Nouveau - Oct 2025 - [PATCH v3 2/2] gpu: nova-core: add boot42 support for next-gen GPUs

On Wed, 2025-10-29 at 17:35 -0700, John Hubbard wrote:
> ??????? // "Future" GPUs (some time after Rubin) will set
`architecture_0`
> ??????? // to 0, and `architecture_1` to 1, and put the architecture
details in
> ??????? // boot42 instead.
I don't want to kick a dead horse here, but aren't the architecture
details already in boot42
for Turing?  I thought the whole point was that we don't need boot0 any
more, and only Nouveau
has to worry about boot0 vs boot42.

On 10/29/25 6:01 PM, Timur Tabi wrote:
> On Wed, 2025-10-29 at 17:35 -0700, John Hubbard wrote:
>>  ??????? // "Future" GPUs (some time after Rubin) will set
`architecture_0`
>>  ??????? // to 0, and `architecture_1` to 1, and put the architecture
details in
>>  ??????? // boot42 instead.
> 
> I don't want to kick a dead horse here, but aren't the architecture
details already in boot42
> for Turing?  I thought the whole point was that we don't need boot0 any
more, and only Nouveau
> has to worry about boot0 vs boot42.
Yes, but someone can still plug in a pre-Turing GPU and try to
boot up with nova-core.ko on the system.

So it's important to avoid getting into trouble in that case.

thanks,
John Hubbard