Partially revert r219672. After r198295, kernel need to seed randomness as
soon as possible for stack protector. However, dummy timecounter does not have enough entropy and we don't need to sacrifice Pentium class and later. Pointed out by: Maxim Dounin (mdounin at mdounin dot ru)
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=219679
@ -69,10 +69,14 @@ void swi_vm(void *);
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static __inline uint64_t
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get_cyclecount(void)
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{
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#if defined(I486_CPU) || defined(KLD_MODULE)
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struct bintime bt;
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binuptime(&bt);
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return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
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#else
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return (rdtsc());
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#endif
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}
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#endif
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