init_64.c (76ea0025a214cdf0d2c204f4c21cbffa9fb57c32) init_64.c (47010c040dec8af6347ec6259104fc13f7e7e30a)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/arch/x86_64/mm/init.c
4 *
5 * Copyright (C) 1995 Linus Torvalds
6 * Copyright (C) 2000 Pavel Machek <pavel@ucw.cz>
7 * Copyright (C) 2002,2003 Andi Kleen <ak@suse.de>
8 */

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105/* Used in PAGE_KERNEL_* macros which are reasonably used out-of-tree: */
106EXPORT_SYMBOL(__default_kernel_pte_mask);
107
108int force_personality32;
109
110/*
111 * noexec32=on|off
112 * Control non executable heap for 32bit processes.
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/arch/x86_64/mm/init.c
4 *
5 * Copyright (C) 1995 Linus Torvalds
6 * Copyright (C) 2000 Pavel Machek <pavel@ucw.cz>
7 * Copyright (C) 2002,2003 Andi Kleen <ak@suse.de>
8 */

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105/* Used in PAGE_KERNEL_* macros which are reasonably used out-of-tree: */
106EXPORT_SYMBOL(__default_kernel_pte_mask);
107
108int force_personality32;
109
110/*
111 * noexec32=on|off
112 * Control non executable heap for 32bit processes.
113 * To control the stack too use noexec=off
113 *
114 * on PROT_READ does not imply PROT_EXEC for 32-bit processes (default)
115 * off PROT_READ implies PROT_EXEC
116 */
117static int __init nonx32_setup(char *str)
118{
119 if (!strcmp(str, "on"))
120 force_personality32 &= ~READ_IMPLIES_EXEC;

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1263 kernel_physical_mapping_remove(start, start + size);
1264}
1265#endif /* CONFIG_MEMORY_HOTPLUG */
1266
1267static struct kcore_list kcore_vsyscall;
1268
1269static void __init register_page_bootmem_info(void)
1270{
114 *
115 * on PROT_READ does not imply PROT_EXEC for 32-bit processes (default)
116 * off PROT_READ implies PROT_EXEC
117 */
118static int __init nonx32_setup(char *str)
119{
120 if (!strcmp(str, "on"))
121 force_personality32 &= ~READ_IMPLIES_EXEC;

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1264 kernel_physical_mapping_remove(start, start + size);
1265}
1266#endif /* CONFIG_MEMORY_HOTPLUG */
1267
1268static struct kcore_list kcore_vsyscall;
1269
1270static void __init register_page_bootmem_info(void)
1271{
1271#if defined(CONFIG_NUMA) || defined(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP)
1272#if defined(CONFIG_NUMA) || defined(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP)
1272 int i;
1273
1274 for_each_online_node(i)
1275 register_page_bootmem_info_node(NODE_DATA(i));
1276#endif
1277}
1278
1279/*

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1274
1275 for_each_online_node(i)
1276 register_page_bootmem_info_node(NODE_DATA(i));
1277#endif
1278}
1279
1280/*

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