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 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BC18FCA0EFF for ; Sat, 30 Aug 2025 03:54:39 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4cDLqP0D1pz301N; Sat, 30 Aug 2025 13:54:25 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:f8b0:4864:20::1035" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1756526064; cv=none; b=cvnJNleNTCFyiiG3tx+ZqHN5T1FesSpVzq384HW8d1KGpN+Ln0peEw+VJDk8VYsHyxn/qy51U3b4LHzVnxu9jNwCVVNTSQibOT7ng3IInYcxbIABm2BmrgjICy2o56wnMB3jlB4yGWSlr0lV67DN6JGLTDc3ZR2Vco53dDvjqZjJRwybr5mlGRV1T9MbTEnRooDxEoHcxbKa81tVpjTOHD2mM+dt+RXB28HpJA5qxhV/RC5A3QsnLlUlE3YfUK5XkMv6pD/JSv3swQY1EwT4oZ7veNvI39fkRvNEy8JJo8YCZUvSJd8fR3bUULFvL2MTA49cqvTe0ZNa8dkXn4d4AQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1756526064; c=relaxed/relaxed; bh=UnEjBvCBPfdd66tSGMGFkkclxXHLvfhPSBG7DN3zyyI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L2L9eh3FgU6p9as+hykMWBS+GItkwSNze/l0od/Hf28Q1nWGYFGpIeEz09Omlz96llFmL2gNJzxsI2vizsDWTpk+dRWMH/8UgsFfvJ71Q+fOH/KiMpge7ePewLcTBL2WCX47/vMddyTl8y4d59i6gfkRbe0qg30NiMSynJuwaXjOH4JSSnM+iEzGDWR6+oqxYVUSqUt7aIRWlwD9n8VcLdObPLr048NteUghcg/uBuArafeiiSEXJL/mYBbsHr5+MUYhSMmA14CbX2NP3WAf0aEmgvN1popHi5gnTzgNJu4ymeeVmM9kAI/R+K/u/CId7E5iB+PcUpACRvCGv7YSfw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Cz3JarRG; dkim-atps=neutral; spf=pass (client-ip=2607:f8b0:4864:20::1035; helo=mail-pj1-x1035.google.com; envelope-from=ritesh.list@gmail.com; receiver=lists.ozlabs.org) smtp.mailfrom=gmail.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Cz3JarRG; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::1035; helo=mail-pj1-x1035.google.com; envelope-from=ritesh.list@gmail.com; receiver=lists.ozlabs.org) Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4cDLqN2vp2z2yyd for ; Sat, 30 Aug 2025 13:54:24 +1000 (AEST) Received: by mail-pj1-x1035.google.com with SMTP id 98e67ed59e1d1-32326e5f0bfso2263039a91.3 for ; Fri, 29 Aug 2025 20:54:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1756526062; x=1757130862; darn=lists.ozlabs.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=UnEjBvCBPfdd66tSGMGFkkclxXHLvfhPSBG7DN3zyyI=; b=Cz3JarRGtHLyvud8IyOxzgOahrHO0FuKs78SJ/MvYOV42QOajc8wPpt8XIAhm50zgf sGUKeRqn/ZcesM4aITgpCtRvFwldsUyUXI8XQSIb7zWfVkUKiKWRn+xG1qWi45Dh4ifh 0fHEtxh5QpHGO/ZChoqd4kBZKBvUsuXrSNQ4qIakAA0MGM5kr5G4Geg6iEzV8MbYqcOY IWfkZifZVuxGl55QH6ZwLkqNOkdyu4Lyrc0vvfIdheOxoTJiW/S51FkR96tQMGCUP9am KdUQWs5NIqm9zTiGpwiAeel4L2//utHYnAR+bofNFj2LEM4/kgFnqMkZuQElezt7GK4h Ikvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756526062; x=1757130862; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UnEjBvCBPfdd66tSGMGFkkclxXHLvfhPSBG7DN3zyyI=; b=DYyoVPYLRkYD0/Jqe55Af8+4lYy9qbeplP2kb46hDf874oa9x71Si2ZthwX9LNse0p F2xs/KQv3VGOTETmMrrDpyJxh6wsVmW8NEcIZ89qWtvFwxe1yXZt5+7gokWLmU+9p0qA ii8mclKj5d0HJHMQp6jK7U+DXkAEp37YD6DrIV0M+X4uXChrmCNqViF5hb6gr2AyDLEz ukzbdFV3sq6yXbwERX5xUfDSPP/Xk9ur2KbkLqiyg5fCOymAhinVHJLwt1n4Zw2t1vSF H9aCKZLBwIDBM5Eou4E2VFpGzvnjKZ7Nm52Om5z8jKLVp4Wtzd7aGkXFqTVmr6HTekLh OQ8A== X-Gm-Message-State: