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51c78eb3 JF |
1 | #ifndef _ASM_X86_PAGE_64_DEFS_H |
2 | #define _ASM_X86_PAGE_64_DEFS_H | |
3 | ||
c420f167 AR |
4 | #ifdef CONFIG_KASAN |
5 | #define KASAN_STACK_ORDER 1 | |
6 | #else | |
7 | #define KASAN_STACK_ORDER 0 | |
8 | #endif | |
9 | ||
10 | #define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) | |
38e7c572 | 11 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) |
51c78eb3 JF |
12 | #define CURRENT_MASK (~(THREAD_SIZE - 1)) |
13 | ||
c420f167 | 14 | #define EXCEPTION_STACK_ORDER (0 + KASAN_STACK_ORDER) |
51c78eb3 JF |
15 | #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) |
16 | ||
17 | #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) | |
18 | #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) | |
19 | ||
c420f167 | 20 | #define IRQ_STACK_ORDER (2 + KASAN_STACK_ORDER) |
51c78eb3 JF |
21 | #define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) |
22 | ||
6f442be2 AL |
23 | #define DOUBLEFAULT_STACK 1 |
24 | #define NMI_STACK 2 | |
25 | #define DEBUG_STACK 3 | |
26 | #define MCE_STACK 4 | |
27 | #define N_EXCEPTION_STACKS 4 /* hw limit: 7 */ | |
51c78eb3 JF |
28 | |
29 | #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) | |
30 | #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) | |
31 | ||
32 | /* | |
33 | * Set __PAGE_OFFSET to the most negative possible address + | |
34 | * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a | |
35 | * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's | |
36 | * what Xen requires. | |
37 | */ | |
38 | #define __PAGE_OFFSET _AC(0xffff880000000000, UL) | |
39 | ||
51c78eb3 JF |
40 | #define __START_KERNEL_map _AC(0xffffffff80000000, UL) |
41 | ||
c898faf9 | 42 | /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ |
51c78eb3 | 43 | #define __PHYSICAL_MASK_SHIFT 46 |
9063c61f | 44 | #define __VIRTUAL_MASK_SHIFT 47 |
51c78eb3 JF |
45 | |
46 | /* | |
6145cfe3 KC |
47 | * Kernel image size is limited to 1GiB due to the fixmap living in the |
48 | * next 1GiB (see level2_kernel_pgt in arch/x86/kernel/head_64.S). Use | |
49 | * 512MiB by default, leaving 1.5GiB for modules once the page tables | |
50 | * are fully set up. If kernel ASLR is configured, it can extend the | |
51 | * kernel page table mapping, reducing the size of the modules area. | |
51c78eb3 | 52 | */ |
6145cfe3 KC |
53 | #define KERNEL_IMAGE_SIZE_DEFAULT (512 * 1024 * 1024) |
54 | #if defined(CONFIG_RANDOMIZE_BASE) && \ | |
55 | CONFIG_RANDOMIZE_BASE_MAX_OFFSET > KERNEL_IMAGE_SIZE_DEFAULT | |
56 | #define KERNEL_IMAGE_SIZE CONFIG_RANDOMIZE_BASE_MAX_OFFSET | |
57 | #else | |
58 | #define KERNEL_IMAGE_SIZE KERNEL_IMAGE_SIZE_DEFAULT | |
59 | #endif | |
51c78eb3 | 60 | |
51c78eb3 | 61 | #endif /* _ASM_X86_PAGE_64_DEFS_H */ |