est on newer CPU

[Ben Widawsky]

On 19-02-20 12:23:47, Milan Obuch wrote:
> On Tue, 19 Feb 2019 12:44:57 -0800
> Ben Widawsky <bwidawsk at freebsd.org> wrote:
> 
> > On 19-02-18 18:01:19, Milan Obuch wrote:
> > > Hi,
> > > 
> > > I have currently installed FreeBSD on HP gen10 server. With an
> > > exception of HP RAID controller, needs to be switched to SATA mode,
> > > everything went well (OK, I did some errors so it was a bit of
> > > trials-errors but basically no problem).
> > > 
> > > Now I found there is not working powerd - in dmesg
> > > 
> > > est: CPU supports Enhanced Speedstep, but is not recognized.
> > > est: cpu_vendor GenuineIntel, msr 20b600002500
> > > device_attach: est0 attach returned 6
> > > 
> > > CPU is
> > > 
> > > CPU: Intel(R) Pentium(R) Gold G5400 CPU @ 3.70GHz (3696.18-MHz
> > > K8-class CPU)
> > > 
> > > Actual system version is
> > > 
> > > 12.0-STABLE FreeBSD 12.0-STABLE r344230
> > > 
> > > Is there something I can do to get est recognize this CPU and get
> > > working powerd?
> > > 
> > > Regards,
> > > Milan  
> > 
> > To start with, can you try
> > hw.est.msr_info=1
> >
> 
> Well, I tried and put this line into /boot/loader.conf, but the result
> was endless boot loop. No idea what is wrong... it just quickly loops,
> most probably inserted line is causing system reset.
> 
> > Also, is acpi_perf being loaded?
> >
> 
> No, there is no such file in /boot/kernel at all.
> 

It wouldn't be in /boot/kernel, if you're not explicitly disabling it, it should
be there. I have a feeling your ACPI tables have some weirdness to them. Might
be worth looking for a BIOS upgrade if you haven't already.

I can't look right away, but you could put a dump of your acpi tables for later
debug.

> Also, I tried 13-CURRENT last snapshot, it boot OK, but the net result
> is the same - est could not attach, because CPU is not recognized.
> 
> On another system, with different Intel CPU, it works.
> 
> Milan
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