Re: [PATCH v3 12/16] x86/virt/tdx: Add helpers to allow for pre-allocating pages

Edgecombe, Rick P
2025-09-26T15:49:39Z

On Fri, 2025-09-26 at 08:19 -0700, Dave Hansen wrote:
> On 9/18/25 16:22, Rick Edgecombe wrote:
> > +/*
> > + * Simple structure for pre-allocating Dynamic
> > + * PAMT pages outside of locks.
> > + */
> > +struct tdx_prealloc {
> > + struct list_head page_list;
> > + int cnt;
> > +};
>
> This is compact and all. But it's really just an open-coded,
> simplified version of what mempool_t plus mempool_init_page_pool()
> would do.
>
> Could you take a look at that and double check that it's not a good
> fit here, please?

Yes! I searched and was surprised there wasn't something like this. I
will give this one a try.