v4.19.13 snapshot.
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
new file mode 100644
index 0000000..347137e
--- /dev/null
+++ b/arch/x86/kernel/cpu/Makefile
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for x86-compatible CPU details, features and quirks
+#
+
+# Don't trace early stages of a secondary CPU boot
+ifdef CONFIG_FUNCTION_TRACER
+CFLAGS_REMOVE_common.o = -pg
+CFLAGS_REMOVE_perf_event.o = -pg
+endif
+
+# If these files are instrumented, boot hangs during the first second.
+KCOV_INSTRUMENT_common.o := n
+KCOV_INSTRUMENT_perf_event.o := n
+
+# Make sure load_percpu_segment has no stackprotector
+nostackp := $(call cc-option, -fno-stack-protector)
+CFLAGS_common.o := $(nostackp)
+
+obj-y := cacheinfo.o scattered.o topology.o
+obj-y += common.o
+obj-y += rdrand.o
+obj-y += match.o
+obj-y += bugs.o
+obj-y += aperfmperf.o
+obj-y += cpuid-deps.o
+
+obj-$(CONFIG_PROC_FS) += proc.o
+obj-$(CONFIG_X86_FEATURE_NAMES) += capflags.o powerflags.o
+
+obj-$(CONFIG_CPU_SUP_INTEL) += intel.o intel_pconfig.o
+obj-$(CONFIG_CPU_SUP_AMD) += amd.o
+obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o
+obj-$(CONFIG_CPU_SUP_CENTAUR) += centaur.o
+obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o
+obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o
+
+obj-$(CONFIG_INTEL_RDT) += intel_rdt.o intel_rdt_rdtgroup.o intel_rdt_monitor.o
+obj-$(CONFIG_INTEL_RDT) += intel_rdt_ctrlmondata.o intel_rdt_pseudo_lock.o
+CFLAGS_intel_rdt_pseudo_lock.o = -I$(src)
+
+obj-$(CONFIG_X86_MCE) += mcheck/
+obj-$(CONFIG_MTRR) += mtrr/
+obj-$(CONFIG_MICROCODE) += microcode/
+
+obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
+
+obj-$(CONFIG_HYPERVISOR_GUEST) += vmware.o hypervisor.o mshyperv.o
+
+ifdef CONFIG_X86_FEATURE_NAMES
+quiet_cmd_mkcapflags = MKCAP $@
+ cmd_mkcapflags = $(CONFIG_SHELL) $(srctree)/$(src)/mkcapflags.sh $< $@
+
+cpufeature = $(src)/../../include/asm/cpufeatures.h
+
+targets += capflags.c
+$(obj)/capflags.c: $(cpufeature) $(src)/mkcapflags.sh FORCE
+ $(call if_changed,mkcapflags)
+endif
+clean-files += capflags.c