[kpatch] Stacking patches which introduce new data

Ross Lagerwall ross.lagerwall at citrix.com
Tue Sep 20 13:05:36 UTC 2016


Hi,

The recommended way of applying multiple patches is to apply cumulative 
patches on top of the existing ones [1].

If the first patch introduces some new static/global data, the second 
patch, being cumulative, will define the same new static/global data. 
When the second patch is loaded, it will use its own copy of the new 
data which may not contain the same values as the existing data from 
patch 1.

Has this problem been considered at all? Are there any known solutions?

[1] https://www.redhat.com/archives/kpatch/2015-November/msg00001.html

Thanks,
-- 
Ross Lagerwall




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