Re: [PATCH RFC 2/5] s390x: implement diag260

[Heiko Carstens]

On Fri, Jul 10, 2020 at 02:12:33PM +0200, David Hildenbrand wrote:
> > Note: Reading about diag260 subcode 0xc, we could modify Linux to query
> > the maximum possible pfn via diag260 0xc. Then, we maybe could avoid
> > indicating maxram size via SCLP, and keep diag260-unaware OSs keep
> > working as before. Thoughts?
> 
> Implemented it, seems to work fine.

The returned value would not include standby/reserved memory within
z/VM. So this seems not to work.
Also: why do you want to change this?