kernel/linux.git/drivers/peci/cpu.c, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

peci: cpu: add Intel Emerald Rapids support

2025-10-15T18:02:42+00:00

Add support for detection of Intel Emerald Rapids processor based on CPU model. Emerald Rapids Xeon processors with the model set to INTEL_EMERALDRAPIDS_X. The data field for this entry is "emr". Tested the patch series with AST2600 BMC with 5S Intel Emerald Rapids processors & verified by reading cpu & dimm temperature which matches host sensor values from lmsensors. Signed-off-by: Ivan Mikhaylov Reviewed-by: Paul Menzel Link: https://lore.kernel.org/r/20251006215321.5036-2-fr0st61te@gmail.com Signed-off-by: Guenter Roeck

module: Convert symbol namespace to string literal

2024-12-02T19:34:44+00:00

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds

peci, hwmon: Switch to new Intel CPU model defines

2024-06-17T13:15:46+00:00

Update peci subsystem to use the same vendor-family-model combined definition that core x86 code uses. Signed-off-by: Tony Luck Acked-by: Guenter Roeck Reviewed-by: Iwona Winiarska Link: https://lore.kernel.org/r/20240529171920.62571-1-tony.luck@intel.com Signed-off-by: Iwona Winiarska

peci: cpu: Add Intel Sapphire Rapids support

2023-08-07T16:27:55+00:00

Add support for detection of Intel Sapphire Rapids processor based on CPU family & model. Sapphire Rapids Xeon processors with the family set to 6 and the model set to INTEL_FAM6_SAPPHIRERAPIDS_X. The data field for this entry is "spr". Tested the patch series with AST2600 BMC with 4S Intel Sapphire Rapids processors & verified by reading cpu & dimm temperature. Signed-off-by: Patrick Rudolph Signed-off-by: Naresh Solanki Reviewed-by: Iwona Winiarska Signed-off-by: Iwona Winiarska Link: https://lore.kernel.org/r/20230725104354.33920-1-Naresh.Solanki@9elements.com

peci: cpu: Fix use-after-free in adev_release()

2022-08-15T18:31:35+00:00

When auxiliary_device_add() returns an error, auxiliary_device_uninit() is called, which causes refcount for device to be decremented and .release callback will be triggered. Because adev_release() re-calls auxiliary_device_uninit(), it will cause use-after-free: [ 1269.455172] WARNING: CPU: 0 PID: 14267 at lib/refcount.c:28 refcount_warn_saturate+0x110/0x15 [ 1269.464007] refcount_t: underflow; use-after-free. Reported-by: Jianglei Nie Signed-off-by: Iwona Winiarska Link: https://lore.kernel.org/r/20220705101501.298395-1-iwona.winiarska@intel.com

peci: Add peci-cpu driver

2022-02-09T07:04:44+00:00

PECI is an interface that may be used by different types of devices. Add a peci-cpu driver compatible with Intel processors. The driver is responsible for handling auxiliary devices that can subsequently be used by other drivers (e.g. hwmons). Reviewed-by: Pierre-Louis Bossart Acked-by: Joel Stanley Signed-off-by: Iwona Winiarska Link: https://lore.kernel.org/r/20220208153639.255278-10-iwona.winiarska@intel.com Signed-off-by: Greg Kroah-Hartman