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Idle page zeroing has been disabled by default on all architectures since r170816 and has some bugs that make it seemingly unusable. Specifically, the idle-priority pagezero thread exacerbates contention for the free page lock, and yields the CPU without releasing it in non-preemptive kernels. The pagezero thread also does not behave correctly when superpage reservations are enabled: its target is a function of v_free_count, which includes reserved-but-free pages, but it is only able to zero pages belonging to the physical memory allocator. Reviewed by: alc, imp, kib Differential Revision: https://reviews.freebsd.org/D7714 |
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| .. | ||
| aim_machdep.c | ||
| locore.S | ||
| locore32.S | ||
| locore64.S | ||
| mmu_oea.c | ||
| mmu_oea64.c | ||
| mmu_oea64.h | ||
| moea64_if.m | ||
| moea64_native.c | ||
| mp_cpudep.c | ||
| slb.c | ||
| trap_subr32.S | ||
| trap_subr64.S | ||