The TSC-s are checked and synchronized only if they were good originally. That is, invariant, synchronized, etc. This is necessary on an AMD-based system where after a wakeup from STR I see that BSP clock differs from AP clocks by a count that roughly corresponds to one second. The APs are in sync with each other. Not sure if this is a hardware quirk or a firmware bug. This is what I see after a resume with this change: SMP: passed TSC synchronization test after adjustment acpi_timer0: restoring timecounter, ACPI-fast -> TSC-low Reviewed by: kib MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D15551 |
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acpica | ||
bios | ||
cpufreq | ||
include | ||
iommu | ||
isa | ||
pci | ||
x86 | ||
xen |