[PATCH v2 0/2] riscv: switch to relative extable

Jisheng Zhang
2021-10-20T14:12:24Z

From: Jisheng Zhang <jszhang@kernel.org>

Similar as other architectures such as arm64, x86 and so on, use
offsets relative to the exception table entry values rather than
absolute addresses for both the exception locationand the fixup.

patch1 consolidates the __ex_table construction, it's a great code
clean up even w/o the 2nd patch.

patch2 does the real job.

Since v1:
- fix build error for NOMMU case, thank lkp@intel.com

Jisheng Zhang (2):
riscv: consolidate __ex_table construction
riscv: switch to relative exception tables

arch/riscv/include/asm/Kbuild | 1 -
arch/riscv/include/asm/extable.h | 25 ++++++++++++++++++++
arch/riscv/include/asm/futex.h | 12 +++-------
arch/riscv/include/asm/uaccess.h | 40 +++++++++++---------------------
arch/riscv/lib/uaccess.S | 4 ++--
arch/riscv/mm/extable.c | 2 +-
scripts/mod/modpost.c | 27 +++++++++++++++++++++
scripts/sorttable.c | 2 +-
8 files changed, 73 insertions(+), 40 deletions(-)
create mode 100644 arch/riscv/include/asm/extable.h

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2.33.0