Re: [Qemu-devel] [RFC] memory: use memory_region_init_ram() instead of memory_region_allocate_system_memory()

[Paolo Bonzini]

On 15/02/19 12:33, Igor Mammedov wrote:
> On Thu, 14 Feb 2019 19:11:27 +0100
> Paolo Bonzini <address@hidden> wrote:
> 
>> On 14/02/19 15:07, Igor Mammedov wrote:
>>> Also some boards (ab)use memory_region_allocate_system_memory(), calling it 
>>> several
>>> times to allocate various fixed sized chunks of RAM and ROMs, which is 
>>> problematic
>>> to map to a single initial RAM Machine::memdev backend and is currently 
>>> broken if
>>> -mem-path points to a not hugepage pool.
>>
>> This is certainly a good idea.  However, I'm not sure why you would need
>> a memdev property on the Machine instead of just allowing 1 -numa node,
>> which is what really is.
> 
> using '-numa node' would be confusing to user when he/she is not interested 
> in numa usecase
> it also would enable numa fdt/acpi parts generated automatically (fixable but 
> then again
> it adds more to confusion) and in the end there are boards that do not 
> support numa at all
> (s390x).

Fair enough.

What about -m, too?  Then you'd specify a memdev instead of the initial
memory size.

Paolo