snp-guest-req-v1b

KVM: SEV: Add certificate support for SNP_EXTENDED_GUEST_REQUEST events

Currently KVM implements a stub version of SNP Extended Guest Requests
that always supplies NULL certificate data alongside the attestation
report. Make use of the newly-defined KVM_EXIT_COCO_REQ_CERTS event to
provide a way for userspace to optionally supply this certificate data.

This implements the actual handling for KVM_EXIT_COCO_REQ_CERTS, so
allow it to be enabled via KVM_CAP_EXIT_COCO.

Signed-off-by: Michael Roth <michael.roth@amd.com>

v10 based kernel

KVM: SVM: fix: Don't return an error for `GHCB_MSR_PSC_REQ`

AFAICT there's no reason to return an error here.

I've asked this on the mailing list:
https://lore.kernel.org/lkml/Y77J7C2E9Xd1QcmZ@notebook/

Signed-off-by: Tom Dohrmann <erbse.13@gmx.de>

v10-b

This release adds a patch to allocate the RMP table in Linux.