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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 EFD74C352A4 for ; Wed, 12 Feb 2020 19:29:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BBE7E2173E for ; Wed, 12 Feb 2020 19:29:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581535781; bh=mdabRokLED+4jhfupLi/oSvq27BV+uW2QHySzTbAmx8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=v8e/A8a4GmmQdgFJOmH5MW5xN5kI83HV/6Z28CGbboevVlsRes44JbeQWleo3bf9x zitfn665HAFxHwIOMH1lHRr/29E/dwlDIMYI5ore+JcM0c4aHo/MQI6wXhQDS1b/4L 2AC29GO3k4Lqkdg4NkOJ7n3bhqmqDrnhjwPU4kDQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729219AbgBLT3k (ORCPT ); Wed, 12 Feb 2020 14:29:40 -0500 Received: from foss.arm.com ([217.140.110.172]:37194 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729169AbgBLT3g (ORCPT ); Wed, 12 Feb 2020 14:29:36 -0500 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 338BD106F; Wed, 12 Feb 2020 11:29:36 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 899633F68E; Wed, 12 Feb 2020 11:29:35 -0800 (PST) From: Mark Brown To: Catalin Marinas , Will Deacon Cc: Alexander Viro , Paul Elliott , Peter Zijlstra , Yu-cheng Yu , Amit Kachhap , Vincenzo Frascino , Marc Zyngier , Eugene Syromiatnikov , Szabolcs Nagy , "H . J . Lu " , Andrew Jones , Kees Cook , Arnd Bergmann , Jann Horn , Richard Henderson , =?UTF-8?q?Kristina=20Mart=C5=A1enko?= , Thomas Gleixner , Florian Weimer , Sudakshina Das , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, Mark Brown Subject: [PATCH v6 11/11] arm64: mm: Display guarded pages in ptdump Date: Wed, 12 Feb 2020 19:29:06 +0000 Message-Id: <20200212192906.53366-12-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200212192906.53366-1-broonie@kernel.org> References: <20200212192906.53366-1-broonie@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v8.5-BTI introduces the GP field in stage 1 translation tables which indicates that blocks and pages with it set are guarded pages for which branch target identification checks should be performed. Decode this when dumping the page tables to aid debugging. Signed-off-by: Mark Brown --- arch/arm64/mm/dump.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 860c00ec8bd3..78163b7a7dde 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -145,6 +145,11 @@ static const struct prot_bits pte_bits[] = { .val = PTE_UXN, .set = "UXN", .clear = " ", + }, { + .mask = PTE_GP, + .val = PTE_GP, + .set = "GP", + .clear = " ", }, { .mask = PTE_ATTRINDX_MASK, .val = PTE_ATTRINDX(MT_DEVICE_nGnRnE), -- 2.20.1