diff options
Diffstat (limited to 'arch/riscv/include/asm/page.h')
| -rw-r--r-- | arch/riscv/include/asm/page.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h index b3e5ff0125fe..004372f8da54 100644 --- a/arch/riscv/include/asm/page.h +++ b/arch/riscv/include/asm/page.h @@ -31,9 +31,20 @@ * When not using MMU this corresponds to the first free page in * physical memory (aligned on a page boundary). */ +#ifdef CONFIG_64BIT +#ifdef CONFIG_MMU +#define PAGE_OFFSET kernel_map.page_offset +#else #define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) - -#define KERN_VIRT_SIZE (-PAGE_OFFSET) +#endif +/* + * By default, CONFIG_PAGE_OFFSET value corresponds to SV48 address space so + * define the PAGE_OFFSET value for SV39. + */ +#define PAGE_OFFSET_L3 _AC(0xffffffd800000000, UL) +#else +#define PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) +#endif /* CONFIG_64BIT */ #ifndef __ASSEMBLY__ @@ -86,6 +97,7 @@ extern unsigned long riscv_pfn_base; #endif /* CONFIG_MMU */ struct kernel_mapping { + unsigned long page_offset; unsigned long virt_addr; uintptr_t phys_addr; uintptr_t size; @@ -107,7 +119,7 @@ extern phys_addr_t phys_ram_base; ((x) >= kernel_map.virt_addr && (x) < (kernel_map.virt_addr + kernel_map.size)) #define is_linear_mapping(x) \ - ((x) >= PAGE_OFFSET && (!IS_ENABLED(CONFIG_64BIT) || (x) < kernel_map.virt_addr)) + ((x) >= PAGE_OFFSET && (!IS_ENABLED(CONFIG_64BIT) || (x) < PAGE_OFFSET + KERN_VIRT_SIZE)) #define linear_mapping_pa_to_va(x) ((void *)((unsigned long)(x) + kernel_map.va_pa_offset)) #define kernel_mapping_pa_to_va(y) ({ \ |