Jiri Pirko d7a40b5194 RDMA/uverbs: Expose CoCo DMA bounce requirement to userspace ... In CoCo guests, guest memory is encrypted and untrusted (T=0) devices cannot DMA to it directly; such transfers must go through unencrypted bounce buffers. RDMA registers user pages for direct device access, bypassing the DMA layer and thus any bouncing, so registered memory does not work in this configuration. Until trusted (T=1) device detection is available, conservatively flag every device attached to a CoCo guest. Expose the condition to userspace as IB_UVERBS_DEVICE_CC_DMA_BOUNCE in device_cap_flags_ex so applications can avoid memory registration and fall back to copying buffers through send/recv. Link: https://patch.msgid.link/r/20260517141311.2409230-2-jiri@resnulli.us Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>		2026-05-29 20:27:29 -03:00
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hfi
bnxt_re-abi.h	RDMA/bnxt_re: Enable app allocated QPs	2026-05-24 12:32:21 -03:00
cxgb4-abi.h
efa-abi.h	RDMA/efa: Rename alloc_ucontext comp_mask to supported_caps	2026-03-17 07:04:03 -04:00
erdma-abi.h
hns-abi.h
ib_user_ioctl_cmds.h	RDMA/uverbs: Use UMEM attributes for QP creation	2026-05-29 20:19:59 -03:00
ib_user_ioctl_verbs.h	RDMA/core: Introduce generic buffer descriptor infrastructure for umem	2026-05-29 20:19:57 -03:00
ib_user_mad.h
ib_user_sa.h
ib_user_verbs.h	RDMA/uverbs: Expose CoCo DMA bounce requirement to userspace	2026-05-29 20:27:29 -03:00
ionic-abi.h
irdma-abi.h
mana-abi.h
mlx4-abi.h
mlx5_user_ioctl_cmds.h	RDMA/mlx5: Use UMEM attribute for QP doorbell record	2026-05-29 20:20:00 -03:00
mlx5_user_ioctl_verbs.h	RDMA/mlx5: Add support for TLP VAR allocation	2026-03-05 05:42:01 -05:00
mlx5-abi.h
mthca-abi.h
ocrdma-abi.h
qedr-abi.h
rdma_netlink.h	RDMA/nldev: Expose kernel-internal FRMR pools in netlink	2026-03-05 05:41:02 -05:00
rdma_user_cm.h
rdma_user_ioctl_cmds.h
rdma_user_ioctl.h
rdma_user_rxe.h
rvt-abi.h
siw-abi.h
vmw_pvrdma-abi.h