diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-31 11:23:29 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-31 11:23:29 -0800 |
commit | a1084542a8e83b8eb5aaf7e8ccb81b461e7d4ce8 (patch) | |
tree | f5960f2ba6c6a38423492a73c81ec06e4a0575d2 /arch/riscv/include/asm/kasan.h | |
parent | b70a2d6b29f7c5b621bf83f903f26fee5fe28efc (diff) | |
parent | 61ffb9d27860769c5d5596f6e4cca3cded2755e0 (diff) |
Merge tag 'riscv-for-linus-5.6-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
"This contains a handful of patches for this merge window:
- Support for kasan
- 32-bit physical addresses on rv32i-based systems
- Support for CONFIG_DEBUG_VIRTUAL
- DT entry for the FU540 GPIO controller, which has recently had a
device driver merged
These boot a buildroot-based system on QEMU's virt board for me"
* tag 'riscv-for-linus-5.6-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: dts: Add DT support for SiFive FU540 GPIO driver
riscv: mm: add support for CONFIG_DEBUG_VIRTUAL
riscv: keep 32-bit kernel to 32-bit phys_addr_t
kasan: Add riscv to KASAN documentation.
riscv: Add KASAN support
kasan: No KASAN's memmove check if archs don't have it.
Diffstat (limited to 'arch/riscv/include/asm/kasan.h')
-rw-r--r-- | arch/riscv/include/asm/kasan.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/kasan.h b/arch/riscv/include/asm/kasan.h new file mode 100644 index 000000000000..eee6e6588b12 --- /dev/null +++ b/arch/riscv/include/asm/kasan.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2019 Andes Technology Corporation */ + +#ifndef __ASM_KASAN_H +#define __ASM_KASAN_H + +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_KASAN + +#include <asm/pgtable.h> + +#define KASAN_SHADOW_SCALE_SHIFT 3 + +#define KASAN_SHADOW_SIZE (UL(1) << (38 - KASAN_SHADOW_SCALE_SHIFT)) +#define KASAN_SHADOW_START 0xffffffc000000000 /* 2^64 - 2^38 */ +#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) + +#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << \ + (64 - KASAN_SHADOW_SCALE_SHIFT))) + +void kasan_init(void); +asmlinkage void kasan_early_init(void); + +#endif +#endif +#endif /* __ASM_KASAN_H */ |