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Differential D37176

bhyve: Remove vestigial support for setting max vCPUs.
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Authored by jhb on Oct 27 2022, 3:06 PM.
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bcran
evgueni.gavrilov_itglobal.com
imp
rgrimes

Details

Reviewers
markj
corvink
manu
Group Reviewers
bhyve
Commits
rG320ce3c3c56b: bhyve: Remove vestigial support for setting max vCPUs.
rGbb1770105022: bhyve: Remove vestigial support for setting max vCPUs.
Summary

The kernel part of the hypervisor is not going to support per-VM
maxcpu limits. The topology is only used to control the values
returned by CPUID leaves for which max vCPUs is not relevant.

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rG FreeBSD src repository
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Event Timeline

jhb created this revision.Oct 27 2022, 3:06 PM
Herald added a reviewer: bhyve. · View Herald TranscriptOct 27 2022, 3:06 PM
Herald added subscribers: bcran, rgrimes, imp. · View Herald Transcript
jhb requested review of this revision.Oct 27 2022, 3:06 PM
Harbormaster completed remote builds in B48048: Diff 112285.Oct 27 2022, 3:06 PM
jhb added a parent revision: D37175: vmm: Convert VM_MAXCPU into a loader tunable hw.vmm.maxcpu..Oct 27 2022, 3:06 PM
evgueni.gavrilov_itglobal.com added a subscriber: evgueni.gavrilov_itglobal.com.Oct 28 2022, 6:13 AM
jhb retitled this revision from bhyve: Remove vestigal support for setting max vCPUs. to bhyve: Remove vestigial support for setting max vCPUs..Nov 3 2022, 11:14 PM
corvink accepted this revision.Nov 4 2022, 6:43 AM
This revision is now accepted and ready to land.Nov 4 2022, 6:43 AM
corvink added a reviewer: manu.Nov 4 2022, 7:03 AM
jhb added a parent revision: D37272: vmm: Trim some pointless #ifdef KTR..Nov 4 2022, 9:53 PM
jhb removed a parent revision: D37175: vmm: Convert VM_MAXCPU into a loader tunable hw.vmm.maxcpu..
markj accepted this revision as: markj.Nov 11 2022, 4:07 PM

Should vm_set_topology() be updated to indicate that maxcpus is unimplemented? I can see why you didn't remove the parameter at least.

jhb added a comment.Nov 18 2022, 6:08 PM

I may actually wait on this. It might still be useful to set the size of the maxcpus array by passing the limit in via a new vmm_create operation.

corvink added a comment.Nov 19 2022, 10:00 AM

I don't care. It's unused code, so we can remove it. If you like to add support to vm_create for maxcpus, you can easily revert this change. OTOH, it's fine to keep it as it is.

corvink added a comment.May 9 2023, 8:34 AM

@jhb Merge?

jhb added a comment.May 9 2023, 8:30 PM

I guess it's fine to merge.

Closed by commit rGbb1770105022: bhyve: Remove vestigial support for setting max vCPUs. (authored by jhb, committed by corvink). · Explain WhyJun 12 2023, 2:30 PM
This revision was automatically updated to reflect the committed changes.
corvink added a commit: rGbb1770105022: bhyve: Remove vestigial support for setting max vCPUs..
corvink added a commit: rG320ce3c3c56b: bhyve: Remove vestigial support for setting max vCPUs..Aug 17 2023, 1:29 PM

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usr.sbin/
bhyve/
7 lines

Diff 123101

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usr.sbin/bhyve/bhyverun.c

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