diff options
Diffstat (limited to 'arch/riscv/include')
-rw-r--r-- | arch/riscv/include/asm/page.h | 2 | ||||
-rw-r--r-- | arch/riscv/include/asm/pgtable.h | 13 | ||||
-rw-r--r-- | arch/riscv/include/asm/sparsemem.h | 11 |
3 files changed, 26 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h index 707e00a8430b..3db261c4810f 100644 --- a/arch/riscv/include/asm/page.h +++ b/arch/riscv/include/asm/page.h @@ -110,8 +110,10 @@ extern unsigned long min_low_pfn; #define page_to_bus(page) (page_to_phys(page)) #define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr))) +#ifdef CONFIG_FLATMEM #define pfn_valid(pfn) \ (((pfn) >= pfn_base) && (((pfn)-pfn_base) < max_mapnr)) +#endif #define ARCH_PFN_OFFSET (pfn_base) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index c24a083b3e12..80905b27ee98 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -84,6 +84,19 @@ extern pgd_t swapper_pg_dir[]; #define __S111 PAGE_SHARED_EXEC /* + * Roughly size the vmemmap space to be large enough to fit enough + * struct pages to map half the virtual address space. Then + * position vmemmap directly below the VMALLOC region. + */ +#define VMEMMAP_SHIFT \ + (CONFIG_VA_BITS - PAGE_SHIFT - 1 + STRUCT_PAGE_MAX_SHIFT) +#define VMEMMAP_SIZE BIT(VMEMMAP_SHIFT) +#define VMEMMAP_END (VMALLOC_START - 1) +#define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE) + +#define vmemmap ((struct page *)VMEMMAP_START) + +/* * ZERO_PAGE is a global shared page that is always zero, * used for zero-mapped memory areas, etc. */ diff --git a/arch/riscv/include/asm/sparsemem.h b/arch/riscv/include/asm/sparsemem.h new file mode 100644 index 000000000000..b58ba2d9ed6e --- /dev/null +++ b/arch/riscv/include/asm/sparsemem.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_SPARSEMEM_H +#define __ASM_SPARSEMEM_H + +#ifdef CONFIG_SPARSEMEM +#define MAX_PHYSMEM_BITS CONFIG_PA_BITS +#define SECTION_SIZE_BITS 27 +#endif /* CONFIG_SPARSEMEM */ + +#endif /* __ASM_SPARSEMEM_H */ |