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arm64: allow building with kcov coverage on ARM64

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

Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Alexander Potapenko
2016-06-16 18:39:52 +02:00
committed by Catalin Marinas
parent 6b14c517a2
commit 5e4c7549f7
2 changed files with 5 additions and 0 deletions
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1
arch/arm64/Kconfig
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@@ -7,6 +7,7 @@ config ARM64
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_KCOV
select ARCH_HAS_SG_CHAIN select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_CMPXCHG_LOCKREF

4
arch/arm64/kvm/hyp/Makefile
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@@ -17,6 +17,10 @@ obj-$(CONFIG_KVM_ARM_HOST) += tlb.o
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o
obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.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 GCOV_PROFILE := n
KASAN_SANITIZE := n KASAN_SANITIZE := n
UBSAN_SANITIZE := n UBSAN_SANITIZE := n
KCOV_INSTRUMENT := n