• Pekka Paalanen's avatar
    x86: add a list for custom page fault handlers. · 86069782
    Pekka Paalanen authored
    Provides kernel modules a way to register custom page fault handlers.
    On every page fault this will call a list of registered functions. The
    functions may handle the fault and force do_page_fault() to return
    immediately.
    
    This functionality is similar to the now removed page fault notifiers.
    Custom page fault handlers are used by debugging and reverse engineering
    tools. Mmiotrace is one such tool and a patch to add it into the tree
    will follow.
    
    The custom page fault handlers are called earlier in do_page_fault()
    than the page fault notifiers were.
    Signed-off-by: default avatarPekka Paalanen <pq@iki.fi>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    86069782
Kconfig.debug 8.02 KB