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pvclock: Add vDSO support
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Authored by adam_fenn.io on Aug 5 2021, 2:29 AM.
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adam_fenn.io held this revision as a draft.
sys/x86/x86/pvclock.c
174

Should it (formally) be atomic_cmpset_rel_64?

177

Could this be written more simply as:

ret = now;
if ((flags & PVCLOCK_FLAG_TSC_STABLE) == 0) {
    last = atomic_load_acq_64(&pvclock_last_systime);
    do {
        if (last > now) {
            ret = last;
            break;
        }
    } while (!atomic_fcmpset_64(&pvclock_last_systime, &last, now);
}

?

This revision was not accepted when it landed; it landed in state Needs Review.Aug 14 2021, 12:59 PM
Closed by commit rG0b3382b863f3: pvclock: Add 'struct pvclock' API (authored by adam_fenn.io, committed by kib). · Explain Why
This revision was automatically updated to reflect the committed changes.