diff options
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kasan.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 21 | ||||
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 10 |
3 files changed, 18 insertions, 15 deletions
diff --git a/arch/arm64/include/asm/kasan.h b/arch/arm64/include/asm/kasan.h index de0d212..71ad0f9 100644 --- a/arch/arm64/include/asm/kasan.h +++ b/arch/arm64/include/asm/kasan.h @@ -14,7 +14,7 @@ * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/8 of kernel virtual addresses. */ #define KASAN_SHADOW_START (VA_START) -#define KASAN_SHADOW_END (KASAN_SHADOW_START + (1UL << (VA_BITS - 3))) +#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) /* * This value is used to map an address to the corresponding shadow diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index aebc739..4388651 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -45,16 +45,15 @@ * VA_START - the first kernel virtual address. * TASK_SIZE - the maximum size of a user space task. * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area. - * The module space lives between the addresses given by TASK_SIZE - * and PAGE_OFFSET - it must be within 128MB of the kernel text. */ #define VA_BITS (CONFIG_ARM64_VA_BITS) #define VA_START (UL(0xffffffffffffffff) << VA_BITS) #define PAGE_OFFSET (UL(0xffffffffffffffff) << (VA_BITS - 1)) -#define KIMAGE_VADDR (PAGE_OFFSET) -#define MODULES_END (KIMAGE_VADDR) -#define MODULES_VADDR (MODULES_END - SZ_64M) -#define PCI_IO_END (MODULES_VADDR - SZ_2M) +#define KIMAGE_VADDR (MODULES_END) +#define MODULES_END (MODULES_VADDR + MODULES_VSIZE) +#define MODULES_VADDR (VA_START + KASAN_SHADOW_SIZE) +#define MODULES_VSIZE (SZ_64M) +#define PCI_IO_END (PAGE_OFFSET - SZ_2M) #define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE) #define FIXADDR_TOP (PCI_IO_START - SZ_2M) #define TASK_SIZE_64 (UL(1) << VA_BITS) @@ -72,6 +71,16 @@ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 4)) /* + * The size of the KASAN shadow region. This should be 1/8th of the + * size of the entire kernel virtual address space. + */ +#ifdef CONFIG_KASAN +#define KASAN_SHADOW_SIZE (UL(1) << (VA_BITS - 3)) +#else +#define KASAN_SHADOW_SIZE (0) +#endif + +/* * Physical vs virtual RAM address space conversion. These are * private definitions which should NOT be used outside memory.h * files. Use virt_to_phys/phys_to_virt/__pa/__va instead. diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 8735540..a440f5a 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -36,19 +36,13 @@ * * VMEMAP_SIZE: allows the whole VA space to be covered by a struct page array * (rounded up to PUD_SIZE). - * VMALLOC_START: beginning of the kernel VA space + * VMALLOC_START: beginning of the kernel vmalloc space * VMALLOC_END: extends to the available space below vmmemmap, PCI I/O space, * fixed mappings and modules */ #define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT)) * sizeof(struct page), PUD_SIZE) -#ifndef CONFIG_KASAN -#define VMALLOC_START (VA_START) -#else -#include <asm/kasan.h> -#define VMALLOC_START (KASAN_SHADOW_END + SZ_64K) -#endif - +#define VMALLOC_START (MODULES_END) #define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K) #define vmemmap ((struct page *)(VMALLOC_END + SZ_64K)) |
