Re: [PATCH v2 02/10] gpu: nova-core: Create initial Gsp

[Lyude Paul <lyude@redhat.com>]

On Wed, 2025-09-24 at 13:50 -0700, John Hubbard wrote:
> On 9/24/25 1:13 PM, Lyude Paul wrote:
> > Some comments down below
> ...
> > > +/// Creates a self-mapping page table for `obj` at its beginning.
> > > +fn create_pte_array(obj: &mut CoherentAllocation<u8>) {
> > > +    let num_pages = obj.size().div_ceil(GSP_PAGE_SIZE);
> > 
> > Unfortunately there's a bit of a gotcha here - we can't actually use functions
> > like div_ceil as-is, because a number of 32 bit architectures do not support
> > u64 / u64 natively. The problem is we don't have __aeabi_uldivmod implemented
> 
> I recall that we agreed that nova will depend upon CONFIG_64BIT.
> 
> Does that make this point N/A?

Oh! I apologize, I must have actually missed that memo :). If we're defending
on CONFIG_64BIT then that should be fine:

Reviewed-by: Lyude Paul <lyude@redhat.com>

> 
> 
> thanks,

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat

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