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x86: cpu/common*.c, merge detect_ht()
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Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored and Ingo Molnar committed Sep 5, 2008
1 parent 140fc72 commit 1cd7877
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Showing 2 changed files with 21 additions and 1 deletion.
13 changes: 12 additions & 1 deletion arch/x86/kernel/cpu/common.c
Original file line number Diff line number Diff line change
Expand Up @@ -330,6 +330,9 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
if (cpu_has(c, X86_FEATURE_CMP_LEGACY))
goto out;

if (cpu_has(c, X86_FEATURE_XTOPOLOGY))
return;

cpuid(1, &eax, &ebx, &ecx, &edx);

smp_num_siblings = (ebx & 0xff0000) >> 16;
Expand All @@ -346,17 +349,25 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
}

index_msb = get_count_order(smp_num_siblings);
#ifdef CONFIG_X86_64
c->phys_proc_id = phys_pkg_id(index_msb);
#else
c->phys_proc_id = phys_pkg_id(c->initial_apicid, index_msb);

#endif

smp_num_siblings = smp_num_siblings / c->x86_max_cores;

index_msb = get_count_order(smp_num_siblings);

core_bits = get_count_order(c->x86_max_cores);

#ifdef CONFIG_X86_64
c->cpu_core_id = phys_pkg_id(index_msb) &
((1 << core_bits) - 1);
#else
c->cpu_core_id = phys_pkg_id(c->initial_apicid, index_msb) &
((1 << core_bits) - 1);
#endif
}

out:
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9 changes: 9 additions & 0 deletions arch/x86/kernel/cpu/common_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -349,16 +349,25 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
}

index_msb = get_count_order(smp_num_siblings);
#ifdef CONFIG_X86_64
c->phys_proc_id = phys_pkg_id(index_msb);
#else
c->phys_proc_id = phys_pkg_id(c->initial_apicid, index_msb);
#endif

smp_num_siblings = smp_num_siblings / c->x86_max_cores;

index_msb = get_count_order(smp_num_siblings);

core_bits = get_count_order(c->x86_max_cores);

#ifdef CONFIG_X86_64
c->cpu_core_id = phys_pkg_id(index_msb) &
((1 << core_bits) - 1);
#else
c->cpu_core_id = phys_pkg_id(c->initial_apicid, index_msb) &
((1 << core_bits) - 1);
#endif
}

out:
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