Message ID | 1465984523-68478-1-git-send-email-glider@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Wed, 15 Jun 2016 11:55:23 +0200 Alexander Potapenko <glider@google.com> wrote: > 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> M.
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 5a0a691..eb0b0a0 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -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 diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 778d0ef..0c85feb 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -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