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Commit 5e4c7549 authored by Alexander Potapenko's avatar Alexander Potapenko Committed by Catalin Marinas
Browse files

arm64: allow building with kcov coverage on ARM64 



Add ARCH_HAS_KCOV to ARM64 config. To avoid potential crashes, disable
instrumentation of the files in arch/arm64/kvm/hyp/*.

Signed-off-by: default avatarAlexander Potapenko <glider@google.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Tested-by: default avatarJames Morse <james.morse@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 6b14c517

arch/arm64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ config ARM64 
	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE

	select ARCH_HAS_ELF_RANDOMIZE

	select ARCH_HAS_GCOV_PROFILE_ALL

	select ARCH_HAS_KCOV

	select ARCH_HAS_SG_CHAIN

	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

	select ARCH_USE_CMPXCHG_LOCKREF

arch/arm64/kvm/hyp/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -17,6 +17,10 @@ obj-$(CONFIG_KVM_ARM_HOST) += tlb.o 
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o

obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o



# KVM 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