diff --git a/Documentation/xtensa/mmu.txt b/Documentation/xtensa/mmu.txt index 5de8715d5bec..16921393e366 100644 --- a/Documentation/xtensa/mmu.txt +++ b/Documentation/xtensa/mmu.txt @@ -69,8 +69,17 @@ Default MMUv2-compatible layout. | Userspace | 0x00000000 TASK_SIZE +------------------+ 0x40000000 +------------------+ -| Page table | 0x80000000 -+------------------+ 0x80400000 +| Page table | XCHAL_PAGE_TABLE_VADDR 0x80000000 XCHAL_PAGE_TABLE_SIZE ++------------------+ ++------------------+ +| VMALLOC area | VMALLOC_START 0xc0000000 128MB - 64KB ++------------------+ VMALLOC_END +| Cache aliasing | TLBTEMP_BASE_1 0xc7ff0000 DCACHE_WAY_SIZE +| remap area 1 | ++------------------+ +| Cache aliasing | TLBTEMP_BASE_2 DCACHE_WAY_SIZE +| remap area 2 | ++------------------+ +------------------+ | KMAP area | PKMAP_BASE PTRS_PER_PTE * | | DCACHE_N_COLORS * @@ -81,16 +90,7 @@ Default MMUv2-compatible layout. | | NR_CPUS * | | DCACHE_N_COLORS * | | PAGE_SIZE -+------------------+ FIXADDR_TOP 0xbffff000 -+------------------+ -| VMALLOC area | VMALLOC_START 0xc0000000 128MB - 64KB -+------------------+ VMALLOC_END -| Cache aliasing | TLBTEMP_BASE_1 0xc7ff0000 DCACHE_WAY_SIZE -| remap area 1 | -+------------------+ -| Cache aliasing | TLBTEMP_BASE_2 DCACHE_WAY_SIZE -| remap area 2 | -+------------------+ ++------------------+ FIXADDR_TOP 0xcffff000 +------------------+ | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xd0000000 128MB +------------------+ @@ -109,8 +109,17 @@ Default MMUv2-compatible layout. | Userspace | 0x00000000 TASK_SIZE +------------------+ 0x40000000 +------------------+ -| Page table | 0x80000000 -+------------------+ 0x80400000 +| Page table | XCHAL_PAGE_TABLE_VADDR 0x80000000 XCHAL_PAGE_TABLE_SIZE ++------------------+ ++------------------+ +| VMALLOC area | VMALLOC_START 0xa0000000 128MB - 64KB ++------------------+ VMALLOC_END +| Cache aliasing | TLBTEMP_BASE_1 0xa7ff0000 DCACHE_WAY_SIZE +| remap area 1 | ++------------------+ +| Cache aliasing | TLBTEMP_BASE_2 DCACHE_WAY_SIZE +| remap area 2 | ++------------------+ +------------------+ | KMAP area | PKMAP_BASE PTRS_PER_PTE * | | DCACHE_N_COLORS * @@ -121,16 +130,7 @@ Default MMUv2-compatible layout. | | NR_CPUS * | | DCACHE_N_COLORS * | | PAGE_SIZE -+------------------+ FIXADDR_TOP 0x9ffff000 -+------------------+ -| VMALLOC area | VMALLOC_START 0xa0000000 128MB - 64KB -+------------------+ VMALLOC_END -| Cache aliasing | TLBTEMP_BASE_1 0xa7ff0000 DCACHE_WAY_SIZE -| remap area 1 | -+------------------+ -| Cache aliasing | TLBTEMP_BASE_2 DCACHE_WAY_SIZE -| remap area 2 | -+------------------+ ++------------------+ FIXADDR_TOP 0xaffff000 +------------------+ | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xb0000000 256MB +------------------+ @@ -150,19 +150,8 @@ Default MMUv2-compatible layout. | Userspace | 0x00000000 TASK_SIZE +------------------+ 0x40000000 +------------------+ -| Page table | 0x80000000 -+------------------+ 0x80400000 +| Page table | XCHAL_PAGE_TABLE_VADDR 0x80000000 XCHAL_PAGE_TABLE_SIZE +------------------+ -| KMAP area | PKMAP_BASE PTRS_PER_PTE * -| | DCACHE_N_COLORS * -| | PAGE_SIZE -| | (4MB * DCACHE_N_COLORS) -+------------------+ -| Atomic