From mboxrd@z Thu Jan 1 00:00:00 1970 From: cdall@linaro.org (Christoffer Dall) Date: Thu, 18 May 2017 11:47:11 +0200 Subject: [PULL 02/13] arm64: KVM: Do not use stack-protector to compile EL2 code In-Reply-To: <20170518094722.9926-1-cdall@linaro.org> References: <20170518094722.9926-1-cdall@linaro.org> Message-ID: <20170518094722.9926-3-cdall@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Marc Zyngier We like living dangerously. Nothing explicitely forbids stack-protector to be used in the EL2 code, while distributions routinely compile their kernel with it. We're just lucky that no code actually triggers the instrumentation. Let's not try our luck for much longer, and disable stack-protector for code living at EL2. Cc: stable at vger.kernel.org Signed-off-by: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Christoffer Dall --- arch/arm64/kvm/hyp/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index aaf42ae..14c4e3b 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -2,6 +2,8 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # +ccflags-y += -fno-stack-protector + KVM=../../../../virt/kvm obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v2-sr.o -- 2.9.0