On Monday 21 January 2008, David Robillard wrote:
> > Getting an error when trying to compile a kernel on 5.4 and 6.2 with the
> > PAE option. I've tried NO_MODULES in make.conf as well...
> >
> > se2 -ffreestanding -Werror  /usr/src/sys/dev/advansys/advansys.c
> > /usr/src/sys/dev/advansys/advansys.c: In function `adv_action':
> > /usr/src/sys/dev/advansys/advansys.c:260: warning: cast from pointer to
> > integer of different size *** Error code 1
> >
> > Stop in /usr/obj/usr/src/sys/WEBTENT.
> > *** Error code 1
> >
> > Stop in /usr/src.
> > *** Error code 1
> >
> > Stop in /usr/src.
> >
> > This is a custom kernel build with the QUOTA option, I take out the PAE
> > option and all makes fine. I did a src-all update with RELENG_VER tag
> > prior to building. I assume this is a driver issue compatible with PAE?
> >
> > Also, can I run amd64 release on this Intel Xeon dual proc with 6GB RAM?
> > Thinking about loading 6.3 amd64 if possible. Excuse my ignorance, I am
> > not a hardware guy, I am a programmer.
> >
> > CPU: Intel(R) Xeon(TM) CPU 3.00GHz (3000.12-MHz 686-class CPU)
> >   Origin = "GenuineIntel"  Id = 0xf41  Stepping = 1
> >  
> > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,
> >MCA,C MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> >   Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>>
> >   AMD Features=0x20100000<NX,LM>
Note the LM feature here:        ^^
This means the CPU supports "Long Mode", which basically means the cpu 
supports the 64bit extensions needed for FreeBSD/amd64.

> >   Logical CPUs per core: 2
>
> According to http://www.freebsd.org/platforms/amd64.html the Intel
> Xeon (3000-sequence, 5000-sequence, and 7000-sequence) processors use
> the Intel(R)64 architecture.
> Therefore if your Intel Xeon is in the 3000-sequence, 5000-sequence or
> 7000-sequence, then you can use FreeBSD/amd64 and use the memory above
> 4Gb. IMHO it should be more simple and efficient than compiling a
> kernel with PAE support.
>
> HTH,
>
> David

- Pieter de Goeje
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