From: cross@spitfire.i.gajendra.net   
      
   In article ,   
   John Dallman  wrote:   
   >In article <10c2vif$c1q$1@reader2.panix.com>,   
   >cross@spitfire.i.gajendra.net (Dan Cross) wrote:   
   >   
   >> I've been told that the BOOM (Berkeley Out-of-Order Machine) was   
   >> quite zippy, so I don't think there are any architectural issues   
   >> making RV64 fast.  I know that they way they do optional   
   >> features gives folks a lot of pain ... fragmentation is a real   
   >> issue, and may be hindering adoption.   
   >   
   >That's meant to be handled by the RVA series of "profiles." Meeting an   
   >application profile requires a specified set of extensions, with a   
   >smaller set discoverable at run-time.   
   >   
   >The latest profile is RVA23, which was ratified in October 2024.   
   >   
      
   Yeah, I understand the profiles idea, but it's supporting that   
   smaller set of extensions discoverable at run-time that's the   
   problem.  I know a lot of people working on RISC-V firmware, and   
   this (and the forced use of the SBI) seems to be the major   
   sources of friction.  Folks have gone as far as calling it a   
   "soft core target."   
      
   >I'm hoping that RVA24 will be ratified soon, and will contain the   
   >extensions that the Android kernel team have been waiting for.   
      
   Cool.  Standardized atomics will be good.   
      
   	- Dan C.   
      
   --- SoupGate-Win32 v1.05   
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