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Bug #2781

closed

DFly 4.0.3; PC Engines APU AMD T40E CPU; kernel panic when when setting machdep.mwait.CX.idle=AUTO

Added by Anonymous almost 10 years ago. Updated almost 10 years ago.

Status:
Resolved
Priority:
Low
Assignee:
-
Category:
Kernel
Target version:
Start date:
01/30/2015
Due date:
% Done:

100%

Estimated time:

Description

Hi,

I get a kernel panic when doing "sysctl machdep.mwait.CX.idle=AUTO" (AUTODEEP does not work):

  1. sysctl machdep.mwait.CX.idle=AUTO
    machdep.mwait.CX.idle: INVALID

Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic->id = 01000000
fault virtual address = 0x3fffffff4
fault code = supervisor read data, page not present
instruction pointer = 0x8:0xffffffff809ccc6e
stack pointer = 0x10:0xffffffe02b458a80
frame pointer = 0x10:0xffffffe02b458ab0
code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
current thread = pri 12
kernel: type 12 trap, code=0

CPU1 stopping CPUs: 0x00000001
stopped
Stopped at cpu_idle+0x19a: movl (%rdx,%rax,4),%edx

The CPU should support C1 and C6 (see http://www.cpu-world.com/CPUs/Bobcat/AMD-G%20Series%20G-T40E%20-%20GET40EFQB22GVE.html).
BIOS is "Build 9/8/2014".

/boot/loader.conf:
boot_serial="YES"
sio0.baud="115200"
console="comconsole"
#powernow_load="YES" # XXX does not work with a T40E CPU (yet?)
amdsbwd_load="YES"
km_load="YES"

/etc/sysctl.conf:
kern.rand_mode=csprng
kern.ipc.somaxconn=1024
#machdep.mwait.CX.idle=AUTODEEP XXX

Some sysctls:
  1. sysctl kern.cputimer
    kern.cputimer.intr.select: lapic
    kern.cputimer.intr.freq: 100000264
    kern.cputimer.intr.reglist: lapic
    kern.cputimer.freq: 14318180
    kern.cputimer.clock: 754746750
    kern.cputimer.name: HPET
    kern.cputimer.select: HPET ACPI-safe i8254_timer2 dummy
  1. sysctl machdep.mwait
    machdep.mwait.CX.repeat_shift: 1
    machdep.mwait.CX.spin: INVALID
    machdep.mwait.CX.idle: INVALID
    machdep.mwait.CX.supported:
    machdep.mwait.C0.subcnt: 0
    machdep.mwait.C0.entered: 0
    machdep.mwait.C1.subcnt: 0
    machdep.mwait.C1.entered: 47478
    machdep.mwait.C2.subcnt: 0
    machdep.mwait.C2.entered: 0
    machdep.mwait.C3.subcnt: 0
    machdep.mwait.C3.entered: 0
    machdep.mwait.C4.subcnt: 0
    machdep.mwait.C4.entered: 0
    machdep.mwait.C5.subcnt: 0
    machdep.mwait.C5.entered: 0
    machdep.mwait.C6.subcnt: 0
    machdep.mwait.C6.entered: 0
    machdep.mwait.C7.subcnt: 0
    machdep.mwait.C7.entered: 0
  1. sysctl hw.acpi | grep cx
    hw.acpi.cpu.cx_lowest: C1
    hw.acpi.cpu.cx_lowest_use: C1
    hw.acpi.cpu0.cx_supported: C1/100
    hw.acpi.cpu0.cx_lowest: C1
    hw.acpi.cpu0.cx_lowest_use: C1
    hw.acpi.cpu0.cx_usage: 0.00% last 1000000us
    hw.acpi.cpu1.cx_supported: C1/100
    hw.acpi.cpu1.cx_lowest: C1
    hw.acpi.cpu1.cx_lowest_use: C1
    hw.acpi.cpu1.cx_usage: 0.00% last 1000000us
  1. sysctl hw.acpi.cpu | grep px
    hw.acpi.cpu.px_dom0.available: 1000 800
    hw.acpi.cpu.px_dom0.members: cpu1(800) cpu0(800)
    hw.acpi.cpu.px_dom0.select: 800
    hw.acpi.cpu.px_global: 1000

dmesg is attached


Files

dmesg.txt (10.7 KB) dmesg.txt Anonymous, 01/30/2015 01:01 AM
dmesg_verbose.txt (61.9 KB) dmesg_verbose.txt Anonymous, 01/30/2015 10:51 AM
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