Messages in this thread | | | Date | Fri, 4 Sep 2015 17:54:48 +0200 | From | Peter Zijlstra <> | Subject | Re: [4.2, Regression] Queued spinlocks cause major XFS performance regression |
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On Fri, Sep 04, 2015 at 05:30:35PM +0200, Peter Zijlstra wrote: > Should I place the virt_spin_lock() thing under CONFIG_PARAVIRT (maybe > even _SPINLOCKS) such that only paravirt enabled kernels when ran on a > hypervisor that does not support paravirt patching (HyperV, VMware, > etc..) revert to the test-and-set?
Ah, CONFIG_HYPERVISOR_GUEST seems fitting, that's a prerequisite for all the PARAVIRT options too.
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