Re: [Qemu-devel] [PATCH 4/6] target/arm: Add "-cpu max" support

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 2 Feb 2018 17:54:43 +0000
Peter Maydell <peter.maydell@linaro.org> wrote:

> On 26 January 2018 at 15:44, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> > On 01/26/2018 11:33 AM, Peter Maydell wrote:  
> >> On 26 January 2018 at 14:29, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:  
> >>> Why not use arm_any_initfn() here?  
> >>
> >> That function (and the 'any' cpu) are deliberately only
> >> included in the linux-user binaries, not the system-emulation binaries.  
> >
> > why not use the V8 features?  
> 
> What v8 features?
> 
> >> (Also arm_any_initfn() only initializes userspace-visible stuff, it
> >> doesn't provide ID register values etc for kernel-visible things.)  
> >
> > I'd still use an unique arm_max_initfn() such
> >
> >   // initializes userspace-visible stuff
> > #ifndef CONFIG_USER_ONLY
> >   // initializes kernel-visible things
> > #endif  
> 
> >>> Actually what seems cleaner is to move "any" features here, and kill the
> >>> "any" cpu, using "max" for this purpose.  
> >>
> >> We can't kill 'any', that would break back-compatibility
> >> of command lines.  
> >
> > and use an alias for 'any' -> 'max' or just
I'd suggest to place easy any -> max compat hack into
arm_cpu_class_by_name()

> >
> >   { .name = "any", .initfn = arm_max_initfn }, /* backward compat */  
> 
> Yes, we could probably do something similar to this.
> 
> thanks
> -- PMM
>