Re: [PATCH V8 10/20] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT

For this patch, we need to add below to fixup the rv32 call rv64 elf segment fault. diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h index 0749924d9e55..21c8072dce17 100644 --- a/arch/riscv/include/asm/processor.h +++ b/arch/riscv/include/asm/processor.h @@

[PATCH V8 10/20] riscv: compat: Re-implement TASK_SIZE for COMPAT_32BIT

From: Guo Ren Make TASK_SIZE from const to dynamic detect TIF_32BIT flag function. Refer to arm64 to implement DEFAULT_MAP_WINDOW_64 for efi-stub. Limit 32-bit compatible process in 0-2GB virtual address range (which is enough for real scenarios), because it could avoid address sign extend