| From | Sami Tolvanen <> | Subject | [PATCH v2 06/18] arm64: kvm: use -fno-jump-tables with clang | Date | Wed, 15 Nov 2017 13:34:16 -0800 |
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Use -fno-jump-tables to make sure clang doesn't generate branches to EL1 virtual addresses.
Suggested-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> --- arch/arm64/kvm/hyp/Makefile | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index f04400d494b7..19fa1c6b6b69 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -5,6 +5,10 @@ ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING +ifeq ($(cc-name),clang) +ccflags-y += -fno-jump-tables +endif + KVM=../../../../virt/kvm obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v2-sr.o -- 2.15.0.448.gf294e3d99a-goog
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