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in the mptable. The way this works is that we determine if the system has hyperthreading and how many logical CPU's should be in each physical CPU by using the information returned by cpuid. During the first pass of the mptable, we build a bitmask of the APIC IDs of the CPUs listed in the mptable. We then scan that bitmask to see if the CPUs are already listed by the mptable, or if there are any APIC IDs already in use that would conflict with the APIC IDs of the logical CPUs. If that test succeeds, then we fixup the count of application processors. Later on during the second pass of the mptable we create fake processor entries for logical CPUs and add them to the system. We only need this type of fixup hack when using the mptable to enumerate CPUs. The ACPI MADT table properly enumerates all logical CPUs. |
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| .. | ||
| acpica | ||
| apm | ||
| bios | ||
| compile | ||
| conf | ||
| i386 | ||
| ibcs2 | ||
| include | ||
| isa | ||
| linux | ||
| pci | ||
| svr4 | ||
| Makefile | ||