Hello fellow Gentoo user,
Please try these settings:
CONFIG_MK8=y
CONFIG_SCHED_SMT=n
CONFIG_X86_GENERIC=n
By the way you should say no to CONFIG_COMPAT_VDSO. Gentoo does not
use old versions of GLIBC. You take advantage of randomized VDSO if
you say no.
Send me your .config if it still does not work.
Cheers,
Ed
On 10/16/07, Percy <[EMAIL PROTECTED]> wrote:
> On 10/17/07, Percy <[EMAIL PROTECTED]> wrote:
> > On 10/17/07, Percy <[EMAIL PROTECTED]> wrote:
> > > I have an AMD64 X2 dual core CPU Before, the cpuinfo displays 2
> > > processors but not until recently, I just found out that
> > > /proc/cpuinfo recognizes this as single processor. Too bad I was not
> > > able to backup the old kernel (I'm using gentoo genkernel in building
> > > kernel.)
> > >
> > > This problem exists in gentoo/ubuntu live cds - there were 2
> > > processors recognized in /proc/cpuinfo. I also tried using the
> > > configuration of the live cds pero I was not able to solve the
> > > problem.
> > >
> > > By the way, I have the following features enabled in my config ( I'm
> > > using 2.6.22-gentoo-r8 custom kernel) :
> > >
> > > Processor type and features
> > > [*] Symmetric multi-processing support
> > > [*] SMT (Hyperthreading) scheduler support
> > > [*] Multi-core scheduler support
> > >
> > > Any thoughts?
> > >
> >
> > ERRATA : This problem DOES NOT exist in gentoo/ubuntu live cds - there
> > were 2 processors recognized in /proc/cpuinfo. I also tried using the
> > configuration of the live cds pero I was not able to solve the
> > problem.
> >
>
> More info from dmesg:
>
> Checking if this processor honours the WP bit even in supervisor mode... Ok.
> Calibrating delay using timer specific routine.. 4089.87 BogoMIPS
> (lpj=20449367)
> Mount-cache hash table entries: 512
> CPU: After generic identify, caps: 178bfbff ebd3fbff 00000000 00000000
> 00002001 00000000 0000001f
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 512K (64 bytes/line)
> CPU 0(2) -> Core 0
> CPU: After all inits, caps: 178bfbff ebd3fbff 00000000 00000410
> 00002001 00000000 0000001f
> Compat vDSO mapped to ffffe000.
> Checking 'hlt' instruction... OK.
> SMP alternatives: switching to UP code
> ACPI: Core revision 20070126
> CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02
> SMP alternatives: switching to SMP code
> Booting processor 1/1 eip 3000
> CPU 1 irqstacks, hard=c0465000 soft=c045d000
> Not responding.
> Inquiring remote APIC #1...
> ... APIC #1 ID: 1000000
> ... APIC #1 VERSION: 80050010
> ... APIC #1 SPIV: ff
> CPU #1 not responding - cannot use it. ************** << What causes this?!?!
> Total of 1 processors activated (4089.87 BogoMIPS).
> ENABLING IO-APIC IRQs
>
> Tried passing noapic in the kernel pero wala pa rin....
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