xen/spinlock: Document the xen_nopvspin parameter.
Which disables in the ticketlock slowpath the Xen PV optimization's. Useful for diagnosing issues and comparing benchmarks in over-commit CPU scenarios. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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@ -3412,6 +3412,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
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the unplug protocol
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never -- do not unplug even if version check succeeds
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xen_nopvspin [X86,XEN]
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Disables the ticketlock slowpath using Xen PV
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optimizations.
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xirc2ps_cs= [NET,PCMCIA]
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Format:
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<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
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