On Mon, Jan 08, 2024 at 05:49:01PM +0100, Jeremi Piotrowski wrote:
> What I wrote: "allow for the kernel to allocate the rmptable".
What?!
"15.36.5 Hypervisor RMP Management
...
Because the RMP is initialized by the AMD-SP to prevent direct access to
the RMP, the hypervisor must use the RMPUPDATE instruction to alter the
entries of the RMP. RMPUPDATE allows the hypervisor to alter the
Guest_Physical_Address, Assigned, Page_Size, Immutable, and ASID fields
of an RMP entry."
What you want is something that you should keep far and away from the
upstream kernel.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
