[PATCH 00/10] Account page tables at all levels

[Dave Hansen]

On 12/19/24 08:44, Kevin Brodsky wrote:
>   +---------------+-------------------------+-----------------------+--------------+------------------------------------+
>   | x86           | Y                       | Y                     | Y/N          | kmem_cache at pgd level if PAE     |
>   +---------------+-------------------------+-----------------------+--------------+------------------------------------+

This is a really rare series that adds functionality _and_ removes code
overall. It looks really good to me. The x86 implementation seems to be
captured just fine in the generic one:

Acked-by: Dave Hansen <dave.hansen at linux.intel.com>

One super tiny nit is that the PAE pgd _can_ be allocated using
__get_free_pages(). It was originally there for Xen, but I think it's
being used for PTI only at this point and the comments are wrong-ish.

I kinda think we should just get rid of the 32-bit kmem_cache entirely.