/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/arch/arm64/xen
Edit: /usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/arch/arm64/xen/Makefile (171B)
xen-arm-y += $(addprefix ../../arm/xen/, enlighten.o grant-table.o p2m.o mm.o)
obj-y := xen-arm.o hypercall.o
obj-$(CONFIG_XEN_EFI) += $(addprefix ../../arm/xen/, efi.o)