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authorCatalin Marinas <catalin.marinas@arm.com>2016-03-21 14:00:17 +0300
committerChristoffer Dall <christoffer.dall@linaro.org>2016-03-21 16:02:17 +0300
commita6cdf1c08cbfe0818a3d8042844d75bf74fd82bd (patch)
tree28fdc4f1d1294e204e8266eb8b07f03b040d01b8 /arch/arm64
parent2510ffe17f9707eb96cf286cf5d11ad372ff679f (diff)
downloadlinux-a6cdf1c08cbfe0818a3d8042844d75bf74fd82bd.tar.xz
kvm: arm64: Disable compiler instrumentation for hypervisor code
With the recent rewrite of the arm64 KVM hypervisor code in C, enabling certain options like KASAN would allow the compiler to generate memory accesses or function calls to addresses not mapped at EL2. This patch disables the compiler instrumentation on the arm64 hypervisor code for gcov-based profiling (GCOV_KERNEL), undefined behaviour sanity checker (UBSAN) and kernel address sanitizer (KASAN). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: <stable@vger.kernel.org> # 4.5+ Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/kvm/hyp/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile
index b6a8fc5ad1af..778d0effa2af 100644
--- a/arch/arm64/kvm/hyp/Makefile
+++ b/arch/arm64/kvm/hyp/Makefile
@@ -16,3 +16,7 @@ obj-$(CONFIG_KVM_ARM_HOST) += fpsimd.o
obj-$(CONFIG_KVM_ARM_HOST) += tlb.o
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o
obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o
+
+GCOV_PROFILE := n
+KASAN_SANITIZE := n
+UBSAN_SANITIZE := n