diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/include/asm/cacheflush.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/efi.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/kfence.h | 53 | ||||
| -rw-r--r-- | arch/arm/include/asm/set_memory.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/switch_to.h | 14 | ||||
| -rw-r--r-- | arch/arm/include/asm/topology.h | 2 |
6 files changed, 55 insertions, 17 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index e68fb879e4f9..5e56288e343b 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -290,7 +290,6 @@ extern void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr */ #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *); -void flush_dcache_folio(struct folio *folio); #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 static inline void flush_kernel_vmap_range(void *addr, int size) diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h index a6f3b179e8a9..27218eabbf9a 100644 --- a/arch/arm/include/asm/efi.h +++ b/arch/arm/include/asm/efi.h @@ -17,7 +17,6 @@ #ifdef CONFIG_EFI void efi_init(void); -extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt); int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md); int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md); diff --git a/arch/arm/include/asm/kfence.h b/arch/arm/include/asm/kfence.h new file mode 100644 index 000000000000..7980d0f2271f --- /dev/null +++ b/arch/arm/include/asm/kfence.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_ARM_KFENCE_H +#define __ASM_ARM_KFENCE_H + +#include <linux/kfence.h> + +#include <asm/pgalloc.h> +#include <asm/set_memory.h> + +static inline int split_pmd_page(pmd_t *pmd, unsigned long addr) +{ + int i; + unsigned long pfn = PFN_DOWN(__pa(addr)); + pte_t *pte = pte_alloc_one_kernel(&init_mm); + + if (!pte) + return -ENOMEM; + + for (i = 0; i < PTRS_PER_PTE; i++) + set_pte_ext(pte + i, pfn_pte(pfn + i, PAGE_KERNEL), 0); + pmd_populate_kernel(&init_mm, pmd, pte); + + flush_tlb_kernel_range(addr, addr + PMD_SIZE); + return 0; +} + +static inline bool arch_kfence_init_pool(void) +{ + unsigned long addr; + pmd_t *pmd; + + for (addr = (unsigned long)__kfence_pool; is_kfence_address((void *)addr); + addr += PAGE_SIZE) { + pmd = pmd_off_k(addr); + + if (pmd_leaf(*pmd)) { + if (split_pmd_page(pmd, addr & PMD_MASK)) + return false; + } + } + + return true; +} + +static inline bool kfence_protect_page(unsigned long addr, bool protect) +{ + set_memory_valid(addr, 1, !protect); + + return true; +} + +#endif /* __ASM_ARM_KFENCE_H */ diff --git a/arch/arm/include/asm/set_memory.h b/arch/arm/include/asm/set_memory.h index ec17fc0fda7a..0211b9c5b14d 100644 --- a/arch/arm/include/asm/set_memory.h +++ b/arch/arm/include/asm/set_memory.h @@ -11,6 +11,7 @@ int set_memory_ro(unsigned long addr, int numpages); int set_memory_rw(unsigned long addr, int numpages); int set_memory_x(unsigned long addr, int numpages); int set_memory_nx(unsigned long addr, int numpages); +int set_memory_valid(unsigned long addr, int numpages, int enable); #else static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; } static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; } diff --git a/arch/arm/include/asm/switch_to.h b/arch/arm/include/asm/switch_to.h index b55c7b2755e4..61e4a3c4ca6e 100644 --- a/arch/arm/include/asm/switch_to.h +++ b/arch/arm/include/asm/switch_to.h @@ -23,23 +23,9 @@ */ extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *); -static inline void set_ti_cpu(struct task_struct *p) -{ -#ifdef CONFIG_THREAD_INFO_IN_TASK - /* - * The core code no longer maintains the thread_info::cpu field once - * CONFIG_THREAD_INFO_IN_TASK is in effect, but we rely on it for - * raw_smp_processor_id(), which cannot access struct task_struct* - * directly for reasons of circular #inclusion hell. - */ - task_thread_info(p)->cpu = task_cpu(p); -#endif -} - #define switch_to(prev,next,last) \ do { \ __complete_pending_tlbi(); \ - set_ti_cpu(next); \ if (IS_ENABLED(CONFIG_CURRENT_POINTER_IN_TPIDRURO)) \ __this_cpu_write(__entry_task, next); \ last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index 470299ee2fba..c7d2510e5a78 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -23,7 +23,7 @@ /* Replace task scheduler's default thermal pressure API */ #define arch_scale_thermal_pressure topology_get_thermal_pressure -#define arch_set_thermal_pressure topology_set_thermal_pressure +#define arch_update_thermal_pressure topology_update_thermal_pressure #else |