On Wed, Jul 01, 2026 at 11:19:12AM +0530, Aneesh Kumar K.V (Arm) wrote: > arm64 Realms, powerpc secure guests and s390 protected virtualization > guests currently report CC_ATTR_MEM_ENCRYPT, but not > CC_ATTR_GUEST_MEM_ENCRYPT. > > These environments are all secure guest configurations. Their > force_dma_unencrypted() implementations also treat the same secure guest > state as requiring unencrypted DMA. Report CC_ATTR_GUEST_MEM_ENCRYPT for > the same condition so generic confidential-computing code can distinguish > guest memory encryption from host memory encryption instead of relying only > on CC_ATTR_MEM_ENCRYPT. > > Signed-off-by: Aneesh Kumar K.V (Arm) <[email protected]>
For arm64: Acked-by: Catalin Marinas <[email protected]>
