Re: [PATCH 1/4] gpu: nova-core: gsp: fix incorrect advancing of write pointer

[Eliot Courtney]

On Sat Jan 24, 2026 at 3:28 AM JST, Gary Guo wrote:
>> -        let wptr = self.cpu_write_ptr().wrapping_add(elem_count) & MSGQ_NUM_PAGES;
>> +        let wptr = self.cpu_write_ptr().wrapping_add(elem_count) % MSGQ_NUM_PAGES;
>
> So the actual number of pages is indeed 0x3F, not 0x40? That's interesting...

Yes, that's right. I thought it was weird as well, but the reason is
that the first page stores the rx/tx pointers (see `Msgq`) and the
remaining 63 are used for the actual ring buffer.