diff options
Diffstat (limited to 'Documentation/xtensa/mmu.txt')
| -rw-r--r-- | Documentation/xtensa/mmu.txt | 78 |
1 files changed, 42 insertions, 36 deletions
diff --git a/Documentation/xtensa/mmu.txt b/Documentation/xtensa/mmu.txt index 5de8715d5bec..318114de63f3 100644 --- a/Documentation/xtensa/mmu.txt +++ b/Documentation/xtensa/mmu.txt @@ -69,19 +69,10 @@ 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 0xbffff000 +| KASAN shadow map | KASAN_SHADOW_START 0x80400000 KASAN_SHADOW_SIZE ++------------------+ 0x8e400000 +------------------+ | VMALLOC area | VMALLOC_START 0xc0000000 128MB - 64KB +------------------+ VMALLOC_END @@ -92,6 +83,17 @@ 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 0xcffff000 ++------------------+ | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xd0000000 128MB +------------------+ | Uncached KSEG | XCHAL_KSEG_BYPASS_VADDR 0xd8000000 128MB @@ -109,19 +111,10 @@ 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 0x9ffff000 +| KASAN shadow map | KASAN_SHADOW_START 0x80400000 KASAN_SHADOW_SIZE ++------------------+ 0x8e400000 +------------------+ | VMALLOC area | VMALLOC_START 0xa0000000 128MB - 64KB +------------------+ VMALLOC_END @@ -132,6 +125,17 @@ 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 0xaffff000 ++------------------+ | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xb0000000 256MB +------------------+ | Uncached KSEG | XCHAL_KSEG_BYPASS_VADDR 0xc0000000 256MB @@ -150,19 +154,10 @@ 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 +| KASAN shadow map | KASAN_SHADOW_START 0x80400000 KASAN_SHADOW_SIZE ++------------------+ 0x8e400000 +------------------+ | VMALLOC area | VMALLOC_START 0x90000000 128MB - 64KB +------------------+ VMALLOC_END @@ -173,6 +168,17 @@ 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 |