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/sound/sof/pm.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/sound/sof/pm.h (limited to 'include/sound/sof/pm.h') diff --git a/include/sound/sof/pm.h b/include/sound/sof/pm.h new file mode 100644 index 000000000..df55bfe58 --- /dev/null +++ b/include/sound/sof/pm.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * Copyright(c) 2018 Intel Corporation + */ + +#ifndef __INCLUDE_SOUND_SOF_PM_H__ +#define __INCLUDE_SOUND_SOF_PM_H__ + +#include + +/* + * PM + */ + +/* PM context element */ +struct sof_ipc_pm_ctx_elem { + struct sof_ipc_hdr hdr; + uint32_t type; + uint32_t size; + uint64_t addr; +} __packed; + +/* + * PM context - SOF_IPC_PM_CTX_SAVE, SOF_IPC_PM_CTX_RESTORE, + * SOF_IPC_PM_CTX_SIZE + */ +struct sof_ipc_pm_ctx { + struct sof_ipc_cmd_hdr hdr; + struct sof_ipc_host_buffer buffer; + uint32_t num_elems; + uint32_t size; + + /* reserved for future use */ + uint32_t reserved[8]; + + struct sof_ipc_pm_ctx_elem elems[]; +} __packed; + +/* enable or disable cores - SOF_IPC_PM_CORE_ENABLE */ +struct sof_ipc_pm_core_config { + struct sof_ipc_cmd_hdr hdr; + uint32_t enable_mask; +} __packed; + +struct sof_ipc_pm_gate { + struct sof_ipc_cmd_hdr hdr; + uint32_t flags; /* platform specific */ + + /* reserved for future use */ + uint32_t reserved[5]; +} __packed; + +#endif -- cgit v1.3.1