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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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Details

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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Event Timeline

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

Reorder PTE_TO_PHYS and PHYS_TO_PTE

This revision now requires review to proceed.Dec 11 2024, 3:13 PM
This revision is now accepted and ready to land.Dec 12 2024, 10:47 AM