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Kernel: Add x2APIC support

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This allows addressing all cores on more modern processors. For now,
we still have a hardcoded limit of 64 due to s_processors being a
static array.
This commit is contained in:
Tom 2021-09-03 21:27:57 -06:00 • committed by Andreas Kling
parent 123087e235
commit 8a258edfd6
5 changed files with 108 additions and 48 deletions
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9
Kernel/ACPI/Definitions.h
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@ -277,6 +277,15 @@ struct [[gnu::packed]] ProcessorLocalAPIC {
u32 flags;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#processor-local-x2apic-structure
struct [[gnu::packed]] ProcessorLocalX2APIC {
MADTEntryHeader h;
u16 reserved;
u32 apic_id;
u32 flags;
u32 acpi_processor_id;
};
// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#interrupt-source-override-structure
struct [[gnu::packed]] InterruptSourceOverride {
MADTEntryHeader h;