-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chris Ong wrote:
> Hi Friends, > I am having a machine with 2 x Xeon 2.8Ghz w/HT/EM64T. > > I am using the minimal-amd64 iso to boot up and install the > machine and it's a sucess. > > But there's a doubt here.. > > During the installation stage, the kernel provided with the > Minimal CD will actually tell 4 CPU. Correct as Real CPU + HT CPU. > But when I booted the machine with my own kernel. It shows only 2. > Here's the extraction of config.gz > > # Processor type and features > # > # CONFIG_MK8 is not set > CONFIG_MPSC=y > # CONFIG_GENERIC_CPU is not set > CONFIG_X86_L1_CACHE_BYTES=128 > CONFIG_X86_L1_CACHE_SHIFT=7 > CONFIG_X86_TSC=y > CONFIG_X86_GOOD_APIC=y > # CONFIG_MICROCODE is not set > # CONFIG_X86_MSR is not set > # CONFIG_X86_CPUID is not set > CONFIG_X86_HT=y > CONFIG_X86_IO_APIC=y > CONFIG_X86_LOCAL_APIC=y > CONFIG_MTRR=y > CONFIG_SMP=y > CONFIG_PREEMPT=y > CONFIG_PREEMPT_BKL=y > CONFIG_SCHED_SMT=y > # CONFIG_K8_NUMA is not set > # CONFIG_NUMA_EMU is not set > # CONFIG_NUMA is not set > CONFIG_HAVE_DEC_LOCK=y > CONFIG_NR_CPUS=4 > CONFIG_HPET_TIMER=y > # CONFIG_HPET_EMULATE_RTC is not set > # CONFIG_GART_IOMMU is not set > CONFIG_DUMMY_IOMMU=y > CONFIG_X86_MCE=y > CONFIG_X86_MCE_INTEL=y > CONFIG_SECCOMP=y > CONFIG_GENERIC_HARDIRQS=y > CONFIG_GENERIC_IRQ_PROBE=y > CONFIG_ISA_DMA_API=y > > I have the same problem before when I try to compile > kernel-2.6.12.5 in FC4 with a P4 3.0 w/HT. I also lost the virtual CPU. > > Did the kernel-2.6.12.5 treat HT CPU differently ? > > I hope I can find the answer in the kernel changelog. But it's > quite impossible for me right now. Any ideas ? > > --- > Regards, > C. K. Ong (Chris) > Linux System Engineer > RHCT Cert No: 603004347692007 > http://www.redhat.com/rhce/rhce603004347692007.html > > My Directory Sdn. Bhd. > Your Open Source Partner. > http://www.md.com.my http://www.net.my > 2005 > I'm running a P4 3.0GHz w/ HT and it works fine for me. Here's what is in my config, that's not in yours: CONFIG_X86_PC=y CONFIG_MPENTIUM4=y CONFIG_X86_GENERIC=y CONFIG_X86_CMPXCHG=y CONFIG_X86_XADD=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_X86_WP_WORKS_OK=y CONFIG_X86_INVLPG=y CONFIG_X86_BSWAP=y CONFIG_X86_POPAD_OK=y CONFIG_X86_INTEL_USERCOPY=y CONFIG_X86_USE_PPRO_CHECKSUM=y CONFIG_HPET_EMULATE_RTC=y CONFIG_NR_CPUS=8 CONFIG_X86_MCE_NONFATAL=y CONFIG_X86_MCE_P4THERMAL=y CONFIG_MICROCODE=m CONFIG_X86_MSR=m CONFIG_X86_CPUID=m None of that seems like it would would make a difference, except perhaps the processor identification. If you don't tell the kernel what type of processor it's using (i.e. by just leaving it generic) it won't know to enable hyperthreading..... HTH - -- gentux echo "hfouvyAdpy/ofu" | perl -pe 's/(.)/chr(ord($1)-1)/ge' gentux's gpg fingerprint ==> 34CE 2E97 40C7 EF6E EC40 9795 2D81 924A 6996 0993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFDRVAWLYGSSmmWCZMRAkMNAJ4kqHMKAV5CToOOlrtelwauf96uNwCeJ8jO WyGGXrJh9iI+U8+1MKz3Na8= =OLZ/ -----END PGP SIGNATURE----- -- gentoo-user@gentoo.org mailing list
