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CONFIG_PARAVIRT_SPINLOCKS: Paravirtualization layer for spinlocks

General informations

The Linux kernel configuration item CONFIG_PARAVIRT_SPINLOCKS:

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Paravirtualized spinlocks allow a pvops backend to replace the spinlock implementation with something virtualization-friendly (for example, block the virtual CPU rather than spinning).

It has a minimal impact on native kernels and gives a nice performance benefit on paravirtualized KVM / Xen kernels.

If you are unsure how to answer this question, answer Y.



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