tree 5fdfc9a40deb0a4157bddffed28322a2ff9e5875
parent e2fe16d91228a005811335fbc4fbad5d4f5b75af
author H. Peter Anvin <hpa@zytor.com> 1219106372 -0700
committer H. Peter Anvin <hpa@zytor.com> 1219108937 -0700

x86: add NOPL as a synthetic CPU feature bit

The long noops ("NOPL") are supposed to be detected by family >= 6.
Unfortunately, several non-Intel x86 implementations, both hardware
and software, don't obey this dictum.  Instead, probe for NOPL
directly by executing a NOPL instruction and see if we get #UD.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>