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 --- arch/arm64/tools/cpucaps | 134 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 arch/arm64/tools/cpucaps (limited to 'arch/arm64/tools/cpucaps') diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps new file mode 100644 index 000000000..2775ba335 --- /dev/null +++ b/arch/arm64/tools/cpucaps @@ -0,0 +1,134 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Internal CPU capabilities constants + +ALWAYS_BOOT +ALWAYS_SYSTEM +BTI +# Unreliable: use system_supports_32bit_el0() instead. +HAS_32BIT_EL0_DO_NOT_USE +HAS_32BIT_EL1 +HAS_ADDRESS_AUTH +HAS_ADDRESS_AUTH_ARCH_QARMA3 +HAS_ADDRESS_AUTH_ARCH_QARMA5 +HAS_ADDRESS_AUTH_IMP_DEF +HAS_AMU_EXTN +HAS_ARMv8_4_TTL +HAS_BBML3 +HAS_CACHE_DIC +HAS_CACHE_IDC +HAS_CNP +HAS_CRC32 +HAS_DCPODP +HAS_DCPOP +HAS_DIT +HAS_E0PD +HAS_ECV +HAS_ECV_CNTPOFF +HAS_EPAN +HAS_EVT +HAS_FPMR +HAS_FGT +HAS_FGT2 +HAS_FPSIMD +HAS_GCS +HAS_GENERIC_AUTH +HAS_GENERIC_AUTH_ARCH_QARMA3 +HAS_GENERIC_AUTH_ARCH_QARMA5 +HAS_GENERIC_AUTH_IMP_DEF +HAS_GICV3_CPUIF +HAS_GICV5_CPUIF +HAS_GICV5_LEGACY +HAS_GIC_PRIO_MASKING +HAS_GIC_PRIO_RELAXED_SYNC +HAS_ICH_HCR_EL2_TDIR +HAS_HCR_NV1 +HAS_HCX +HAS_LDAPR +HAS_LPA2 +HAS_LSE_ATOMICS +HAS_LS64 +HAS_LS64_V +HAS_LSUI +HAS_MOPS +HAS_NESTED_VIRT +HAS_NV2P1 +HAS_NV3 +HAS_PAN +HAS_PMUV3 +HAS_S1PIE +HAS_S1POE +HAS_SCTLR2 +HAS_RAS_EXTN +HAS_RASV1P1_EXTN +HAS_RNG +HAS_SB +HAS_STAGE2_FWB +HAS_TCR2 +HAS_TIDCP1 +HAS_TLB_RANGE +HAS_VA52 +HAS_VIRT_HOST_EXTN +HAS_WFXT +HAS_XNX +HAFT +HW_DBM +KVM_HVHE +KVM_PROTECTED_MODE +MISMATCHED_CACHE_TYPE +MPAM +MPAM_HCR +MTE +MTE_ASYMM +MTE_FAR +MTE_STORE_ONLY +SME +SME_FA64 +SME2 +SPECTRE_V2 +SPECTRE_V3A +SPECTRE_V4 +SPECTRE_BHB +SSBS +SVE +UNMAP_KERNEL_AT_EL0 +WORKAROUND_834220 +WORKAROUND_843419 +WORKAROUND_845719 +WORKAROUND_858921 +WORKAROUND_1418040 +WORKAROUND_1463225 +WORKAROUND_1508412 +WORKAROUND_1542419 +WORKAROUND_1742098 +WORKAROUND_1902691 +WORKAROUND_2038923 +WORKAROUND_2064142 +WORKAROUND_2077057 +WORKAROUND_2457168 +WORKAROUND_2645198 +WORKAROUND_2658417 +WORKAROUND_4193714 +WORKAROUND_4311569 +WORKAROUND_AMPERE_AC03_CPU_38 +WORKAROUND_AMPERE_AC04_CPU_23 +WORKAROUND_TRBE_OVERWRITE_FILL_MODE +WORKAROUND_TSB_FLUSH_FAILURE +WORKAROUND_TRBE_WRITE_OUT_OF_RANGE +WORKAROUND_CAVIUM_23154 +WORKAROUND_CAVIUM_27456 +WORKAROUND_CAVIUM_30115 +WORKAROUND_CAVIUM_TX2_219_PRFM +WORKAROUND_CAVIUM_TX2_219_TVM +WORKAROUND_CLEAN_CACHE +WORKAROUND_DEVICE_LOAD_ACQUIRE +WORKAROUND_DISABLE_CNP +WORKAROUND_GICv3_BROKEN_SEIS +WORKAROUND_NVIDIA_OLYMPUS_1027 +WORKAROUND_PMUV3_IMPDEF_TRAPS +WORKAROUND_QCOM_FALKOR_E1003 +WORKAROUND_QCOM_ORYON_CNTVOFF +WORKAROUND_REPEAT_TLBI_SYNC +WORKAROUND_SPECULATIVE_AT +WORKAROUND_SPECULATIVE_SSBS +WORKAROUND_SPECULATIVE_UNPRIV_LOAD -- cgit v1.3.1