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Differential D56555

arm64/vmm: Move host-side EL2 regs into sys_regs
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Authored by kajetan.puchalski_arm.com on Apr 21 2026, 11:09 AM.
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emaste
imp

Details

Reviewers
andrew
manu
Group Reviewers
arm64
Summary

Move EL2 host registers that are not visible to the guest into
hypctx->sys_regs. Prefix them with HOST_ to distinguish from EL2
registers which are part of the guest's own state (e.g. in VNCR).

Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>

Diff Detail

Repository
rG FreeBSD src repository
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Unit
Tests Skipped
Build Status
Buildable 72414
Build 69297: arc lint + arc unit

Event Timeline

kajetan.puchalski_arm.com created this revision.Apr 21 2026, 11:09 AM
Herald added a reviewer: andrew. · View Herald TranscriptApr 21 2026, 11:09 AM
Herald added a reviewer: andrew. · View Herald Transcript
Herald added a reviewer: manu. · View Herald Transcript
Herald added subscribers: emaste, imp. · View Herald Transcript
kajetan.puchalski_arm.com requested review of this revision.Apr 21 2026, 11:09 AM
Harbormaster completed remote builds in B72414: Diff 175978.Apr 21 2026, 11:09 AM
kajetan.puchalski_arm.com added a parent revision: D56554: arm64/vmm: Move vttbr_el2 & vtimer into struct hypctx.Apr 21 2026, 11:09 AM
kajetan.puchalski_arm.com added a child revision: D56556: arm64/vmm: Make remaining registers use hypctx_*_sys_reg.
kajetan.puchalski_arm.com updated this revision to Diff 176100.Wed, Apr 22, 12:59 PM

Update

Harbormaster completed remote builds in B72439: Diff 176100.Wed, Apr 22, 12:59 PM
kajetan.puchalski_arm.com updated this revision to Diff 176106.Wed, Apr 22, 1:24 PM

Encode VNCR values into enum hypctx_sysreg as 64-bit offsets

Harbormaster completed remote builds in B72445: Diff 176106.Wed, Apr 22, 1:24 PM
kajetan.puchalski_arm.com updated this revision to Diff 176255.Thu, Apr 23, 2:28 PM

Handle non-VHE, store the vncr page as a pointer

Harbormaster completed remote builds in B72473: Diff 176255.Thu, Apr 23, 2:28 PM
kajetan.puchalski_arm.com updated this revision to Diff 176261.Thu, Apr 23, 2:39 PM

Fix non-VHE omission

Harbormaster completed remote builds in B72479: Diff 176261.Thu, Apr 23, 2:39 PM
kajetan.puchalski_arm.com updated this revision to Diff 176277.Thu, Apr 23, 5:31 PM

Fix omission

Harbormaster completed remote builds in B72491: Diff 176277.Thu, Apr 23, 5:31 PM
kajetan.puchalski_arm.com updated this revision to Diff 176319.Fri, Apr 24, 11:09 AM

Use char* for ptr arithmetic

Harbormaster completed remote builds in B72511: Diff 176319.Fri, Apr 24, 11:09 AM
kajetan.puchalski_arm.com updated this revision to Diff 176727.Tue, Apr 28, 2:14 PM

Address remaining style review comments

Harbormaster completed remote builds in B72612: Diff 176727.Tue, Apr 28, 2:14 PM
kajetan.puchalski_arm.com updated this revision to Diff 176987.Fri, May 1, 11:10 AM

Use Static_assert to ensure correct struct hypctx size

Harbormaster completed remote builds in B72699: Diff 176987.Fri, May 1, 11:10 AM
kajetan.puchalski_arm.com updated this revision to Diff 177460.Fri, May 8, 2:44 PM

Correct nVHE omission

Harbormaster completed remote builds in B72931: Diff 177460.Fri, May 8, 2:44 PM
kajetan.puchalski_arm.com updated this revision to Diff 178192.Wed, May 20, 11:42 AM

Address review comments

Harbormaster completed remote builds in B73279: Diff 178192.Wed, May 20, 11:42 AM

Revision Contents
Changeset List

PathSize
sys/
arm64/
vmm/
65 lines
io/
6 lines
34 lines
56 lines
357 lines

Diff 175978

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sys/arm64/vmm/arm64.h

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sys/arm64/vmm/io/vgic_v3.c

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sys/arm64/vmm/vmm_arm64.c

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sys/arm64/vmm/vmm_hyp.c

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sys/arm64/vmm/vmm_reset.c

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