riscv: mm: Fixup compat mode boot failure #397
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In COMPAT mode, the STACK_TOP is 0x80000000, but the TASK_SIZE is 0x7fff000. When the user stack is upon 0x7fff000, it will cause a user segment fault. Sometimes, it would cause boot failure when the whole rootfs is rv32. Freeing unused kernel image (initmem) memory: 2236K Run /sbin/init as init process Starting init: /sbin/init exists but couldn't execute it (error -14) Run /etc/init as init process ... Fixes: add2cc6 ("RISC-V: mm: Restrict address space for sv39,sv48,sv57") Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
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Pull request for series with
subject: riscv: mm: Fixup compat mode boot failure
version: 1
url: https://patchwork.kernel.org/project/linux-riscv/list/?series=811363