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Differential D24495

Make mpentry independent of _start
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Authored by mhorne on Apr 19 2020, 2:13 AM.
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jrtc27
br
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riscv
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rS360551: Make mpentry independent of _start
Summary

APs enter the kernel at the same point as the BSP, the _start routine.
They then jump to mpentry, but not before storing the kernel's physical
load address in the s9 register. Extract this calculation into its own
routine, so that APs can be instructed to enter directly from mpentry.

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rS FreeBSD src repository - subversion
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Event Timeline

mhorne created this revision.Apr 19 2020, 2:13 AM
Harbormaster completed remote builds in B30601: Diff 70762.Apr 19 2020, 2:13 AM
mhorne added a child revision: D24497: Use the HSM SBI extension to start APs.Apr 30 2020, 1:52 AM
This revision was not accepted when it landed; it landed in state Needs Review.May 1 2020, 9:52 PM
Closed by commit rS360551: Make mpentry independent of _start (authored by mhorne). · Explain Why
This revision was automatically updated to reflect the committed changes.
mhorne added a commit: rS360551: Make mpentry independent of _start.
Herald added a subscriber: imp. · View Herald TranscriptMay 1 2020, 9:52 PM

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head/
sys/
riscv/
riscv/
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head/sys/riscv/riscv/locore.S

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