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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 3ABEFCA9ED1 for ; Fri, 1 Nov 2019 14:11:00 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0695D222D1 for ; Fri, 1 Nov 2019 14:11:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0695D222D1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3B9DE6B0006; Fri, 1 Nov 2019 10:10:59 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 369246B0286; Fri, 1 Nov 2019 10:10:59 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2B1866B0288; Fri, 1 Nov 2019 10:10:59 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0077.hostedemail.com [216.40.44.77]) by kanga.kvack.org (Postfix) with ESMTP id 06F176B0006 for ; Fri, 1 Nov 2019 10:10:58 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id A46D5181AEF1E for ; Fri, 1 Nov 2019 14:10:58 +0000 (UTC) X-FDA: 76107894996.20.bat46_42b0e66e93833 X-HE-Tag: bat46_42b0e66e93833 X-Filterd-Recvd-Size: 3674 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Fri, 1 Nov 2019 14:10:58 +0000 (UTC) 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 A8CC47A7; Fri, 1 Nov 2019 07:10:57 -0700 (PDT) Received: from e112269-lin.cambridge.arm.com (e112269-lin.cambridge.arm.com [10.1.194.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1F1813F718; Fri, 1 Nov 2019 07:10:55 -0700 (PDT) From: Steven Price To: Andrew Morton , linux-mm@kvack.org Cc: Steven Price , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Dave Hansen , Ingo Molnar , James Morse , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Peter Zijlstra , Thomas Gleixner , Will Deacon , x86@kernel.org, "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Rutland , "Liang, Kan" Subject: [PATCH v15 22/23] arm64: mm: Display non-present entries in ptdump Date: Fri, 1 Nov 2019 14:09:41 +0000 Message-Id: <20191101140942.51554-23-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191101140942.51554-1-steven.price@arm.com> References: <20191101140942.51554-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Previously the /sys/kernel/debug/kernel_page_tables file would only show lines for entries present in the page tables. However it is useful to also show non-present entries as this makes the size and level of the holes more visible. This aligns the behaviour with x86 which also shows holes. Acked-by: Catalin Marinas Signed-off-by: Steven Price --- arch/arm64/mm/dump.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 9d9b740a86d2..3203dd8e6d0a 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -269,21 +269,22 @@ static void note_page(struct ptdump_state *pt_st, u= nsigned long addr, int level, if (st->current_prot) { note_prot_uxn(st, addr); note_prot_wx(st, addr); - pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", + } + + pt_dump_seq_printf(st->seq, "0x%016lx-0x%016lx ", st->start_address, addr); =20 - delta =3D (addr - st->start_address) >> 10; - while (!(delta & 1023) && unit[1]) { - delta >>=3D 10; - unit++; - } - pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, - pg_level[st->level].name); - if (pg_level[st->level].bits) - dump_prot(st, pg_level[st->level].bits, - pg_level[st->level].num); - pt_dump_seq_puts(st->seq, "\n"); + delta =3D (addr - st->start_address) >> 10; + while (!(delta & 1023) && unit[1]) { + delta >>=3D 10; + unit++; } + pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit, + pg_level[st->level].name); + if (st->current_prot && pg_level[st->level].bits) + dump_prot(st, pg_level[st->level].bits, + pg_level[st->level].num); + pt_dump_seq_puts(st->seq, "\n"); =20 if (addr >=3D st->marker[1].start_address) { st->marker++; --=20 2.20.1