userspace: llext: enable cache for loadable modules#10625
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lyakh wants to merge 1 commit intothesofproject:mainfrom
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userspace: llext: enable cache for loadable modules#10625lyakh wants to merge 1 commit intothesofproject:mainfrom
lyakh wants to merge 1 commit intothesofproject:mainfrom
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Modules, loaded via LLEXT and running in userspace should have all their sections mapped with enabled cache. This fixes performance degradation in userspace with DP. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
lyakh
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dbaluta,
kv2019i,
lbetlej and
mmaka1
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Pull request overview
Enables cached mappings for userspace LLEXT-loaded module sections to address performance degradation (DP) by ensuring .text, .rodata, .data, and cold sections are mapped with write-back caching.
Changes:
- ORs
XTENSA_MMU_CACHED_WBinto the memory partition attributes when adding module sections to a memory domain. - Mirrors the same cache attribute when removing partitions (including error cleanup paths).
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kv2019i
approved these changes
Mar 16, 2026
softwarecki
approved these changes
Mar 16, 2026
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softwarecki
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Thats exactly what I thought was causing the performance issues
tmleman
approved these changes
Mar 16, 2026
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Modules, loaded via LLEXT and running in userspace should have all their sections mapped with enabled cache. This fixes performance degradation in userspace with DP.