e513ffd881
UEFI runtime page tables dump only for ARM64 at present, but ARM support EFI and ARM_PTDUMP_DEBUGFS now. Since ARM could potentially execute with a 1G/3G user/kernel split, choosing 1G as the upper limit for UEFI runtime end, with this, we could enable UEFI runtime page tables on ARM. Acked-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
41 lines
957 B
C
41 lines
957 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_DEBUG_WX
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#define debug_checkwx() ptdump_check_wx()
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#else
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#define debug_checkwx() do { } while (0)
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#endif
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#endif /* __ASM_PTDUMP_H */
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