change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/arm/mm/dump.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Debug helper to dump the current kernel pagetables of the system
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  * so that we can see what the various memory ranges are set to.
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@@ -6,11 +7,6 @@
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  * (C) Copyright 2008 Intel Corporation
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  *
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  * Author: Arjan van de Ven <arjan@linux.intel.com>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; version 2
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- * of the License.
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  */
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 #include <linux/debugfs.h>
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 #include <linux/fs.h>
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@@ -20,7 +16,6 @@
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 #include <asm/domain.h>
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 #include <asm/fixmap.h>
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 #include <asm/memory.h>
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-#include <asm/pgtable.h>
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 #include <asm/ptdump.h>
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 static struct addr_marker address_markers[] = {
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@@ -211,6 +206,7 @@
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 static struct pg_level pg_level[] = {
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 	{
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 	}, { /* pgd */
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+	}, { /* p4d */
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 	}, { /* pud */
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 	}, { /* pmd */
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 		.bits	= section_bits,
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@@ -312,7 +308,7 @@
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 	for (i = 0; i < PTRS_PER_PTE; i++, pte++) {
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 		addr = start + i * PAGE_SIZE;
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-		note_page(st, addr, 4, pte_val(*pte), domain);
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+		note_page(st, addr, 5, pte_val(*pte), domain);
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 	}
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 }
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@@ -346,7 +342,7 @@
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 		addr = start + i * PMD_SIZE;
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 		domain = get_domain_name(pmd);
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 		if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd))
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-			note_page(st, addr, 3, pmd_val(*pmd), domain);
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+			note_page(st, addr, 4, pmd_val(*pmd), domain);
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 		else
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 			walk_pte(st, pmd, addr, domain);
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@@ -354,14 +350,14 @@
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 			addr += SECTION_SIZE;
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 			pmd++;
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 			domain = get_domain_name(pmd);
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-			note_page(st, addr, 3, pmd_val(*pmd), domain);
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+			note_page(st, addr, 4, pmd_val(*pmd), domain);
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 		}
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 	}
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 }
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-static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
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+static void walk_pud(struct pg_state *st, p4d_t *p4d, unsigned long start)
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 {
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-	pud_t *pud = pud_offset(pgd, 0);
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+	pud_t *pud = pud_offset(p4d, 0);
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 	unsigned long addr;
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 	unsigned i;
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@@ -370,7 +366,23 @@
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 		if (!pud_none(*pud)) {
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 			walk_pmd(st, pud, addr);
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 		} else {
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-			note_page(st, addr, 2, pud_val(*pud), NULL);
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+			note_page(st, addr, 3, pud_val(*pud), NULL);
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+		}
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+	}
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+}
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+
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+static void walk_p4d(struct pg_state *st, pgd_t *pgd, unsigned long start)
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+{
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+	p4d_t *p4d = p4d_offset(pgd, 0);
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+	unsigned long addr;
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+	unsigned i;
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+
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+	for (i = 0; i < PTRS_PER_P4D; i++, p4d++) {
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+		addr = start + i * P4D_SIZE;
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+		if (!p4d_none(*p4d)) {
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+			walk_pud(st, p4d, addr);
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+		} else {
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+			note_page(st, addr, 2, p4d_val(*p4d), NULL);
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 		}
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 	}
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 }
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@@ -385,7 +397,7 @@
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 	for (i = 0; i < PTRS_PER_PGD; i++, pgd++) {
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 		addr = start + i * PGDIR_SIZE;
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 		if (!pgd_none(*pgd)) {
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-			walk_pud(st, pgd, addr);
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+			walk_p4d(st, pgd, addr);
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 		} else {
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 			note_page(st, addr, 1, pgd_val(*pgd), NULL);
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 		}
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@@ -450,7 +462,7 @@
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 static int ptdump_init(void)
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 {
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 	ptdump_initialize();
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-	return ptdump_debugfs_register(&kernel_ptdump_info,
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-					"kernel_page_tables");
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+	ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables");
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+	return 0;
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 }
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 __initcall(ptdump_init);