Improve non-normative text re: multiple PAUSEs

1 files changed, 6 insertions, 3 deletions

diff --git a/src/zihintpause.tex b/src/zihintpause.tex
index 5f0a2be..456e2c5 100644
--- a/src/zihintpause.tex
+++ b/src/zihintpause.tex
@@ -23,9 +23,12 @@ polling for.
 The duration of a PAUSE instruction's effect may vary significantly within and
 among implementations.
 In typical implementations this duration should be much less than the time to perform a context switch, probably more on the rough order of an on-chip cache miss latency or a cacheless access to main memory.
-Portable software should not use more than one PAUSE instruction before
-re-evaluating loop conditions, else performance might substantially degrade on
-other implementations, or even on some executions on the same implementation.
+
+A series of PAUSE instructions can be used to create a cumulative delay loosely
+proportional to the number of PAUSE instructions.
+In spin-wait loops in portable code, however, only one PAUSE instruction should
+be used before re-evaluating loop conditions, else the hart might stall longer
+than optimal on some implementations, degrading system performance.
 \end{commentary}
 
 PAUSE is encoded as a FENCE instruction with {\em pred}=W, {\em succ}=0,