From mboxrd@z Thu Jan 1 00:00:00 1970 From: samitolvanen@google.com (Sami Tolvanen) Date: Wed, 15 Nov 2017 13:34:16 -0800 Subject: [PATCH v2 06/18] arm64: kvm: use -fno-jump-tables with clang In-Reply-To: <20171115213428.22559-1-samitolvanen@google.com> References: <20171115213428.22559-1-samitolvanen@google.com> Message-ID: <20171115213428.22559-7-samitolvanen@google.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Use -fno-jump-tables to make sure clang doesn't generate branches to EL1 virtual addresses. Suggested-by: AKASHI Takahiro Signed-off-by: Sami Tolvanen --- 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