KVM: nSVM: Sanitize INT/EVENTINJ fields when copying from vmcb12

Make sure all fields used from vmcb12 in creating the vmcb02 are
sanitized, such that no unhandled or reserved bits end up in the vmcb02.

The following control fields are read from vmcb12 and have bits that are
either reserved or not handled/advertised by KVM: tlb_ctl, int_ctl,
int_state, int_vector, event_inj, misc_ctl, and misc_ctl2.

The following fields do not require any extra sanitizing:
- tlb_ctl: already being sanitized.
- int_ctl: bits from vmcb12 are copied bit-by-bit as needed.
- misc_ctl: only used in consistency checks (particularly NP_ENABLE).
- misc_ctl2: bits from vmcb12 are copied bit-by-bit as needed.

For the remaining fields (int_vector, int_state, and event_inj), make
sure only defined bits are copied from L1's vmcb12 into KVM'cache by
defining appropriate masks where needed.

Suggested-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Yosry Ahmed <yosry@kernel.org>
Link: https://patch.msgid.link/20260303003421.2185681-25-yosry@kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>

0 files changed, 0 insertions, 0 deletions