Re: [PATCH] qemu: add support for max-ram-below-4g option

On Sun, Apr 25, 2021 at 17:33:31 +0800, Zhiyong Ye wrote: > Limit the amount of ram below 4G. This can increase the address space > used by PCI devices below 4G and it can be used by adding attributes in > XML like this: > <domain> > ... > <memory unit="MiB" below4g="2048">4096</memory> This illustrates that sharing the 'unit' argument between 'below4g' and the actual memory size is wrong (pointed out also below). In case the user modifies the unit but doesn't change below4g value it may be misrepresented and since below4g is new some tools might not actually know how to handle that. below4g must either be by default in kiB, or have an own unit (which will probably be ugly).