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arm: KVM: Do not use stack-protector to compile HYP code

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commit 501ad27c67ed0b90df465f23d33e9aed64058a47 upstream.

We like living dangerously. Nothing explicitely forbids stack-protector
to be used in the HYP 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 HYP.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marc Zyngier 2017-05-02 14:30:38 +01:00 committed by Greg Kroah-Hartman
parent d0fb4b7d00
commit 0ba7e8e341
1 changed files with 2 additions and 0 deletions
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2
arch/arm/kvm/hyp/Makefile
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@ -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