From 93de2a6a4b91b72607136dd656edf03fb399d27f Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 23 Sep 2026 09:37:21 -0700 Subject: KVM: SEV: Do cache maintenance on the source VM during intra-host migration Manually perform cache maintenance on the source VM during intra-host migration to ensure no stale data is left in CPU caches after the VM is destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's memory reclaim flows won't trigger cache maintenance, e.g. when all guest memory is reclaimed in response to detaching from the mmu_notifier. Note, relying on the destination VM to do cache maintenance isn't an option as KVM doesn't require identical guest memory configurations, i.e. the source VM may have access to memory that the destination VM does not. Enforcing equivalent memory configurations is infeasible, as it would require a *deep* comparison of memslots, e.g. to verify that not only are the memslot identical, but what the memslots point at is also identical. Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration") Cc: stable@vger.kernel.org Reported-by: Stefan Teodorescu Signed-off-by: Sean Christopherson Message-ID: <20260923163721.1584779-3-seanjc@google.com> Signed-off-by: Paolo Bonzini --- Documentation/driver-api/infiniband.rst | 109 ++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 Documentation/driver-api/infiniband.rst (limited to 'Documentation/driver-api/infiniband.rst') diff --git a/Documentation/driver-api/infiniband.rst b/Documentation/driver-api/infiniband.rst new file mode 100644 index 000000000..d48f24677 --- /dev/null +++ b/Documentation/driver-api/infiniband.rst @@ -0,0 +1,109 @@ +=========================================== +InfiniBand and Remote DMA (RDMA) Interfaces +=========================================== + +Introduction and Overview +========================= + +TBD + +InfiniBand core interfaces +========================== + +.. kernel-doc:: drivers/infiniband/core/iwpm_util.h + :internal: + +.. kernel-doc:: drivers/infiniband/core/cq.c + :export: + +.. kernel-doc:: drivers/infiniband/core/cm.c + :export: + +.. kernel-doc:: drivers/infiniband/core/rw.c + :export: + +.. kernel-doc:: drivers/infiniband/core/device.c + :export: + +.. kernel-doc:: drivers/infiniband/core/verbs.c + :export: + +.. kernel-doc:: drivers/infiniband/core/packer.c + :export: + +.. kernel-doc:: drivers/infiniband/core/sa_query.c + :export: + +.. kernel-doc:: drivers/infiniband/core/ud_header.c + :export: + +.. kernel-doc:: drivers/infiniband/core/umem.c + :export: + +.. kernel-doc:: drivers/infiniband/core/umem_odp.c + :export: + +RDMA Verbs transport library +============================ + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/mr.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/rc.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/ah.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/vt.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/cq.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/qp.c + :export: + +.. kernel-doc:: drivers/infiniband/sw/rdmavt/mcast.c + :export: + +Upper Layer Protocols +===================== + +iSCSI Extensions for RDMA (iSER) +-------------------------------- + +.. kernel-doc:: drivers/infiniband/ulp/iser/iscsi_iser.h + :internal: + +.. kernel-doc:: drivers/infiniband/ulp/iser/iscsi_iser.c + :functions: iscsi_iser_pdu_alloc iser_initialize_task_headers + iscsi_iser_task_init iscsi_iser_mtask_xmit iscsi_iser_task_xmit + iscsi_iser_cleanup_task iscsi_iser_check_protection + iscsi_iser_conn_create iscsi_iser_conn_bind + iscsi_iser_conn_start iscsi_iser_conn_stop + iscsi_iser_session_destroy iscsi_iser_session_create + iscsi_iser_set_param iscsi_iser_ep_connect iscsi_iser_ep_poll + iscsi_iser_ep_disconnect + +.. kernel-doc:: drivers/infiniband/ulp/iser/iser_initiator.c + :internal: + +.. kernel-doc:: drivers/infiniband/ulp/iser/iser_verbs.c + :internal: + +InfiniBand SCSI RDMA protocol target support +-------------------------------------------- + +.. kernel-doc:: drivers/infiniband/ulp/srpt/ib_srpt.h + :internal: + +.. kernel-doc:: drivers/infiniband/ulp/srpt/ib_srpt.c + :internal: + +iSCSI Extensions for RDMA (iSER) target support +----------------------------------------------- + +.. kernel-doc:: drivers/infiniband/ulp/isert/ib_isert.c + :internal: + -- cgit v1.3.1