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Differential D46624

arm64: Support mapping a 52-bit physical adddress
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Authored by andrew on Sep 10 2024, 2:41 PM.
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alc
kib
markj
manu
Group Reviewers
arm64
Commits
rG3041b636463d: arm64: Support mapping a 52-bit physical adddress
Summary

When FEAT_LPA2 is enabled the physical address space increases from
48-bits to 52-bits. The top two address bits are moved to the now
unused shareability field.

Update the kernel to support this new larger address space.

Sponsored by: Arm Ltd

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rG FreeBSD src repository
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Tests Not Applicable

Event Timeline

andrew created this revision.Sep 10 2024, 2:41 PM
Herald added a reviewer: manu. · View Herald TranscriptSep 10 2024, 2:41 PM
Herald added subscribers: emaste, imp. · View Herald Transcript
andrew requested review of this revision.Sep 10 2024, 2:41 PM
Harbormaster completed remote builds in B59422: Diff 143191.Sep 10 2024, 2:41 PM
andrew added a child revision: D46625: stand/efi: Limit where we load the arm64 kernel.Sep 10 2024, 2:41 PM
andrew added a parent revision: D46395: arm64: Make L1_BLOCKS_SUPPORTED dynamic.Sep 10 2024, 2:42 PM
alc accepted this revision.Sep 15 2024, 5:55 PM
alc added inline comments.
sys/arm64/include/pte.h
94–116

Just as a matter of style, why not place these below the definitions of ATTR_OA_51_50_MASK and ATTR_OA_51_50_DELTA?

This revision is now accepted and ready to land.Sep 15 2024, 5:55 PM
andrew updated this revision to Diff 147815.Dec 11 2024, 3:13 PM

Reorder PTE_TO_PHYS and PHYS_TO_PTE

This revision now requires review to proceed.Dec 11 2024, 3:13 PM
Harbormaster completed remote builds in B61085: Diff 147815.Dec 11 2024, 3:13 PM
kib accepted this revision.Dec 12 2024, 10:47 AM
This revision is now accepted and ready to land.Dec 12 2024, 10:47 AM
Closed by commit rG3041b636463d: arm64: Support mapping a 52-bit physical adddress (authored by andrew). · Explain WhyJan 24 2025, 12:12 PM
This revision was automatically updated to reflect the committed changes.
andrew added a commit: rG3041b636463d: arm64: Support mapping a 52-bit physical adddress.

Revision Contents
Changeset List

PathSize
sys/
arm64/
arm64/
2 lines
include/
2 lines
1 line
2 lines
52 lines
vmm/
10 lines

Diff 149869

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sys/arm64/arm64/pmap.c

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sys/arm64/include/armreg.h

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sys/arm64/include/hypervisor.h

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sys/arm64/include/pmap.h

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sys/arm64/include/pte.h

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sys/arm64/vmm/vmm_arm64.c

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