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Ritesh Harjani (IBM)andMadhavan Srinivasan
3d44be297e
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 Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/95defb675ee5607ef3923a1e6aeac39311b8fad4.1761834163.git.ritesh.list@gmail.com
24 lines
408 B
C
24 lines
408 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/types.h>
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#include <linux/seq_file.h>
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struct flag_info {
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u64 mask;
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u64 val;
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const char *set;
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const char *clear;
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bool is_val;
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int shift;
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};
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struct ptdump_pg_level {
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const struct flag_info *flag;
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char name[4];
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size_t num;
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u64 mask;
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};
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extern struct ptdump_pg_level pg_level[5];
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void pt_dump_size(struct seq_file *m, unsigned long delta);
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