SUSE opines that the differentiating factor in its new live, runtime
patching solution for the Linux kernel, called kGraft, is its status as
the only competing solution in the upstream Linux kernel. By extension, none
of the other major Linux distributions provide updates this way. kGraft,
developed by SUSE Labs, makes it easier for IT staff to install critical
security and other patches without system downtime—the holy grail
of uptime. The net benefit for enterprise Linux users is a significant
enhancement of uptime in mission-critical environments. SUSE adds that
although kGraft is, by choice, limited to replacing whole functions and
constants they reference, this does not limit the set of code patches
that can be applied significantly. kGraft will offer tools to assist in
creating the live patch modules, identifying which functions need to be
replaced based on a patch and creating the patch module source code.
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