diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2016-03-21 11:00:17 +0000 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-08-14 11:17:55 +0800 |
| commit | 8db423d76122953a279cc02e45a43769c82164e7 (patch) | |
| tree | fc9212f3d09d7654176bbc7c557084df91873c3a | |
| parent | 89912966d1c4cf3c48f632fdc571232b5b0bdd63 (diff) | |
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>
(cherry picked from commit a6cdf1c08cbfe0818a3d8042844d75bf74fd82bd)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Conflicts:
arch/arm64/kvm/hyp/Makefile
| -rw-r--r-- | arch/arm64/kvm/hyp/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 826032bc3945..acde4782621a 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -12,3 +12,7 @@ obj-$(CONFIG_KVM_ARM_HOST) += switch.o obj-$(CONFIG_KVM_ARM_HOST) += fpsimd.o obj-$(CONFIG_KVM_ARM_HOST) += tlb.o obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o + +GCOV_PROFILE := n +KASAN_SANITIZE := n +UBSAN_SANITIZE := n |