From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits. Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9") Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- include/uapi/rdma/efa-abi.h | 175 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 175 insertions(+) create mode 100644 include/uapi/rdma/efa-abi.h (limited to 'include/uapi/rdma/efa-abi.h') diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h new file mode 100644 index 000000000..2094b4bcc --- /dev/null +++ b/include/uapi/rdma/efa-abi.h @@ -0,0 +1,175 @@ +/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */ +/* + * Copyright 2018-2026 Amazon.com, Inc. or its affiliates. All rights reserved. + */ + +#ifndef EFA_ABI_USER_H +#define EFA_ABI_USER_H + +#include +#include + +/* + * Increment this value if any changes that break userspace ABI + * compatibility are made. + */ +#define EFA_UVERBS_ABI_VERSION 1 + +/* + * Keep structs aligned to 8 bytes. + * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the + * hex bit offset of the field. + */ + +enum { + EFA_ALLOC_UCONTEXT_CMD_SUPP_CAPS_TX_BATCH = 1 << 0, + EFA_ALLOC_UCONTEXT_CMD_SUPP_CAPS_MIN_SQ_WR = 1 << 1, +}; + +struct efa_ibv_alloc_ucontext_cmd { + __u32 supported_caps; + __u8 reserved_20[4]; +}; + +enum efa_ibv_user_cmds_supp_udata { + EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0, + EFA_USER_CMDS_SUPP_UDATA_CREATE_AH = 1 << 1, +}; + +struct efa_ibv_alloc_ucontext_resp { + __u32 comp_mask; + __u32 cmds_supp_udata_mask; + __u16 sub_cqs_per_cq; + __u16 inline_buf_size; + __u32 max_llq_size; /* bytes */ + __u16 max_tx_batch; /* units of 64 bytes */ + __u16 min_sq_wr; + __u16 inline_buf_size_ex; + __u8 reserved_b0[2]; +}; + +struct efa_ibv_alloc_pd_resp { + __u32 comp_mask; + __u16 pdn; + __u8 reserved_30[2]; +}; + +enum { + EFA_CREATE_CQ_WITH_COMPLETION_CHANNEL = 1 << 0, + EFA_CREATE_CQ_WITH_SGID = 1 << 1, + EFA_CREATE_CQ_WITH_SQ_COMP_64_BIT_REQ_ID = 1 << 2, +}; + +struct efa_ibv_create_cq { + __u32 comp_mask; + __u32 cq_entry_size; + __u16 num_sub_cqs; + __u8 flags; + __u8 reserved_58[5]; +}; + +enum { + EFA_CREATE_CQ_RESP_DB_OFF = 1 << 0, +}; + +struct efa_ibv_create_cq_resp { + __u32 comp_mask; + __u8 reserved_20[4]; + __aligned_u64 q_mmap_key; + __aligned_u64 q_mmap_size; + __u16 cq_idx; + __u8 reserved_d0[2]; + __u32 db_off; + __aligned_u64 db_mmap_key; +}; + +enum { + EFA_QP_DRIVER_TYPE_SRD = 0, +}; + +enum { + EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV = 1 << 0, + EFA_CREATE_QP_WITH_SQ_64_BIT_REQ_ID = 1 << 1, +}; + +struct efa_ibv_create_qp { + __u32 comp_mask; + __u32 rq_ring_size; /* bytes */ + __u32 sq_ring_size; /* bytes */ + __u32 driver_qp_type; + __u16 flags; + __u8 sl; + __u8 reserved_98[5]; +}; + +struct efa_ibv_create_qp_resp { + __u32 comp_mask; + /* the offset inside the page of the rq db */ + __u32 rq_db_offset; + /* the offset inside the page of the sq db */ + __u32 sq_db_offset; + /* the offset inside the page of descriptors buffer */ + __u32 llq_desc_offset; + __aligned_u64 rq_mmap_key; + __aligned_u64 rq_mmap_size; + __aligned_u64 rq_db_mmap_key; + __aligned_u64 sq_db_mmap_key; + __aligned_u64 llq_desc_mmap_key; + __u16 send_sub_cq_idx; + __u16 recv_sub_cq_idx; + __u8 reserved_1e0[4]; +}; + +struct efa_ibv_create_ah_resp { + __u32 comp_mask; + __u16 efa_address_handle; + __u8 reserved_30[2]; +}; + +enum { + EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0, + EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1, + EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS = 1 << 2, + EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID = 1 << 3, + EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128 = 1 << 4, + EFA_QUERY_DEVICE_CAPS_RDMA_WRITE = 1 << 5, + EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV = 1 << 6, + EFA_QUERY_DEVICE_CAPS_CQ_WITH_EXT_MEM = 1 << 7, + EFA_QUERY_DEVICE_CAPS_COMP_CNTR = 1 << 8, + EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID = 1 << 9, +}; + +struct efa_ibv_ex_query_device_resp { + __u32 comp_mask; + __u32 max_sq_wr; + __u32 max_rq_wr; + __u16 max_sq_sge; + __u16 max_rq_sge; + __u32 max_rdma_size; + __u32 device_caps; +}; + +enum { + EFA_QUERY_MR_VALIDITY_RECV_IC_ID = 1 << 0, + EFA_QUERY_MR_VALIDITY_RDMA_READ_IC_ID = 1 << 1, + EFA_QUERY_MR_VALIDITY_RDMA_RECV_IC_ID = 1 << 2, +}; + +enum efa_query_mr_attrs { + EFA_IB_ATTR_QUERY_MR_HANDLE = (1U << UVERBS_ID_NS_SHIFT), + EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY, + EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID, + EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID, + EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID, +}; + +enum efa_mr_methods { + EFA_IB_METHOD_MR_QUERY = (1U << UVERBS_ID_NS_SHIFT), +}; + +enum efa_comp_cntr_create_attrs { + EFA_IB_ATTR_CREATE_COMP_CNTR_COMP_BUFFER = (1U << UVERBS_ID_NS_SHIFT), + EFA_IB_ATTR_CREATE_COMP_CNTR_ERR_BUFFER, +}; + +#endif /* EFA_ABI_USER_H */ -- cgit v1.3.1