diff options
Diffstat (limited to 'arch/arm64/mm/mmu.c')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index ef82312860ac..e5ae8663f230 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/mm/mmu.c * * Copyright (C) 1995-2005 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/cache.h> @@ -40,7 +29,7 @@ #include <asm/kernel-pgtable.h> #include <asm/sections.h> #include <asm/setup.h> -#include <asm/sizes.h> +#include <linux/sizes.h> #include <asm/tlb.h> #include <asm/mmu_context.h> #include <asm/ptdump.h> @@ -955,13 +944,18 @@ void *__init fixmap_remap_fdt(phys_addr_t dt_phys) int __init arch_ioremap_pud_supported(void) { - /* only 4k granule supports level 1 block mappings */ - return IS_ENABLED(CONFIG_ARM64_4K_PAGES); + /* + * Only 4k granule supports level 1 block mappings. + * SW table walks can't handle removal of intermediate entries. + */ + return IS_ENABLED(CONFIG_ARM64_4K_PAGES) && + !IS_ENABLED(CONFIG_ARM64_PTDUMP_DEBUGFS); } int __init arch_ioremap_pmd_supported(void) { - return 1; + /* See arch_ioremap_pud_supported() */ + return !IS_ENABLED(CONFIG_ARM64_PTDUMP_DEBUGFS); } int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot) @@ -1065,8 +1059,8 @@ int p4d_free_pud_page(p4d_t *p4d, unsigned long addr) } #ifdef CONFIG_MEMORY_HOTPLUG -int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap, - bool want_memblock) +int arch_add_memory(int nid, u64 start, u64 size, + struct mhp_restrictions *restrictions) { int flags = 0; @@ -1077,6 +1071,6 @@ int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap, size, PAGE_KERNEL, __pgd_pgtable_alloc, flags); return __add_pages(nid, start >> PAGE_SHIFT, size >> PAGE_SHIFT, - altmap, want_memblock); + restrictions); } #endif |