Re: [RFC PATCH v4 06/19] hw/arm: Filter machine types for qemu-system-arm/aarch64 binaries

[Pierrick Bouvier]

On 4/23/25 12:53, Philippe Mathieu-Daudé wrote:
> On 23/4/25 21:33, Pierrick Bouvier wrote:
> > On 4/23/25 12:12, Richard Henderson wrote:
> > > > @Richard:
> > > > Is it a concern regarding code maintenance, or potential impact
> > > > on .data?
> > >
> > > I was thinking of impact on .data, especially with so many.
> >
> > du qemu-system-aarch64 optimized and stripped (in kB):
> > 31880    upstream
> > 31896    upstream + this series
>
> FYI same tag as a branch with InterfaceInfo constified:
> https://gitlab.com/philmd/qemu/-/tree/single-binary-hw-arm-rfc-v4-const

Maybe I missed something, but machine interfaces are not const on this 
branch.

> > So we have +16kB which is a size increase of +0.0005%.
> > Even if we project something similar on other architectures (let's say
> > x10), the final impact on binary size should be < 0.005%.
> >
> > Maybe it's a reasonable impact considering the trade off on coherency
> > and readability through the codebase?
> > Else, in case we make this array const, can we expect the linker to
> > deduplicate it? I'm not familiar with how final .data section is assembled.