x86: initialize initial FPU state earlier
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Authored by kib on May 27 2021, 4:37 PM.

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jhb

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rGc56de177d282: x86: initialize initial FPU state earlier

Summary

Make it under SI_SUB_CPU sysinit, instead of much later SI_SUB_DRIVERS. The SI_SUB_DRIVERS survived from times when FPU used real ISA attachment, now it is only pnp stub claiming id.

PR: 255997

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rG FreeBSD src repository

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Event Timeline

kib requested review of this revision.May 27 2021, 4:37 PM

kib created this revision.

jhb added inline comments.May 27 2021, 9:57 PM

sys/amd64/amd64/fpu.c
498	Can this be SI_ORDER_ANY? I can't recall if there is a specific order to the SI_SUB_CPU inits.

Use SI_ORDER_ANY on amd64, same as on i386.

jhb accepted this revision.May 28 2021, 5:49 PM

This revision is now accepted and ready to land.May 28 2021, 5:49 PM

Closed by commit rGc56de177d282: x86: initialize initial FPU state earlier (authored by kib). · Explain WhyMay 28 2021, 6:39 PM

This revision was automatically updated to reflect the committed changes.

kib added a commit: rGc56de177d282: x86: initialize initial FPU state earlier.

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sys/

amd64/

fpu.c

2 lines

i386/

npx.c

2 lines

Diff 90073

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sys/amd64/amd64/fpu.c