7f7f6f85a1
Avoid using DELAY() since it can try to use spin locks on CPUs without a P-state invariant TSC. For cpu_lock_delay(), always use the TSC if it exists (even if it is not P-state invariant) to delay for a microsecond. If the TSC does not exist, read from I/O port 0x84 to delay instead. PR: 228768 Reported by: Roger Hammerstein <cheeky.m@live.com> Reviewed by: kib MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17851 |
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acpica | ||
bios | ||
cloudabi32 | ||
conf | ||
i386 | ||
ibcs2 | ||
include | ||
linux | ||
pci | ||
Makefile |