• Max Filippov's avatar
    xtensa: fix boot parameters address translation · 40dc948f
    Max Filippov authored
    The bootloader may pass physical address of the boot parameters structure
    to the MMUv3 kernel in the register a2. Code in the _SetupMMU block in
    the arch/xtensa/kernel/head.S is supposed to map that physical address to
    the virtual address in the configured virtual memory layout.
    This code haven't been updated when additional 256+256 and 512+512
    memory layouts were introduced and it may produce wrong addresses when
    used with these layouts.
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>