Re: [PATCH 2/2] Add -mem-shared option

[Paolo Bonzini <pbonzini@redhat.com>]

On 29/11/19 13:16, Igor Mammedov wrote:
> As for "-m", I'd make it just an alias that translates
>  -m/mem-path/mem-prealloc

I think we should just deprecate -mem-path/-mem-prealloc in 5.0.  CCing
Thomas as mister deprecation. :)

> combination to appropriate '-object' for '-machine memdev' consumption.
> That should cover compat purposes for old machines and the rest of
> -m options (maxmem/slots) would be aliased to appropriate machine options.
> 
> That will allow us to get rid of ad-hoc '-m' parser. After that it would
> be possible to deprecate '-m' in favor of machine properties, but that
> probably will get quite a push back so unless I find compelling reason
> to do it I won't care much as '-m' would be a lightweight shim over
> machine properties.

Well, deprecation and ultimately removal is always a long path.
However, I understand your plan better now and having "-machine memdev"
makes sense if you want to also move/alias "-m maxmem"/"-m slots" from
"-m" to "-machine".

So ultimately you'd have two ways of configuring memory:

- -m N,maxmem=P,slots=Q
" -machine memdev=M,maxmem=P,slots=Q

Paolo