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Divergence with tcmalloc on arm64 about rr HOT 2 OPEN

pcc avatar pcc commented on May 20, 2024
Divergence with tcmalloc on arm64

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pcc avatar pcc commented on May 20, 2024

The kernel side of this is https://lore.kernel.org/all/[email protected]/T/

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pcc avatar pcc commented on May 20, 2024

(I also confirmed that it's CNTVCT_EL0 -- if I nop out the MRS instruction in the binary I can no longer reproduce the divergence.)

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