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LOWEST_VADDR_CURR_PRIV/HIGHEST_VADDR_CURR_PRIV #8

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janhoogerbrugge-nxp opened this issue Dec 10, 2024 · 1 comment

janhoogerbrugge-nxp commented Dec 10, 2024

I was wondering where these values are coming from:

LOWEST_VADDR_CURR_PRIV: Lowest virtual address in current privilege.
HIGHEST_VADDR_CURR_PRIV: Highest virtual address in current privilege.

Are these values 0 and 2^64-1 or something else? If something else, how does the core get them?

Jan.

Collaborator

deepak0414 commented Jan 1, 2025

Sorry for being late on this.

Since memory tagging is 64 bit only feature.
Planning to make a dependency of Svatag on Svukte (riscv/riscv-isa-manual#1564)

Svukte makes it implicit that user and supervisor are split half evenly.

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