Perf optimization, Alibaba PVM compatibility, and security hardening - #1007

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dywongcloud wants to merge 9 commits into

microsoft:mainfrom

dywongcloud:claude/ultracode-perf-x86-alibaba-tl6lcg

Commits on Jul 6, 2026

Optimize hot paths and add x86 PVM guest compatibility
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Bump linux_userland globals ratchet for the alt-stack pool
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Fall back to arch_prctl when user-mode FSGSBASE is unavailable
dywongcloud
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Pre-set ACCESSED/DIRTY page-table flags on fault-in (#980)
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Address adversarial review findings on the perf/PVM change-set
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Perform FUTEX_CMP_REQUEUE value check under the source bucket lock
dywongcloud
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Close a full sandbox escape and three memory-corruption/DoS bugs
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Merge branch 'main' into claude/ultracode-perf-x86-alibaba-tl6lcg
dywongcloud
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Merge pull request #1 from dywongcloud/claude/ultracode-perf-x86-alibaba-tl6lcg
dywongcloud
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