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Re: [Libvir] RFC PATCH - Initial NodeGetCellsFreeMemory patch



Daniel Veillard wrote:
+ * If maxCells == -1, the free memory will be summed across all cells and
+ * returned in freeMems[0].

Hum, that -1 handling is a bit surprizing, but apparently that's what the Xen hypercall does. It's a bit convoluted as an API to get the full
free memory on a Node, maybe this should be separated as a different API
as people looking for this information may not think about looking at NUMA special entry points. We don't have currently a simple API to
get the free memory on a Node, maybe that should be added.

Having the separate semantics is necessary because it seems like this can be done in a single hypercall if the caller only needs to know the total free memory.

Rich.

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