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 62F1FC33CB6 for ; Wed, 22 Jan 2020 21:22:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2520921835 for ; Wed, 22 Jan 2020 21:22:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579728151; bh=aJUS26heAh5M9D0bn8aSE7VXAtekcLMDX50NFf+7Qf0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fKsX3jmtO/JX9DSUHRBOJ69T5RY3iL7xH41OkfGyOvyjE+219spTtCp+oBX3eu0zE QQz7FZ91Jkc/LdCxdsrASnkmfWLovsfLQfb62jenmGeqduDqVi2yYi/nigAgHqMXl6 2gJzLTrDRM0er/ABevpI3ylj5/Kd4+oI7fo2a7ZE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729440AbgAVVW1 (ORCPT ); Wed, 22 Jan 2020 16:22:27 -0500 Received: from foss.arm.com ([217.140.110.172]:32856 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729429AbgAVVW0 (ORCPT ); Wed, 22 Jan 2020 16:22:26 -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 331AA1435; Wed, 22 Jan 2020 13:22:26 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 814C93F52E; Wed, 22 Jan 2020 13:22:25 -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 v5 12/12] arm64: mm: Display guarded pages in ptdump Date: Wed, 22 Jan 2020 21:21:44 +0000 Message-Id: <20200122212144.6409-13-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200122212144.6409-1-broonie@kernel.org> References: <20200122212144.6409-1-broonie@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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 Reviewed-by: Catalin Marinas --- 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 0a920b538a89..880bd5160dc2 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -143,6 +143,11 @@ 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