KMAP area | FIXADDR_START KM_TYPE_NR * -| | NR_CPUS * -| | DCACHE_N_COLORS * -| | PAGE_SIZE -+------------------+ FIXADDR_TOP 0x8ffff000 +------------------+ | VMALLOC area | VMALLOC_START 0x90000000 128MB - 64KB +------------------+ VMALLOC_END @@ -173,6 +162,17 @@ Default MMUv2-compatible layout. | remap area 2 | +------------------+ +------------------+ +| KMAP area | PKMAP_BASE PTRS_PER_PTE * +| | DCACHE_N_COLORS * +| | PAGE_SIZE +| | (4MB * DCACHE_N_COLORS) ++------------------+ +| Atomic KMAP area | FIXADDR_START KM_TYPE_NR * +| | NR_CPUS * +| | DCACHE_N_COLORS * +| | PAGE_SIZE ++------------------+ FIXADDR_TOP 0x9ffff000 ++------------------+ | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xa0000000 512MB +------------------+ | Uncached KSEG | XCHAL_KSEG_BYPASS_VADDR 0xc0000000 512MB diff --git a/arch/xtensa/include/asm/fixmap.h b/arch/xtensa/include/asm/fixmap.h index 0d30403b6c95..7e25c1b50ac0 100644 --- a/arch/xtensa/include/asm/fixmap.h +++ b/arch/xtensa/include/asm/fixmap.h @@ -44,7 +44,7 @@ enum fixed_addresses { __end_of_fixed_addresses }; -#define FIXADDR_TOP (VMALLOC_START - PAGE_SIZE) +#define FIXADDR_TOP (XCHAL_KSEG_CACHED_VADDR - PAGE_SIZE) #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) @@ -63,7 +63,7 @@ static __always_inline unsigned long fix_to_virt(const unsigned int idx) * table. */ BUILD_BUG_ON(FIXADDR_START < - XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE); + TLBTEMP_BASE_1 + TLBTEMP_SIZE); BUILD_BUG_ON(idx >= __end_of_fixed_addresses); return __fix_to_virt(idx); } diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index 6e070db1022e..04e9340eac4b 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -72,7 +72,7 @@ static inline void *kmap(struct page *page) * page table. */ BUILD_BUG_ON(PKMAP_BASE < - XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE); + TLBTEMP_BASE_1 + TLBTEMP_SIZE); BUG_ON(in_interrupt()); if (!PageHighMem(page)) return page_address(page); diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index 4ddbfd57a7c8..5d69c11c01b8 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h @@ -36,8 +36,6 @@ #define MAX_LOW_PFN PHYS_PFN(0xfffffffful) #endif -#define PGTABLE_START 0x80000000 - /* * Cache aliasing: * diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 720fe4e8b497..6fc1cb093fb3 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -100,23 +100,23 @@ void __init mem_init(void) mem_init_print_info(NULL); pr_info("virtual kernel memory layout:\n" +#ifdef CONFIG_MMU + " vmalloc : 0x%08lx - 0x%08lx (%5lu MB)\n" +#endif #ifdef CONFIG_HIGHMEM " pkmap : 0x%08lx - 0x%08lx (%5lu kB)\n" " fixmap : 0x%08lx - 0x%08lx (%5lu kB)\n" -#endif -#ifdef CONFIG_MMU - " vmalloc : 0x%08lx - 0x%08lx (%5lu MB)\n" #endif " lowmem : 0x%08lx - 0x%08lx (%5lu MB)\n", +#ifdef CONFIG_MMU + VMALLOC_START, VMALLOC_END, + (VMALLOC_END - VMALLOC_START) >> 20, #ifdef CONFIG_HIGHMEM PKMAP_BASE, PKMAP_BASE + LAST_PKMAP * PAGE_SIZE, (LAST_PKMAP*PAGE_SIZE) >> 10, FIXADDR_START, FIXADDR_TOP, (FIXADDR_TOP - FIXADDR_START) >> 10, #endif -#ifdef CONFIG_MMU - VMALLOC_START, VMALLOC_END, - (VMALLOC_END - VMALLOC_START) >> 20, PAGE_OFFSET, PAGE_OFFSET + (max_low_pfn - min_low_pfn) * PAGE_SIZE, #else