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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-19 07:24:56 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-19 07:24:56 -0700 |
| commit | 2667e3673f7079cf95d58cf84d7c0b5a455ac68b (patch) | |
| tree | 750f9c129c9f93ba34d19b909abd0b8e7e61e721 /arch/riscv/mm/init.c | |
| parent | 2e75ab3189ecfe5f4383ef82896d30eaad0b3cd6 (diff) | |
| parent | 864046c512c2cd8418dc928b91981fb12a80396c (diff) | |
Merge patch series "RISC-V kasan rework"
Alexandre Ghiti <alexghiti@rivosinc.com> says:
As described in patch 2, our current kasan implementation is intricate,
so I tried to simplify the implementation and mimic what arm64/x86 are
doing.
In addition it fixes UEFI bootflow with a kasan kernel and kasan inline
instrumentation: all kasan configurations were tested on a large ubuntu
kernel with success with KASAN_KUNIT_TEST and KASAN_MODULE_TEST.
inline ubuntu config + uefi:
sv39: OK
sv48: OK
sv57: OK
outline ubuntu config + uefi:
sv39: OK
sv48: OK
sv57: OK
Actually 1 test always fails with KASAN_KUNIT_TEST that I have to check:
KASAN failure expected in "set_bit(nr, addr)", but none occurrred
Note that Palmer recently proposed to remove COMMAND_LINE_SIZE from the
userspace abi
https://lore.kernel.org/lkml/20221211061358.28035-1-palmer@rivosinc.com/T/
so that we can finally increase the command line to fit all kasan kernel
parameters.
All of this should hopefully fix the syzkaller riscv build that has been
failing for a few months now, any test is appreciated and if I can help
in any way, please ask.
* b4-shazam-merge:
riscv: Unconditionnally select KASAN_VMALLOC if KASAN
riscv: Fix ptdump when KASAN is enabled
riscv: Fix EFI stub usage of KASAN instrumented strcmp function
riscv: Move DTB_EARLY_BASE_VA to the kernel address space
riscv: Rework kasan population functions
riscv: Split early and final KASAN population functions
Link: https://lore.kernel.org/r/20230203075232.274282-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/mm/init.c')
| -rw-r--r-- | arch/riscv/mm/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 7bd66795165d..f803671d18b2 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -57,7 +57,7 @@ unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] EXPORT_SYMBOL(empty_zero_page); extern char _start[]; -#define DTB_EARLY_BASE_VA PGDIR_SIZE +#define DTB_EARLY_BASE_VA (ADDRESS_SPACE_END - (PTRS_PER_PGD / 2 * PGDIR_SIZE) + 1) void *_dtb_early_va __initdata; uintptr_t _dtb_early_pa __initdata; |