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Defining the FGU behaviour is extremely tedious. It relies on matching each set of bits from FGT registers with am architectural feature, and adding them to the FGU list if the corresponding feature isn't advertised to the guest. It is however relatively easy to dump most of that information from the architecture JSON description, and use that to control the FGU bits. Let's introduce a new set of tables descripbing the mapping between FGT bits and features. Most of the time, this is only a lookup in an idreg field, with a few more complex exceptions. While this is obviously many more lines in a new file, this is mostly generated, and is pretty easy to maintain. Reviewed-by: Joey Gouly <joey.gouly@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org>
47 lines
1.4 KiB
Makefile
47 lines
1.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for Kernel-based Virtual Machine module
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#
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ccflags-y += -I $(src)
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include $(srctree)/virt/kvm/Makefile.kvm
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obj-$(CONFIG_KVM) += kvm.o
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obj-$(CONFIG_KVM) += hyp/
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CFLAGS_sys_regs.o += -Wno-override-init
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CFLAGS_handle_exit.o += -Wno-override-init
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kvm-y += arm.o mmu.o mmio.o psci.o hypercalls.o pvtime.o \
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inject_fault.o va_layout.o handle_exit.o config.o \
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guest.o debug.o reset.o sys_regs.o stacktrace.o \
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vgic-sys-reg-v3.o fpsimd.o pkvm.o \
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arch_timer.o trng.o vmid.o emulate-nested.o nested.o at.o \
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vgic/vgic.o vgic/vgic-init.o \
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vgic/vgic-irqfd.o vgic/vgic-v2.o \
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vgic/vgic-v3.o vgic/vgic-v4.o \
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vgic/vgic-mmio.o vgic/vgic-mmio-v2.o \
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vgic/vgic-mmio-v3.o vgic/vgic-kvm-device.o \
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vgic/vgic-its.o vgic/vgic-debug.o vgic/vgic-v3-nested.o
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kvm-$(CONFIG_HW_PERF_EVENTS) += pmu-emul.o pmu.o
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kvm-$(CONFIG_ARM64_PTR_AUTH) += pauth.o
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kvm-$(CONFIG_PTDUMP_STAGE2_DEBUGFS) += ptdump.o
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always-y := hyp_constants.h hyp-constants.s
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define rule_gen_hyp_constants
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$(call filechk,offsets,__HYP_CONSTANTS_H__)
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endef
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CFLAGS_hyp-constants.o = -I $(src)/hyp/include
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$(obj)/hyp-constants.s: $(src)/hyp/hyp-constants.c FORCE
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$(call if_changed_dep,cc_s_c)
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$(obj)/hyp_constants.h: $(obj)/hyp-constants.s FORCE
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$(call if_changed_rule,gen_hyp_constants)
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obj-kvm := $(addprefix $(obj)/, $(kvm-y))
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$(obj-kvm): $(obj)/hyp_constants.h
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