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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-29 16:40:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-29 16:40:28 -0800
commitd0bd31dc5c0b46b9c778112900cf8f910ac26e1b (patch)
tree84998565ff4a1aee4540a986923ba75b63674ea8 /Documentation
parentaca21de2e8355769513c27d1c218e3e8947fe84b (diff)
parentca47480921587ae30417dd234a9f79af188e3666 (diff)
Merge tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa updates from Max Filippov: - add SSP support - add KASAN support - improvements to xtensa-specific assembly: - use ENTRY and ENDPROC consistently - clean up and unify word alignment macros - clean up and unify fixup marking - use 'call' instead of 'callx' where possible - various cleanups: - consiolidate kernel stack size related definitions - replace #ifdef'fed/commented out debug printk statements with pr_debug - use struct exc_table instead of flat array for exception handling data - build kernel with -mtext-section-literals; simplify xtensa linker script - fix futex_atomic_cmpxchg_inatomic() * tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa: (21 commits) xtensa: fix futex_atomic_cmpxchg_inatomic xtensa: shut up gcc-8 warnings xtensa: print kernel sections info in mem_init xtensa: use generic strncpy_from_user with KASAN xtensa: use __memset in __xtensa_clear_user xtensa: add support for KASAN xtensa: move fixmap and kmap just above the KSEG xtensa: don't clear swapper_pg_dir in paging_init xtensa: extract init_kio xtensa: implement early_trap_init xtensa: clean up exception handling structure xtensa: clean up custom-controlled debug output xtensa: enable stack protector xtensa: print hardware config ID on startup xtensa: consolidate kernel stack size related definitions xtensa: clean up functions in assembly code xtensa: clean up word alignment macros in assembly code xtensa: clean up fixups in assembly code xtensa: use call instead of callx in assembly code xtensa: build kernel with text-section-literals ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/features/debug/KASAN/arch-support.txt2
-rw-r--r--Documentation/features/debug/stackprotector/arch-support.txt2
-rw-r--r--Documentation/xtensa/mmu.txt78
3 files changed, 44 insertions, 38 deletions
diff --git a/Documentation/features/debug/KASAN/arch-support.txt b/Documentation/features/debug/KASAN/arch-support.txt
index f377290fe48e..3406fae833c3 100644
--- a/Documentation/features/debug/KASAN/arch-support.txt
+++ b/Documentation/features/debug/KASAN/arch-support.txt
@@ -35,5 +35,5 @@
| um: | TODO |
| unicore32: | TODO |
| x86: | ok | 64-bit only
- | xtensa: | TODO |
+ | xtensa: | ok |
-----------------------
diff --git a/Documentation/features/debug/stackprotector/arch-support.txt b/Documentation/features/debug/stackprotector/arch-support.txt
index d7acd7bd3619..59a4c9ffb7f3 100644
--- a/Documentation/features/debug/stackprotector/arch-support.txt
+++ b/Documentation/features/debug/stackprotector/arch-support.txt
@@ -35,5 +35,5 @@
| um: | TODO |
| unicore32: | TODO |
| x86: | ok |
- | xtensa: | TODO |
+ | xtensa: | ok |
-----------------------
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