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Anshuman KhandualandWill Deacon
c34d4d48c4
ptdesc_t sounds very similar to the core MM struct ptdesc which is actually the memory descriptor for page table allocations. Hence rename this typedef element as ptval_t instead for better clarity and separation. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: linux-efi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Suggested-by: David Hildenbrand (Arm) <david@kernel.org> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014 ARM Ltd.
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*/
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#ifndef __ASM_PTDUMP_H
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#define __ASM_PTDUMP_H
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#include <linux/ptdump.h>
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DECLARE_STATIC_KEY_FALSE(arm64_ptdump_lock_key);
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#ifdef CONFIG_PTDUMP
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#include <linux/mm_types.h>
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#include <linux/seq_file.h>
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struct addr_marker {
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unsigned long start_address;
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char *name;
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};
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struct ptdump_info {
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struct mm_struct *mm;
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const struct addr_marker *markers;
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unsigned long base_addr;
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};
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struct ptdump_prot_bits {
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ptval_t mask;
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ptval_t val;
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const char *set;
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const char *clear;
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};
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struct ptdump_pg_level {
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const struct ptdump_prot_bits *bits;
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char name[4];
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int num;
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ptval_t mask;
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};
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/*
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* The page dumper groups page table entries of the same type into a single
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* description. It uses pg_state to track the range information while
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* iterating over the pte entries. When the continuity is broken it then
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* dumps out a description of the range.
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*/
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struct ptdump_pg_state {
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struct ptdump_state ptdump;
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struct ptdump_pg_level *pg_level;
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struct seq_file *seq;
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const struct addr_marker *marker;
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const struct mm_struct *mm;
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unsigned long start_address;
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int level;
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ptval_t current_prot;
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bool check_wx;
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unsigned long wx_pages;
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unsigned long uxn_pages;
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};
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void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
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void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
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pteval_t val);
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void note_page_pte(struct ptdump_state *st, unsigned long addr, pte_t pte);
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void note_page_pmd(struct ptdump_state *st, unsigned long addr, pmd_t pmd);
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void note_page_pud(struct ptdump_state *st, unsigned long addr, pud_t pud);
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void note_page_p4d(struct ptdump_state *st, unsigned long addr, p4d_t p4d);
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void note_page_pgd(struct ptdump_state *st, unsigned long addr, pgd_t pgd);
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void note_page_flush(struct ptdump_state *st);
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#ifdef CONFIG_PTDUMP_DEBUGFS
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#define EFI_RUNTIME_MAP_END DEFAULT_MAP_WINDOW_64
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void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
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#else
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static inline void ptdump_debugfs_register(struct ptdump_info *info,
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const char *name) { }
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#endif /* CONFIG_PTDUMP_DEBUGFS */
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#else
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static inline void note_page(struct ptdump_state *pt_st, unsigned long addr,
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int level, pteval_t val) { }
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static inline void note_page_pte(struct ptdump_state *st, unsigned long addr, pte_t pte) { }
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static inline void note_page_pmd(struct ptdump_state *st, unsigned long addr, pmd_t pmd) { }
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static inline void note_page_pud(struct ptdump_state *st, unsigned long addr, pud_t pud) { }
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static inline void note_page_p4d(struct ptdump_state *st, unsigned long addr, p4d_t p4d) { }
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static inline void note_page_pgd(struct ptdump_state *st, unsigned long addr, pgd_t pgd) { }
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static inline void note_page_flush(struct ptdump_state *st) { }
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#endif /* CONFIG_PTDUMP */
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#endif /* __ASM_PTDUMP_H */
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