• Colin Cross's avatar
    arm64: implement TASK_SIZE_OF · fa2ec3ea
    Colin Cross authored
    include/linux/sched.h implements TASK_SIZE_OF as TASK_SIZE if it
    is not set by the architecture headers.  TASK_SIZE uses the
    current task to determine the size of the virtual address space.
    On a 64-bit kernel this will cause reading /proc/pid/pagemap of a
    64-bit process from a 32-bit process to return EOF when it reads
    past 0xffffffff.
    
    Implement TASK_SIZE_OF exactly the same as TASK_SIZE with
    test_tsk_thread_flag instead of test_thread_flag.
    
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarColin Cross <ccross@android.com>
    Acked-by: default avatarWill Deacon <will.deacon@arm.com>
    Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
    fa2ec3ea
memory.h 4.67 KB