Via Nano CPU: Can boot 7.0-RELEASE-amd64, can't boot 7.1-RELEASE-amd64: "cpu doesn't support long mode"

[George Hartzell]

John Baldwin writes:
 > On Monday 05 January 2009 4:16:36 pm Jung-uk Kim wrote:
 > > On Monday 05 January 2009 02:24 pm, Koen Smits wrote:
 > > > Hello all,
 > > >
 > > > I have some problems getting FreeBSD 7.1-RELEASE amd64 to boot on
 > > > my VIA VB8001, which is a mini-ITX board with the new VIA Nano CPU.
 > > > This CPU is fully 64bit capable. But, when I try to boot Disc1 from
 > > > an IDE CD-ROM I get the error "cpu doesn't support long mode",
 > > > which implies the CPU can't do 64bit, and booting halts asking for
 > > > a kernel.
 > > > The first thing I tried was running ubuntu 8.10 64bit. It installs
 > > > and runs fine. And, trying FreeBSD 7.0-RELEASE Disc1 amd64 also
 > > > boots and installs normally!
 > > > Any help on fixing this is much appreciated.
 > > 
 > > See:
 > > 
 > > http://svn.freebsd.org/viewvc/base?view=revision&revision=183667
 > > http://svn.freebsd.org/viewvc/base?view=revision&revision=183823
 > > 
 > > I am not sure removing Via CPU support was intentional, though.
 > 
 > Definitely not.  At the time the kernel didn't support the Via CPU either.  It 
 > seems you have fixed both the loader and kernel since, however.

The fix to the loader has a comment about MFC'ing in a week, but there
are a bunch of changes to support padlock, MSI, etc... that don't have
any such directives.

When there isn't an explicit MFC directive with the commit, what does
that mean for plans to merge them back to -STABLE?

Thanks,

g.