Merge pull request #114 from markdryan/RVA22U64_Zihpm

Note in RVA22U64 that Zihpm was optional in RVA20U64
riscv · Feb 25, 2024 · 1ea1af3 · 1ea1af3
2 parents 47538b1 + 0d82c26
commit 1ea1af3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/profiles.adoc b/profiles.adoc
@@ -696,6 +696,8 @@ The following mandatory extensions were present in RVA20U64.
 - *Zicntr* Base counters and timers.
 - *Zihpm* Hardware performance counters.
 
+NOTE: Zihpm was optional in RVA20U64.
+
 - *Ziccif* Main memory regions with both the cacheability and
   coherence PMAs must support instruction fetch, and any instruction
   fetches of naturally aligned power-of-2 sizes up to min(ILEN,XLEN)