CVS commit: src/sys/arch/x86/x86

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sun Jun 17 07:13:02 UTC 2018

Modified Files:
        src/sys/arch/x86/x86: identcpu.c

Log Message:
Enable eager fpu automatically at boot time if the cpu is affected. Intel
hasn't published a list of its affected products, but it appears that Xen
was given this information since they have a specific detection code.

We could just unconditionally enable eager; but on x86_32 eager may have
a greater performance cost than lazy, and we don't want to lose
performance on unaffected (and ~old) CPUs running NetBSD/i386.

So use the same code as Xen: take Family 6, and whitelist certain models.


To generate a diff of this commit:
cvs rdiff -u -r1.71 -r1.72 src/sys/arch/x86/x86/identcpu.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.