Updating kernel patch for a1200
These functions are basically parts of the kernel that programs can use to do some sort of task or operation.
Additionally, other functions may have also changed.
Livepatch is similar in functionality to the kpatch core module, though it doesn't yet have all the features that kpatch does. A kpatch replacement function is no different than a function loaded by any other kernel module. If you want to avoid a hardware reboot, but are ok with restarting processes, kexec is a good alternative. If an application can't handle a reboot, it's designed wrong. We hope to make the following changes to other projects: which will disable and unload the patch module and restore the function to its original state. This can be achieved by combining the new patch with the previous patch using If you have questions or feedback, join the #kpatch IRC channel on freenode and say hi. See the GNU General Public License for more details.
kpatch-build already works with both livepatch and kpatch. If you already have that capability, then you already have the ability to arbitrarily modify the kernel, with or without kpatch. How can I detect if somebody has patched the kernel? Each replacement function has its own symbol name and kallsyms entry, so it looks like a normal function to the kernel. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
The handler function is called by ftrace immediately before the original function begins executing. Why does kpatch use ftrace to jump to the replacement function instead of adding the jump directly?
This occurs with the help of the reserved mcount call at the beginning of every function, created by the gcc flag. ftrace owns the first "call mcount" instruction of every kernel function.
For most normal consumer-type users, updating your kernel outweighs those issues by a lot.
While those were the updates you get with minor kernel updates (say 3.2.0 to 3.2.1), let’s check out some improvements you can commonly see with major updates (think 3.2 to 3.3).
It gives more control over uptime without sacrificing security or stability. Kernel crashes, spontaneous reboots, and data loss may occur!While it’s always possible to go the proprietary route, knowing that the open source drivers keep getting better and better is good too.Occasionally, major updates to the kernel in Linux also brings some new functions.If your kernel has CONFIG_LIVEPATCH enabled, it detects that and builds a patch module in the livepatch format. The kpatch script also supports both patch module formats. Isn't this just a virus/rootkit injection framework? If you’re using a Linux distribution like Ubuntu or Fedora, you’re also using the Linux kernel, the core that actually makes your distribution a Linux distribution.