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Clarify CBO access size #1431

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May 28, 2024
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Define access size to be size of cache block for PMP/PMA checks

Define access size to be size of cache block for PMP/PMA checks
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@aswaterman aswaterman left a comment

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Are you sure this is just a clarification? I agree this definition is the logical choice, but there's risk that implementations with PMP granularity less than cache block size used to be conformant to the spec (since this was left unspecified) and now are not.

If this has already been discussed, then I'll go ahead and merge it.

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Nevermind. After reading the discussion on riscv/riscv-CMOs#60, I agree this can be argued to just be a clarification.

@aswaterman aswaterman merged commit 5dbd852 into riscv:main May 28, 2024
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@dkruckemyer-ventana dkruckemyer-ventana deleted the access-size-CBO branch May 28, 2024 23:27
ved-rivos pushed a commit to ved-rivos/riscv-isa-manual that referenced this pull request Jul 3, 2024
Define access size to be size of cache block for PMP/PMA checks
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2 participants