Re: initcpu.c r199067 boot hang

On Thu, Nov 12, 2009 at 1:48 AM, David Horn <dhorn2000_at_gmail.com> wrote:
> I am seeing a problem on my Dell Inspiron 1520 laptop causing a boot
> failure (hang) after r199067 with -CURRENT.   Kernel with 199066 works
> fine.
>
> System is amd64 running generic kernel, and no loader.conf entries.
> System has latest bios update.
>
> CPU: Intel(R) Core(TM)2 Duo CPU     T7500  _at_ 2.20GHz (2194.52-MHz K8-class CPU)
>  Origin = "GenuineIntel"  Id = 0x6fa  Stepping = 10
>  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>  Features2=0xe3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
>  AMD Features=0x20100800<SYSCALL,NX,LM>
>  AMD Features2=0x1<LAHF>
>  TSC: P-state invariant
> real memory  = 2147483648 (2048 MB)
> avail memory = 2052681728 (1957 MB)
> ACPI APIC Table: <DELL   M08    >
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> FreeBSD/SMP: 1 package(s) x 2 core(s)
>  cpu0 (BSP): APIC ID:  0
>  cpu1 (AP): APIC ID:  1
>
>
> Root FS happens to be on USB (although looking at the svn diff for
> 199067, I am guessing this does not make a difference)  Hang occurs
> right about the time that I would expect to normally see the
> following:
>
> SMP: AP CPU #1 Launched!
>
> This is a hard hang requiring 4 second power button push.
>
> Please let me know if any additional details or tests would be useful.
>
> ---Dave Horn
>

For the record, SVN r199253 fixes this issue.

--Dave