Some VM systems announce the frequency of the local APIC via the
CPUID leaf 0x40000010. Using this allows us to boot slightly
faster by avoiding the need for timer calibration.
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Differential D33895
Use CPUID leaf 0x40000010 for local APIC freq cperciva on Jan 14 2022, 6:32 AM. Authored by Tags None Referenced Files
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Some VM systems announce the frequency of the local APIC via the Sponsored by: https://www.patreon.com/cperciva
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Comment Actions Committed. (I forgot to include the Differential Revision tag in the commit message.) |