[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] How does the Xen kernel change the vcpu number of a domain?
On Fri, Jun 13, 2014 at 03:19:08PM +0800, Bei Guan wrote: > Hi All, > > I try to figure out that how the command "xl vcpu-set" works. I find out > that the command "xl vcpu-set" calls the method > libxl__set_vcpuonline_xenstore() to set the state of the vcpu in the > Xenstore path /local/domain_id/cpu/vcpu_id/availability. The value of the > key "availability" is set to "online" while the the vcpu number will > increase. When the key is set to "offline" the vcpu number will decrease. > > What I want to know is how does the vcpu number increase/decrease according > to the vcpu state in the Xenstore? How can I find the method that really > does the work? > Linux kernel code drivers/xen/cpu_hotplug.c. It sets up a xenstore watch for "cpu" xenstore node and handles event accordingly. Wei. > Any reply is appreciated. Thank you all very much. > > -- > Best Regards, > Bei Guan > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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