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: /lib/modules/5.11.0-1022-aws/build/arch/arm64/kvm/hyp/nvhe/ [ drwxr-xr-x ]
name : Makefile # SPDX-License-Identifier: GPL-2.0 # # Makefile for Kernel-based Virtual Machine module, HYP/nVHE part # asflags-y := -D__KVM_NVHE_HYPERVISOR__ ccflags-y := -D__KVM_NVHE_HYPERVISOR__ obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \ hyp-main.o hyp-smp.o psci-relay.o obj-y += ../vgic-v3-sr.o ../aarch32.o ../vgic-v2-cpuif-proxy.o ../entry.o \ ../fpsimd.o ../hyp-entry.o ../exception.o ## ## Build rules for compiling nVHE hyp code ## Output of this folder is `kvm_nvhe.o`, a partially linked object ## file containing all nVHE hyp code and data. ## hyp-obj := $(patsubst %.o,%.nvhe.o,$(obj-y)) obj-y := kvm_nvhe.o extra-y := $(hyp-obj) kvm_nvhe.tmp.o hyp.lds # 1) Compile all source files to `.nvhe.o` object files. The file extension # avoids file name clashes for files shared with VHE. $(obj)/%.nvhe.o: $(src)/%.c FORCE $(call if_changed_rule,cc_o_c) $(obj)/%.nvhe.o: $(src)/%.S FORCE $(call if_changed_rule,as_o_S) # 2) Compile linker script. $(obj)/hyp.lds: $(src)/hyp.lds.S FORCE $(call if_changed_dep,cpp_lds_S) # 3) Partially link all '.nvhe.o' files and apply the linker script. # Prefixes names of ELF sections with '.hyp', eg. '.hyp.text'. # Note: The following rule assumes that the 'ld' rule puts LDFLAGS before # the list of dependencies to form '-T $(obj)/hyp.lds'. This is to # keep the dependency on the target while avoiding an error from # GNU ld if the linker script is passed to it twice. LDFLAGS_kvm_nvhe.tmp.o := -r -T $(obj)/kvm_nvhe.tmp.o: $(obj)/hyp.lds $(addprefix $(obj)/,$(hyp-obj)) FORCE $(call if_changed,ld) # 4) Produce the final 'kvm_nvhe.o', ready to be linked into 'vmlinux'. # Prefixes names of ELF symbols with '__kvm_nvhe_'. $(obj)/kvm_nvhe.o: $(obj)/kvm_nvhe.tmp.o FORCE $(call if_changed,hypcopy) # The HYPCOPY command uses `objcopy` to prefix all ELF symbol names # to avoid clashes with VHE code/data. quiet_cmd_hypcopy = HYPCOPY $@ cmd_hypcopy = $(OBJCOPY) --prefix-symbols=__kvm_nvhe_ $< $@ # Remove ftrace and Shadow Call Stack CFLAGS. # This is equivalent to the 'notrace' and '__noscs' annotations. KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) # KVM nVHE code is run at a different exception code with a different map, so # compiler instrumentation that inserts callbacks or checks into the code may # cause crashes. Just disable it. GCOV_PROFILE := n KASAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n # Skip objtool checking for this directory because nVHE code is compiled with # non-standard build rules. OBJECT_FILES_NON_STANDARD := y