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From: Markus Gebert <markus.gebert@hostpoint.ch>
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To: John Baldwin <jhb@freebsd.org>
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Subject: Re: 8.1-RC2 - PCI fatal error or MCE triggered by USB/ehci on Sun
	X4100M2?
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On 12.07.2010, at 17:06, John Baldwin wrote:

> Are you using Cx states other than C1 for the CPUs at all?

Not sure how to find out, but I did not change anything in the BIOS =
settings (if even possible) or through sysctl regarding cpu idle modes. =
Anyway, here's what I found:

# sysctl machdep.idle machdep.idle_available
machdep.idle: amdc1e
machdep.idle_available: spin, amdc1e, hlt, acpi,=20

Not sure if "amdc1e" qualifies for something "other than C1". I tried =
"hlt" once, which didn't make a difference IIRC. And if that's not what =
you needed, here's more:

# sysctl dev.cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=3D\_PR_.P001
dev.cpu.0.%pnpinfo: _HID=3Dnone _UID=3D0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 2786
dev.cpu.0.freq_levels: 2786/95000 2587/81800 2388/69811 2189/58977 =
1990/49240 1791/44316 995/22525
dev.cpu.0.cx_supported: C1/0
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% last 500us
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=3D\_PR_.P002
dev.cpu.1.%pnpinfo: _HID=3Dnone _UID=3D0
dev.cpu.1.%parent: acpi0
dev.cpu.1.cx_supported: C1/0
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00% last 500us
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=3D\_PR_.P003
dev.cpu.2.%pnpinfo: _HID=3Dnone _UID=3D0
dev.cpu.2.%parent: acpi0
dev.cpu.2.cx_supported: C1/0
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00% last 500us
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=3D\_PR_.P004
dev.cpu.3.%pnpinfo: _HID=3Dnone _UID=3D0
dev.cpu.3.%parent: acpi0
dev.cpu.3.cx_supported: C1/0
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00% last 500us


Markus=