tree ecdfc0dc851f440b0f5861b8c3fe6b582d516d1b
parent b74b06c5f6612a72298f37baa65460a59c26ca67
author H. Peter Anvin <hpa@zytor.com> 1219106372 -0700
committer H. Peter Anvin <hpa@zytor.com> 1220656432 -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>