Re: [Qemu-devel] [PATCH] Rename target_phys_addr_t to Phys

[Anthony Liguori]

On 01/04/2012 01:50 PM, Peter Maydell wrote:
> On 4 January 2012 19:32, Avi Kivity<address@hidden>  wrote:
> > The name 'Phys' conveys exactly the same information as 'target_phys_addr_t':
> >
> >   - it has to be a physical address (no such thing as physical data)
> >   - it has to be a target address (qemu doesn't do host physical addresses)
> >   - the fact that it's a type is implied by the naming convention
> >
> > As it's 4 characters vs. 18, and C standard compliant to boot, Phys is a
> > clear winner.  Rename all instances of target_phys_addr_t to the new name.
> > All hail Phys!
> >
> >   323 files changed, 1959 insertions(+), 1959 deletions(-)
>
> Seems like gratuitous churn to me...

Agreed.  I don't really like using CamelCase for scalar values either.

target_phys_addr_t should exist IMHO in the device model code.  I think it would 
be more useful to introduce a hw_addr, fix it at u64, make the device model and 
memory API use that, and then make it so we didn't do the silliness around 
libhw32/libhw64.

I think the only reason we don't fix target_phys_addr_t at u64 is because of 
sensitivity around the TLB softmmu, right?  A hw_addr for hw/*.c should be a 
reasonable compromise.

Making the build faster (by killing libhw32/libhw64) would be a good 
justification for this type of change IMHO.

Regards,

Anthony Liguori

> -- PMM