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feat: enable CONFIG_ZERO_CALL_USED_REGS #37

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Merged
HastD merged 3 commits into from
Oct 1, 2026
Merged

feat: enable CONFIG_ZERO_CALL_USED_REGS #37

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9cb7301
feat: enable CONFIG_ZERO_CALL_USED_REGS
RoyalOughtness Oct 1, 2026
f9dfbe9
fix
RoyalOughtness Oct 1, 2026
86bd17d
fix
RoyalOughtness Oct 1, 2026
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6 changes: 6 additions & 0 deletions copr_script.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,12 @@ configs_to_enable=(
# https://www.kernelconfig.io/CONFIG_IOMMU_DEFAULT_DMA_STRICT
# Equivalent to defaulting iommu.passthrough=0 iommu.strict=1, already set by our kargs
CONFIG_IOMMU_DEFAULT_DMA_STRICT

# https://www.kernelconfig.io/CONFIG_ZERO_CALL_USED_REGS
# Zero contents of caller-used registers before returning.
# Reduces side channel attack vectors with negligible perf impact and a
# slight increase in kernel image size (<1% on x86_64, 5% on aarch64)
CONFIG_ZERO_CALL_USED_REGS
)

configs_to_disable=(
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