From 27600805e62f800bacf990354632eae4e487d34c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Thu, 3 Sep 2026 10:43:25 -0500 Subject: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL. Fixes: 0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching") Closes: https://sashiko.dev/#/patchset/20260806160159.230453-1-jason.andryuk%40amd.com Reported-by: Sashiko Assisted-by: LLM Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Mario Limonciello (AMD) Cc: Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com --- drivers/tee/optee/Kconfig | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/tee/optee/Kconfig (limited to 'drivers/tee/optee/Kconfig') diff --git a/drivers/tee/optee/Kconfig b/drivers/tee/optee/Kconfig new file mode 100644 index 000000000..50d2051f7 --- /dev/null +++ b/drivers/tee/optee/Kconfig @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +# OP-TEE Trusted Execution Environment Configuration +config OPTEE + tristate "OP-TEE" + depends on HAVE_ARM_SMCCC + depends on MMU + depends on RPMB || !RPMB + help + This implements the OP-TEE Trusted Execution Environment (TEE) + driver. + +config OPTEE_INSECURE_LOAD_IMAGE + bool "Load OP-TEE image as firmware" + default n + depends on OPTEE && ARM64 + help + This loads the BL32 image for OP-TEE as firmware when the driver is + probed. This returns -EPROBE_DEFER until the firmware is loadable from + the filesystem which is determined by checking the system_state until + it is in SYSTEM_RUNNING. This also requires enabling the corresponding + option in Trusted Firmware for Arm. The documentation there explains + the security threat associated with enabling this as well as + mitigations at the firmware and platform level. + https://trustedfirmware-a.readthedocs.io/en/latest/threat_model/threat_model.html + + Additional documentation on kernel security risks are at + Documentation/tee/op-tee.rst. + +config OPTEE_STATIC_PROTMEM_POOL + bool + depends on HAS_IOMEM && TEE_DMABUF_HEAPS + default y -- cgit v1.3.1