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| author | David Kruckemyer <47680170+dkruckemyer-ventana@users.noreply.github.com> | 2024-05-28 14:01:17 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-05-28 14:01:17 -0700 |
| commit | 5dbd85245f37a4b5598644130cc4fc78cafdf600 (patch) | |
| tree | d77de84884a5496bcf1d89607d0283297f9ee9c7 /src | |
| parent | c33a289ee447ae14c116a7a977aa3182613be4bc (diff) | |
| download | riscv-isa-manual-5dbd85245f37a4b5598644130cc4fc78cafdf600.zip riscv-isa-manual-5dbd85245f37a4b5598644130cc4fc78cafdf600.tar.gz riscv-isa-manual-5dbd85245f37a4b5598644130cc4fc78cafdf600.tar.bz2 | |
Clarify CBO access size (#1431)
Define access size to be size of cache block for PMP/PMA checks
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmo.adoc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/cmo.adoc b/src/cmo.adoc index f8d6044..42941bb 100644 --- a/src/cmo.adoc +++ b/src/cmo.adoc @@ -337,6 +337,9 @@ _This specification assumes that the above constraints will typically be met for main memory regions and may be met for certain I/O regions._ ==== +Additionally, for the purposes of PMP and PMA checks, the access size of a CMO +instruction equals the size of the cache block accessed by the instruction. + The Zicboz extension introduces an additional supported access type PMA for cache-block zero instructions. Main memory regions are required to support accesses by cache-block zero instructions; however, I/O regions may specify |