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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Christophe Leroy
a90f0a02f1
Patch series "mm: ptdump: Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute", v2. This series refactors CONFIG_DEBUG_WX for the 5 architectures implementing CONFIG_GENERIC_PTDUMP First rename stuff in ARM which uses similar names while not implementing CONFIG_GENERIC_PTDUMP. Then define a generic version of debug_checkwx() that calls ptdump_check_wx() when CONFIG_DEBUG_WX is set. Call it immediately after calling mark_rodata_ro() instead of calling it at the end of every mark_rodata_ro(). Then implement a debugfs attribute that can be used to trigger a W^X test at anytime and regardless of CONFIG_DEBUG_WX This patch (of 5): CONFIG_DEBUG_WX is a core option defined in mm/Kconfig.debug To avoid any future conflict, rename ARM version into CONFIG_ARM_DEBUG_WX. Link: https://lore.kernel.org/lkml/20200422152656.GF676@willie-the-truck/T/#m802eaf33efd6f8d575939d157301b35ac0d4a64f Link: https://github.com/KSPP/linux/issues/35 Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/fa297aa90caeb61eee2b70c6c5897a2ab58a9562.1706610398.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <[email protected]> Cc: Albert Ou <[email protected]> Cc: Alexander Gordeev <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: "Aneesh Kumar K.V (IBM)" <[email protected]> Cc: Borislav Petkov (AMD) <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Gerald Schaefer <[email protected]> Cc: Greg KH <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Kees Cook <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: "Naveen N. Rao" <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Phong Tran <[email protected]> Cc: Russell King <[email protected]> Cc: Steven Price <[email protected]> Cc: Sven Schnelle <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Will Deacon <[email protected]> Cc: Alexandre Ghiti <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
42 lines
969 B
C
42 lines
969 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2014 ARM Ltd. */
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#ifndef __ASM_PTDUMP_H
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#define __ASM_PTDUMP_H
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#ifdef CONFIG_ARM_PTDUMP_CORE
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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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void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
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#ifdef CONFIG_ARM_PTDUMP_DEBUGFS
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#define EFI_RUNTIME_MAP_END SZ_1G
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void 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_ARM_PTDUMP_DEBUGFS */
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void ptdump_check_wx(void);
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#endif /* CONFIG_ARM_PTDUMP_CORE */
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#ifdef CONFIG_ARM_DEBUG_WX
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#define arm_debug_checkwx() ptdump_check_wx()
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#else
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#define arm_debug_checkwx() do { } while (0)
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#endif
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#endif /* __ASM_PTDUMP_H */
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