mon, 28 Jan 2019 09:16:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="LwqM4tVO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4E54A20844 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:MIME-Version:References:In-Reply-To: Subject:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gZ0nfgjT0qhYaH1gwc2i9MByPLyWsajwobLuxvjQOEY=; b=LwqM4tVOyaCL8z 1wuFCbN2eTw2pdVasbkm3dCgqk0ZSsLkpDP2K+BE5pHqRVcoIVgeV9I9ZhJ+5Ui0fsV/RaF9bnsHX NmijV27/VBzHkB3ougryN1Arjlp/MpD09B4rI9+YuF8HOgV6t5/zcJQ+gZ2SrAcfLzj7tW9MtLgGf 0rr3ebPANgABPzTpUxWHgbgP3POenZKVp89V71EZ6DMyfMoZKx5C59qnY5VovdOL7a5KWMUPM5cwu EYLZ3DhJdsEndLg9ucmqfXCayY7GKri/8EizfpzbhCcDY8sSJ+9vb6zTTC0dTC6ZrDdUMq2EMLkDQ 8Z1EV81omiLkG1fp78TA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1go31s-0005Em-5c; Mon, 28 Jan 2019 09:16:32 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1go31p-0005EK-5g for linux-arm-kernel@lists.infradead.org; Mon, 28 Jan 2019 09:16:30 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 59BE2EBD; Mon, 28 Jan 2019 01:16:26 -0800 (PST) Received: from big-swifty.misterjones.org (big-swifty.cambridge.arm.com [10.1.39.122]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3B4373F589; Mon, 28 Jan 2019 01:16:23 -0800 (PST) Date: Mon, 28 Jan 2019 09:16:21 +0000 Message-ID: <86munlw3a2.wl-marc.zyngier@arm.com> From: Marc Zyngier To: Julien Thierry Subject: Re: [PATCH v8 01/26] arm64: Fix HCR.TGE status for NMI contexts In-Reply-To: <1546956464-48825-2-git-send-email-julien.thierry@arm.com> References: <1546956464-48825-1-git-send-email-julien.thierry@arm.com> <1546956464-48825-2-git-send-email-julien.thierry@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/25.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Organization: ARM Ltd MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190128_011629_218552_53016F61 X-CRM114-Status: GOOD ( 13.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, linux-arch@vger.kernel.org, daniel.thompson@linaro.org, Arnd Bergmann , catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, christoffer.dall@arm.com, james.morse@arm.com, joel@joelfernandes.org, 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 Tue, 08 Jan 2019 14:07:19 +0000, Julien Thierry wrote: > > When using VHE, the host needs to clear HCR_EL2.TGE bit in order > to interract with guest TLBs, switching from EL2&0 translation regime > to EL1&0. > > However, some non-maskable asynchronous event could happen while TGE is > cleared like SDEI. Because of this address translation operations > relying on EL2&0 translation regime could fail (tlb invalidation, > userspace access, ...). > > Fix this by properly setting HCR_EL2.TGE when entering NMI context and > clear it if necessary when returning to the interrupted context. > > Signed-off-by: Julien Thierry > Suggested-by: Marc Zyngier > Cc: Arnd Bergmann > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Marc Zyngier > Cc: James Morse > Cc: linux-arch@vger.kernel.org > Cc: stable@vger.kernel.org Reviewed-by: Marc Zyngier Thanks, M. -- Jazz is not dead, it just smell funny. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel