Nit, please use "KVM: x86:" for the shortlogs.  And ubernit, the "new" part is
redundant and/or misleading, e.g. implies that more error code bits are being
added to existing SNP/RMP checks.  E.g.

  KVM: x86: Define RMP page fault error code bits for #NPT

On Wed, Jul 07, 2021, Brijesh Singh wrote:

When SEV-SNP is enabled globally, the hardware places restrictions on all
memory accesses based on the RMP entry, whether the hyperviso or a VM,

Another typo.

performs the accesses. When hardware encounters an RMP access violation
during a guest access, it will cause a #VMEXIT(NPF).