Re: [RFC PATCH] xen/x86: Increase xen_e820_map to E820_X_MAX possible entries

[Alex Thorlton]

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