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 --- lib/raid/Kconfig | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 lib/raid/Kconfig (limited to 'lib/raid/Kconfig') diff --git a/lib/raid/Kconfig b/lib/raid/Kconfig new file mode 100644 index 000000000..01f007b25 --- /dev/null +++ b/lib/raid/Kconfig @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: GPL-2.0 + +config XOR_BLOCKS + tristate + +# selected by architectures that provide an optimized XOR implementation +config XOR_BLOCKS_ARCH + depends on XOR_BLOCKS + default y if ALPHA + default y if ARM + default y if ARM64 + default y if CPU_HAS_LSX # loongarch + default y if ALTIVEC # powerpc + default y if RISCV_ISA_V + default y if SPARC + default y if S390 + default y if X86_32 + default y if X86_64 + bool + +config XOR_KUNIT_TEST + tristate "KUnit tests for xor_gen" if !KUNIT_ALL_TESTS + depends on KUNIT + depends on XOR_BLOCKS + default KUNIT_ALL_TESTS + help + Unit tests for the XOR library functions. + + This is intended to help people writing architecture-specific + optimized versions. If unsure, say N. + +config XOR_BENCHMARK + bool "Benchmark for xor_gen" + depends on XOR_KUNIT_TEST + help + Include benchmarks in the KUnit test suite for xor_gen. + +config RAID6_PQ + tristate + +# selected by architectures that provide an optimized PQ implementation +config RAID6_PQ_ARCH + depends on RAID6_PQ + default y if KERNEL_MODE_NEON # arm32/arm64 + default y if LOONGARCH + default y if ALTIVEC # powerpc + default y if RISCV_ISA_V + default y if S390 + default y if X86 + bool + +config RAID6_PQ_KUNIT_TEST + tristate "KUnit tests for RAID6 PQ functions" if !KUNIT_ALL_TESTS + depends on KUNIT + depends on RAID6_PQ + default KUNIT_ALL_TESTS + help + Unit tests for the RAID6 PQ library functions. + + This is intended to help people writing architecture-specific + optimized versions. If unsure, say N. + +config RAID6_PQ_KUNIT_BENCHMARK + bool "Benchmark for RAID6 PQ" + depends on RAID6_PQ_KUNIT_TEST + help + Include benchmarks in the KUnit test suite for raid P/Q generation. + +config RAID6_PQ_BENCHMARK + bool "Automatically choose fastest RAID6 PQ functions" + depends on RAID6_PQ + default y + help + Benchmark all available RAID6 PQ functions on init and choose the + fastest one. -- cgit v1.3.1