mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 11:50:52 +07:00
69786cdb37
Introduce generic kasan_populate_zero_shadow(shadow_start, shadow_end). This function maps kasan_zero_page to the [shadow_start, shadow_end] addresses. This replaces x86_64 specific populate_zero_shadow() and will be used for ARM64 in follow on patches. The main changes from original version are: * Use p?d_populate*() instead of set_p?d() * Use memblock allocator directly instead of vmemmap_alloc_block() * __pa() instead of __pa_nodebug(). __pa() causes troubles iff we use it before kasan_early_init(). kasan_populate_zero_shadow() will be used later, so we ok with __pa() here. Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Alexander Potapenko <glider@google.com> Cc: Alexey Klimov <klimov.linux@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Keitel <dkeitel@codeaurora.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Yury <yury.norov@gmail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1439444244-26057-3-git-send-email-ryabinin.a.a@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
#ifndef _LINUX_KASAN_H
|
|
#define _LINUX_KASAN_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct kmem_cache;
|
|
struct page;
|
|
struct vm_struct;
|
|
|
|
#ifdef CONFIG_KASAN
|
|
|
|
#define KASAN_SHADOW_SCALE_SHIFT 3
|
|
|
|
#include <asm/kasan.h>
|
|
#include <asm/pgtable.h>
|
|
#include <linux/sched.h>
|
|
|
|
extern unsigned char kasan_zero_page[PAGE_SIZE];
|
|
extern pte_t kasan_zero_pte[PTRS_PER_PTE];
|
|
extern pmd_t kasan_zero_pmd[PTRS_PER_PMD];
|
|
extern pud_t kasan_zero_pud[PTRS_PER_PUD];
|
|
|
|
void kasan_populate_zero_shadow(const void *shadow_start,
|
|
const void *shadow_end);
|
|
|
|
static inline void *kasan_mem_to_shadow(const void *addr)
|
|
{
|
|
return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT)
|
|
+ KASAN_SHADOW_OFFSET;
|
|
}
|
|
|
|
/* Enable reporting bugs after kasan_disable_current() */
|
|
static inline void kasan_enable_current(void)
|
|
{
|
|
current->kasan_depth++;
|
|
}
|
|
|
|
/* Disable reporting bugs for current task */
|
|
static inline void kasan_disable_current(void)
|
|
{
|
|
current->kasan_depth--;
|
|
}
|
|
|
|
void kasan_unpoison_shadow(const void *address, size_t size);
|
|
|
|
void kasan_alloc_pages(struct page *page, unsigned int order);
|
|
void kasan_free_pages(struct page *page, unsigned int order);
|
|
|
|
void kasan_poison_slab(struct page *page);
|
|
void kasan_unpoison_object_data(struct kmem_cache *cache, void *object);
|
|
void kasan_poison_object_data(struct kmem_cache *cache, void *object);
|
|
|
|
void kasan_kmalloc_large(const void *ptr, size_t size);
|
|
void kasan_kfree_large(const void *ptr);
|
|
void kasan_kfree(void *ptr);
|
|
void kasan_kmalloc(struct kmem_cache *s, const void *object, size_t size);
|
|
void kasan_krealloc(const void *object, size_t new_size);
|
|
|
|
void kasan_slab_alloc(struct kmem_cache *s, void *object);
|
|
void kasan_slab_free(struct kmem_cache *s, void *object);
|
|
|
|
int kasan_module_alloc(void *addr, size_t size);
|
|
void kasan_free_shadow(const struct vm_struct *vm);
|
|
|
|
#else /* CONFIG_KASAN */
|
|
|
|
static inline void kasan_unpoison_shadow(const void *address, size_t size) {}
|
|
|
|
static inline void kasan_enable_current(void) {}
|
|
static inline void kasan_disable_current(void) {}
|
|
|
|
static inline void kasan_alloc_pages(struct page *page, unsigned int order) {}
|
|
static inline void kasan_free_pages(struct page *page, unsigned int order) {}
|
|
|
|
static inline void kasan_poison_slab(struct page *page) {}
|
|
static inline void kasan_unpoison_object_data(struct kmem_cache *cache,
|
|
void *object) {}
|
|
static inline void kasan_poison_object_data(struct kmem_cache *cache,
|
|
void *object) {}
|
|
|
|
static inline void kasan_kmalloc_large(void *ptr, size_t size) {}
|
|
static inline void kasan_kfree_large(const void *ptr) {}
|
|
static inline void kasan_kfree(void *ptr) {}
|
|
static inline void kasan_kmalloc(struct kmem_cache *s, const void *object,
|
|
size_t size) {}
|
|
static inline void kasan_krealloc(const void *object, size_t new_size) {}
|
|
|
|
static inline void kasan_slab_alloc(struct kmem_cache *s, void *object) {}
|
|
static inline void kasan_slab_free(struct kmem_cache *s, void *object) {}
|
|
|
|
static inline int kasan_module_alloc(void *addr, size_t size) { return 0; }
|
|
static inline void kasan_free_shadow(const struct vm_struct *vm) {}
|
|
|
|
#endif /* CONFIG_KASAN */
|
|
|
|
#endif /* LINUX_KASAN_H */
|