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GCC optimizations and their impact on livepatch
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One Line Summary
Describe different GCC optimizations which have certain impact on kernel live patching.
Abstract
GCC performs inter-procedural analysis (IPA) during a compilation and executes different optimizations based on the outcome of IPA. There are several which have impact on livepatch – for example RA, SRA and CP. There is also an issue of dead code elimination.
The aim of the talk is to discuss possible solutions.
Presentation Materials
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Biography
Miroslav is Linux kernel developer at SUSE, where he is responsible for development and release of kGraft patches, and an upstream co-maintainer of livepatch.