dump.c (afd1efa1d80162cd48bacb3b848136249df28c62) dump.c (e66372ecb80dc5179c7abb880229c7452e813d15)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Debug helper to dump the current kernel pagetables of the system
4 * so that we can see what the various memory ranges are set to.
5 *
6 * Derived from x86 implementation:
7 * (C) Copyright 2008 Intel Corporation
8 *

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195 .mask = PMD_SECT_S,
196 .val = PMD_SECT_S,
197 .set = "SHD",
198 .clear = " ",
199 },
200};
201
202struct pg_level {
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Debug helper to dump the current kernel pagetables of the system
4 * so that we can see what the various memory ranges are set to.
5 *
6 * Derived from x86 implementation:
7 * (C) Copyright 2008 Intel Corporation
8 *

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195 .mask = PMD_SECT_S,
196 .val = PMD_SECT_S,
197 .set = "SHD",
198 .clear = " ",
199 },
200};
201
202struct pg_level {
203 const char *name;
203 const struct prot_bits *bits;
204 size_t num;
205 u64 mask;
206 const struct prot_bits *ro_bit;
207 const struct prot_bits *nx_bit;
208};
209
210static struct pg_level pg_level[] = {
211 {
212 }, { /* pgd */
213 }, { /* p4d */
214 }, { /* pud */
215 }, { /* pmd */
204 const struct prot_bits *bits;
205 size_t num;
206 u64 mask;
207 const struct prot_bits *ro_bit;
208 const struct prot_bits *nx_bit;
209};
210
211static struct pg_level pg_level[] = {
212 {
213 }, { /* pgd */
214 }, { /* p4d */
215 }, { /* pud */
216 }, { /* pmd */
217 .name = (CONFIG_PGTABLE_LEVELS > 2) ? "PMD" : "PGD",
216 .bits = section_bits,
217 .num = ARRAY_SIZE(section_bits),
218 }, { /* pte */
218 .bits = section_bits,
219 .num = ARRAY_SIZE(section_bits),
220 }, { /* pte */
221 .name = "PTE",
219 .bits = pte_bits,
220 .num = ARRAY_SIZE(pte_bits),
221 },
222};
223
224static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t num)
225{
226 unsigned i;

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277 pt_dump_seq_printf(st->seq, "0x%08lx-0x%08lx ",
278 st->start_address, addr);
279
280 delta = (addr - st->start_address) >> 10;
281 while (!(delta & 1023) && unit[1]) {
282 delta >>= 10;
283 unit++;
284 }
222 .bits = pte_bits,
223 .num = ARRAY_SIZE(pte_bits),
224 },
225};
226
227static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t num)
228{
229 unsigned i;

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280 pt_dump_seq_printf(st->seq, "0x%08lx-0x%08lx ",
281 st->start_address, addr);
282
283 delta = (addr - st->start_address) >> 10;
284 while (!(delta & 1023) && unit[1]) {
285 delta >>= 10;
286 unit++;
287 }
285 pt_dump_seq_printf(st->seq, "%9lu%c", delta, *unit);
288 pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit,
289 pg_level[st->level].name);
286 if (st->current_domain)
287 pt_dump_seq_printf(st->seq, " %s",
288 st->current_domain);
289 if (pg_level[st->level].bits)
290 dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num);
291 pt_dump_seq_printf(st->seq, "\n");
292 }
293

--- 182 unchanged lines hidden --- 		290 if (st->current_domain)
291 pt_dump_seq_printf(st->seq, " %s",
292 st->current_domain);
293 if (pg_level[st->level].bits)
294 dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num);
295 pt_dump_seq_printf(st->seq, "\n");
296 }
297

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