Change in coreboot[master]: cpu/x86/lapic: Fix choice X2APIC_ONLY - coreboot-gerrit

5 Jan 2022


      Attention is currently required from: Nico Huber, Wonkyu Kim, Angel Pons, Kyösti Mälkki.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60213 )
Change subject: cpu/x86/lapic: Fix choice X2APIC_ONLY
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Patch Set 3:
(1 comment)
Commit Message:
https://review.coreboot.org/c/coreboot/+/60213/comment/267a980f_67236fc7 
PS2, Line 11: avoid entering a printk() and acquiring console_lock and
            : dead-locking.
...
Ah, Linux has code for this: https://github. […]
`mfence; lfence`
sounds legit I guess?
mfence is not serializing, and lfence is mostly serializing, but cpuid is fully serializing, even with respect to fetches
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Gerrit-Project: coreboot
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Gerrit-Change-Id: I78070ae91e78c11c3e3aa225e5673d4667d6f7bb
Gerrit-Change-Number: 60213
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