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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] libxl: Use -vcpu_avail with qemu-xen.
On 03/06/13 09:37, Ian Campbell wrote: > On Fri, 2013-05-31 at 17:39 +0100, Anthony PERARD wrote: >> > This require the series CPU hotplug for qemu-xen. >> > >> > Note: this patch is valid only for 4.3 as the -vcpu_avail will >> > probably not be upstream to Qemu. > Ugh. So how are we going to handle this in the future? libxl ideally > needs to work with upstream qemu or our qemu seamlessly, which would > mean needed to know whether to use -vcpu_avail vs. whatever upstream > has. I'd much prefer to make our qemu export the same interface and use > that... It could maybe be removed all together. QEMU already know how many initial CPUs there is. The only difference is the bitmap. -vcpu_avail is giving to QEMU a bitmap of the running CPUs. But I don't know if it useful to have a bitmap, or if a number is enough. With QEMU upstream, we could actually pass the bitmap through several QMP command "cpu-add CPUx", if a number is not enough. -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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