From patchwork Fri Apr 9 06:15:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Ghiti X-Patchwork-Id: 12193133 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 F0309C433B4 for ; Fri, 9 Apr 2021 06:18:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9CB9761057 for ; Fri, 9 Apr 2021 06:18:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9CB9761057 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ghiti.fr Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2FD806B006C; Fri, 9 Apr 2021 02:18:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2AD806B006E; Fri, 9 Apr 2021 02:18:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 14FA26B0070; Fri, 9 Apr 2021 02:18:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0214.hostedemail.com [216.40.44.214]) by kanga.kvack.org (Postfix) with ESMTP id E99466B006C for ; Fri, 9 Apr 2021 02:18:35 -0400 (EDT) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id AA62A173084D for ; Fri, 9 Apr 2021 06:18:35 +0000 (UTC) X-FDA: 78011824590.26.EDC731D Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by imf14.hostedemail.com (Postfix) with ESMTP id 9439FC0001EE for ; Fri, 9 Apr 2021 06:18:29 +0000 (UTC) X-Originating-IP: 81.185.169.105 Received: from localhost.localdomain (105.169.185.81.rev.sfr.net [81.185.169.105]) (Authenticated sender: alex@ghiti.fr) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id BFF84FF803; Fri, 9 Apr 2021 06:18:28 +0000 (UTC) From: Alexandre Ghiti To: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Arnd Bergmann , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-arch@vger.kernel.org, linux-mm@kvack.org Cc: Alexandre Ghiti , Anup Patel Subject: [PATCH v4 3/3] riscv: Prepare ptdump for vm layout dynamic addresses Date: Fri, 9 Apr 2021 02:15:00 -0400 Message-Id: <20210409061500.14673-4-alex@ghiti.fr> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210409061500.14673-1-alex@ghiti.fr> References: <20210409061500.14673-1-alex@ghiti.fr> MIME-Version: 1.0 X-Stat-Signature: gazgbq7ma6rexm9ij9jwm5ma5f8io8dp X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9439FC0001EE Received-SPF: none (ghiti.fr>: No applicable sender policy available) receiver=imf14; identity=mailfrom; envelope-from=""; helo=relay9-d.mail.gandi.net; client-ip=217.70.183.199 X-HE-DKIM-Result: none/none X-HE-Tag: 1617949109-412679 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: This is a preparatory patch for sv48 support that will introduce dynamic PAGE_OFFSET. Dynamic PAGE_OFFSET implies that all zones (vmalloc, vmemmap, fixaddr...) whose addresses depend on PAGE_OFFSET become dynamic and can't be used to statically initialize the array used by ptdump to identify the different zones of the vm layout. Signed-off-by: Alexandre Ghiti Reviewed-by: Anup Patel --- arch/riscv/mm/ptdump.c | 67 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 55 insertions(+), 12 deletions(-) diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c index ace74dec7492..aa1b3bce61ab 100644 --- a/arch/riscv/mm/ptdump.c +++ b/arch/riscv/mm/ptdump.c @@ -58,29 +58,52 @@ struct ptd_mm_info { unsigned long end; }; +enum address_markers_idx { +#ifdef CONFIG_KASAN + KASAN_SHADOW_START_NR, + KASAN_SHADOW_END_NR, +#endif + FIXMAP_START_NR, + FIXMAP_END_NR, + PCI_IO_START_NR, + PCI_IO_END_NR, +#ifdef CONFIG_SPARSEMEM_VMEMMAP + VMEMMAP_START_NR, + VMEMMAP_END_NR, +#endif + VMALLOC_START_NR, + VMALLOC_END_NR, + PAGE_OFFSET_NR, + MODULES_MAPPING_NR, + KERNEL_MAPPING_NR, + END_OF_SPACE_NR +}; + static struct addr_marker address_markers[] = { #ifdef CONFIG_KASAN - {KASAN_SHADOW_START, "Kasan shadow start"}, - {KASAN_SHADOW_END, "Kasan shadow end"}, + {0, "Kasan shadow start"}, + {0, "Kasan shadow end"}, #endif - {FIXADDR_START, "Fixmap start"}, - {FIXADDR_TOP, "Fixmap end"}, - {PCI_IO_START, "PCI I/O start"}, - {PCI_IO_END, "PCI I/O end"}, + {0, "Fixmap start"}, + {0, "Fixmap end"}, + {0, "PCI I/O start"}, + {0, "PCI I/O end"}, #ifdef CONFIG_SPARSEMEM_VMEMMAP - {VMEMMAP_START, "vmemmap start"}, - {VMEMMAP_END, "vmemmap end"}, + {0, "vmemmap start"}, + {0, "vmemmap end"}, #endif - {VMALLOC_START, "vmalloc() area"}, - {VMALLOC_END, "vmalloc() end"}, - {PAGE_OFFSET, "Linear mapping"}, + {0, "vmalloc() area"}, + {0, "vmalloc() end"}, + {0, "Linear mapping"}, + {0, "Modules mapping"}, + {0, "Kernel mapping (kernel, BPF)"}, {-1, NULL}, }; static struct ptd_mm_info kernel_ptd_info = { .mm = &init_mm, .markers = address_markers, - .base_addr = KERN_VIRT_START, + .base_addr = 0, .end = ULONG_MAX, }; @@ -335,6 +358,26 @@ static int ptdump_init(void) { unsigned int i, j; +#ifdef CONFIG_KASAN + address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START; + address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END; +#endif + address_markers[FIXMAP_START_NR].start_address = FIXADDR_START; + address_markers[FIXMAP_END_NR].start_address = FIXADDR_TOP; + address_markers[PCI_IO_START_NR].start_address = PCI_IO_START; + address_markers[PCI_IO_END_NR].start_address = PCI_IO_END; +#ifdef CONFIG_SPARSEMEM_VMEMMAP + address_markers[VMEMMAP_START_NR].start_address = VMEMMAP_START; + address_markers[VMEMMAP_END_NR].start_address = VMEMMAP_END; +#endif + address_markers[VMALLOC_START_NR].start_address = VMALLOC_START; + address_markers[VMALLOC_END_NR].start_address = VMALLOC_END; + address_markers[PAGE_OFFSET_NR].start_address = PAGE_OFFSET; + address_markers[MODULES_MAPPING_NR].start_address = MODULES_VADDR; + address_markers[KERNEL_MAPPING_NR].start_address = kernel_virt_addr; + + kernel_ptd_info.base_addr = KERN_VIRT_START; + for (i = 0; i < ARRAY_SIZE(pg_level); i++) for (j = 0; j < ARRAY_SIZE(pte_bits); j++) pg_level[i].mask |= pte_bits[j].mask;