On 2024-03-12 6:53 PM, Charlie Jenkins wrote: > Support new prctl with key PR_RISCV_SET_ICACHE_FLUSH_CTX to enable > optimization of cross modifying code. This prctl enables userspace code > to use icache flushing instructions such as fence.i with the guarantee > that the icache will continue to be clean after thread migration. > > Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx> > Reviewed-by: Atish Patra <atishp@xxxxxxxxxxxx> > Reviewed-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx> > --- > arch/riscv/include/asm/mmu.h | 2 + > arch/riscv/include/asm/processor.h | 10 ++++ > arch/riscv/include/asm/switch_to.h | 23 ++++++++ > arch/riscv/mm/cacheflush.c | 111 +++++++++++++++++++++++++++++++++++++ > arch/riscv/mm/context.c | 19 ++++--- > include/uapi/linux/prctl.h | 6 ++ > kernel/sys.c | 6 ++ > 7 files changed, 169 insertions(+), 8 deletions(-) Thanks for the updates! Reviewed-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
