On Tue, Nov 15, 2016 at 10:55:49AM +0100, Juergen Gross wrote: > I'd go with the new error code. What about E2BIG or ENOSPC? > > I think the hypervisor should fill in the number of entries required > in this case. > > In case nobody objects I can post patches for this purpose (both Xen > and Linux).
This sounds like a good solution to me. I think it's definitely more appropriate than simply bumping up the size of xen_e820_map, especially considering the fact that it's theoretically possible for the e820 map generated by the hypercall to grow too large, even on a non-EFI machine, where my change would have no effect. Thanks for your input! - Alex
