Gentoo Archives: gentoo-user

From: "Johnson
To: gentoo-user@l.g.o, gentoo-user@l.g.o
Subject: RE: [gentoo-user] Gentoo-sources 2.6.16-r7 and Hyperthreading => not working ?
Date: Tue, 16 May 2006 16:56:36
Message-Id: F86FFCF83FF9DE4096F0C9C094CAA36801747A5C@NAEAMILLEX05VA.nadsusea.nads.navy.mil
1 You need to enable:
2
3 CONFIG_X86_LOCAL_APIC=y
4
5
6
7 -----Original Message-----
8 From: Mike Myers [mailto:fluffymikey@×××××.com]
9 Sent: Tue 5/16/2006 12:14 PM
10 To: gentoo-user@l.g.o
11 Subject: Re: [gentoo-user] Gentoo-sources 2.6.16-r7 and Hyperthreading => not working ?
12
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15
16 Hi
17
18 If I remember correctly, I think you also need to make sure you have
19 ACPI enabled in the kernel too.
20
21 Xavier MOGHRABI wrote:
22 > Dear Gentoo Users and Dev,
23 >
24 > I've just installed on my desktop the last gentoo-sources package ( in portage
25 > (2.6.16-r7). It seems that the hyperthreading is unvailable since when I do :
26 > 'cat /proc/cpuinfo', I can just see a single computer.
27 >
28 > That is really strange since I was using the previous package
29 > (gentoo-sources-2.6.16-r6) with hyperthreading feature enabled.
30 >
31 > To build my kernel, I use genkernel (with --menuconfig option). I keep the
32 > same configuration as the one for gentoo-sources-2.6.16-r6, that I loaded.
33 >
34 > In my '.config' file, I have the following options, that as I know should make
35 > hyperthreading available. :
36 > CONFIG_MPENTIUM4=y
37 > and
38 > CONFIG_SMP=y
39 > CONFIG_NR_CPUS=2
40 > CONFIG_SCHED_SMT=y
41 >
42 > My CPU is a single Pentium 4 3.2GHz with HT. Hereunder is the result
43 > of 'cat /proc/cpuinfo' with the previous kernel:
44 > processor : 0
45 > vendor_id : GenuineIntel
46 > cpu family : 15
47 > model : 3
48 > model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
49 > stepping : 4
50 > cpu MHz : 3192.178
51 > cache size : 1024 KB
52 > physical id : 0
53 > siblings : 2
54 > core id : 0
55 > cpu cores : 1
56 > fdiv_bug : no
57 > hlt_bug : no
58 > f00f_bug : no
59 > coma_bug : no
60 > fpu : yes
61 > fpu_exception : yes
62 > cpuid level : 5
63 > wp : yes
64 > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
65 > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
66 > pni monitor ds_cpl cid xtpr
67 > bogomips : 6391.31
68 >
69 > processor : 1
70 > vendor_id : GenuineIntel
71 > cpu family : 15
72 > model : 3
73 > model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
74 > stepping : 4
75 > cpu MHz : 3192.178
76 > cache size : 1024 KB
77 > physical id : 0
78 > siblings : 2
79 > core id : 0
80 > cpu cores : 1
81 > fdiv_bug : no
82 > hlt_bug : no
83 > f00f_bug : no
84 > coma_bug : no
85 > fpu : yes
86 > fpu_exception : yes
87 > cpuid level : 5
88 > wp : yes
89 > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
90 > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
91 > pni monitor ds_cpl cid xtpr
92 > bogomips : 6384.19
93 >
94 > Does somebody know what is wrong in my case ?
95 >
96 > Thanks for your answer !
97 >
98
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