Hi Seth, (2014/11/21 7:29), Seth Jennings wrote: > Summary: > > This patchset implements an ftrace-based mechanism and kernel interface for > doing live patching of kernel and kernel module functions. It represents the > greatest common functionality set between kpatch [1] and kGraft [2] and can > accept patches built using either method. This solution was discussed in the > Live Patching Mini-conference at LPC 2014 [3]. > > The model consists of a live patching "core" that provides an interface for > other "patch" kernel modules to register patches with the core. > > Patch modules contain the new function code and create an klp_patch structure > containing the required data about what functions to patch, where the new code > for each patched function resides, and in which kernel object (vmlinux or > module) the function to be patch resides. The patch module then invokes the > klp_register_patch() function to register with the core, then > klp_enable_patch() > to have the core redirect the execution paths using ftrace. > > An example patch module can be found here: > https://github.com/spartacus06/livepatch/blob/master/patch/patch.c
Hmm, I think we should import this example under samples/livepatch/ or tools/testing/selftests/livepatch/ for self testing, so that others can easily see what will happen. :) Thank you, -- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Research Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
