On platforms which supports x2APIC, the patches enable this enhancement
The x2APIC specification is available at
apicid_u8_2_u32.patch: changes the 'apicid' from u8 to u32;
x2apic.patch: replaces the traditional MMIO-style interface to the
MSR-style one; uses physical fixed mode to deliver interrupts to CPU0.
Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>
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