AOJu0YxOed/cRpvfRKavjLEHlPYh+ghLulGq0bsOgKCDLQsi3d6MdIS8 HlQMR3a496SVBMwrzaSslsT+fZJ7uOIKKADVKYT7/G+0aeuGkBFDIOBbTyJLNg== X-Gm-Gg: ASbGncu6/Menr4WQWLmRAzNNPvC52oYWh3NrkqD8ww97ZvuDDYQbg1yFbjXjaTgDH5W JuQGQlLxSDYToinai2kyvibt9/LYLyrME1bgEAQEcwtc2PXGKZTwVpIpDZ1o9+iqeBZ/hd6uykJ ADunjcI9jKLTkPGBYImCbZHBESD0nCL11lxhUUN1XGB8Iz8l3piYD1/KXweNFI/hySKRbx09uiL 6WqbmKR7iYZYGPiB3cnxhDU7aPOtco2HxhtbK1mqpXpXJEY+0K9AjfW3s5jljJcd1me6Ne+H4a9 Wm7KZJacIY62I38AlIcpnUhqf1dJZlibYnANYA9mNes5KY4E+7PQ/dVLiEA0fx+8x92SIpNvp37 gwxl/Fo6FR/P5Lso= X-Google-Smtp-Source: AGHT+IH+po0XYsGsDUXmUdlcqDccU/lKfxCdlmrXeZaEF5Hg4Rrs6dyUCCF3JmCysXOM45C8Ze7TWQ== X-Received: by 2002:a17:90b:48d0:b0:327:dce5:f635 with SMTP id 98e67ed59e1d1-328156dfca5mr1297394a91.25.1756526061640; Fri, 29 Aug 2025 20:54:21 -0700 (PDT) Received: from dw-tp ([171.76.86.139]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-327da90ee17sm4279879a91.24.2025.08.29.20.54.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Aug 2025 20:54:20 -0700 (PDT) From: "Ritesh Harjani (IBM)" To: linuxppc-dev@lists.ozlabs.org Cc: "Ritesh Harjani (IBM)" , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Mackerras , "Aneesh Kumar K.V" , Donet Tom Subject: [RFC 5/8] powerpc/ptdump: Dump PXX level info for kernel_page_tables Date: Sat, 30 Aug 2025 09:21:44 +0530 Message-ID: <3c3dfc8d2e6c45f9d0fc4a3f969b93a3b7520c46.1756522067.git.ritesh.list@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: References: X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch adds PGD/PUD/PMD/PTE level information while dumping kernel page tables. Before this patch it was hard to identify which entries belongs to which page table level e.g. ~ # dmesg |grep -i radix [0.000000] radix-mmu: Mapped 0x0000000000000000-0x0000000005400000 with 2.00 MiB pages (exec) [0.000000] radix-mmu: Mapped 0x0000000005400000-0x0000000040000000 with 2.00 MiB pages [0.000000] radix-mmu: Mapped 0x0000000040000000-0x0000000100000000 with 1.00 GiB pages [0.000000] radix-mmu: Initializing Radix MMU Before: ---[ Start of kernel VM ]--- 0xc000000000000000-0xc000000003ffffff XXX 64M r X pte valid present dirty accessed 0xc000000004000000-0xc00000003fffffff XXX 960M r w pte valid present dirty accessed 0xc000000040000000-0xc0000000ffffffff XXX 3G r w pte valid present dirty accessed ... ---[ vmemmap start ]--- 0xc00c000000000000-0xc00c0000003fffff XXX 4M r w pte valid present dirty accessed After: ---[ Start of kernel VM ]--- 0xc000000000000000-0xc000000003ffffff XXX 64M PMD r X pte valid present dirty accessed 0xc000000004000000-0xc00000003fffffff XXX 960M PMD r w pte valid present dirty accessed 0xc000000040000000-0xc0000000ffffffff XXX 3G PUD r w pte valid present dirty accessed ... ---[ vmemmap start ]--- 0xc00c000000000000-0xc00c0000003fffff XXX 4M PMD r w pte valid present dirty accessed Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: Paul Mackerras Cc: "Aneesh Kumar K.V" Cc: Donet Tom Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Ritesh Harjani (IBM) --- arch/powerpc/mm/ptdump/8xx.c | 5 +++++ arch/powerpc/mm/ptdump/book3s64.c | 5 +++++ arch/powerpc/mm/ptdump/ptdump.c | 1 + arch/powerpc/mm/ptdump/ptdump.h | 1 + arch/powerpc/mm/ptdump/shared.c | 5 +++++ 5 files changed, 17 insertions(+) diff --git a/arch/powerpc/mm/ptdump/8xx.c b/arch/powerpc/mm/ptdump/8xx.c index b5c79b11ea3c..1dc0f2438a73 100644 --- a/arch/powerpc/mm/ptdump/8xx.c +++ b/arch/powerpc/mm/ptdump/8xx.c @@ -71,18 +71,23 @@ static const struct flag_info flag_array[] = { struct pgtable_level pg_level[5] = { { /* pgd */ + .name = "PGD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* p4d */ + .name = "P4D", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pud */ + .name = "PUD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pmd */ + .name = "PMD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pte */ + .name = "PTX", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, diff --git a/arch/powerpc/mm/ptdump/book3s64.c b/arch/powerpc/mm/ptdump/book3s64.c index 5ad92d9dc5d1..79c9a8391042 100644 --- a/arch/powerpc/mm/ptdump/book3s64.c +++ b/arch/powerpc/mm/ptdump/book3s64.c @@ -104,18 +104,23 @@ static const struct flag_info flag_array[] = { struct pgtable_level pg_level[5] = { { /* pgd */ + .name = "PGD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* p4d */ + .name = "P4D", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pud */ + .name = "PUD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pmd */ + .name = "PMD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pte */ + .name = "PTE", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c index b2358d794855..0d499aebee72 100644 --- a/arch/powerpc/mm/ptdump/ptdump.c +++ b/arch/powerpc/mm/ptdump/ptdump.c @@ -178,6 +178,7 @@ static void dump_addr(struct pg_state *st, unsigned long addr) pt_dump_seq_printf(st->seq, REG "-" REG " ", st->start_address, addr - 1); pt_dump_seq_printf(st->seq, " " REG " ", st->start_pa); pt_dump_size(st->seq, addr - st->start_address); + pt_dump_seq_printf(st->seq, "%s ", pg_level[st->level].name); } static void note_prot_wx(struct pg_state *st, unsigned long addr) diff --git a/arch/powerpc/mm/ptdump/ptdump.h b/arch/powerpc/mm/ptdump/ptdump.h index 154efae96ae0..88cf28c4138e 100644 --- a/arch/powerpc/mm/ptdump/ptdump.h +++ b/arch/powerpc/mm/ptdump/ptdump.h @@ -13,6 +13,7 @@ struct flag_info { struct pgtable_level { const struct flag_info *flag; + char name[4]; size_t num; u64 mask; }; diff --git a/arch/powerpc/mm/ptdump/shared.c b/arch/powerpc/mm/ptdump/shared.c index 39c30c62b7ea..92d77f3e5155 100644 --- a/arch/powerpc/mm/ptdump/shared.c +++ b/arch/powerpc/mm/ptdump/shared.c @@ -69,18 +69,23 @@ static const struct flag_info flag_array[] = { struct pgtable_level pg_level[5] = { { /* pgd */ + .name = "PGD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* p4d */ + .name = "P4D", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pud */ + .name = "PUD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pmd */ + .name = "PMD", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, { /* pte */ + .name = "PTE", .flag = flag_array, .num = ARRAY_SIZE(flag_array), }, -- 2.50.1