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ANDROID: KVM: arm64: disable CFI for hypervisor code

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Disable LTO+CFI for code that runs at EL2 to avoid address space
confusion as the CFI jump tables point to EL1 addresses.

Bug: 145210207
Change-Id: I81359ec648b2616e85dfd3bb399327bac980b3fe
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen 2018-04-23 12:52:07 -07:00 committed by Alistair Delva
parent 4c81c26cdc
commit 2df99b6397
2 changed files with 4 additions and 0 deletions
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1
arch/arm64/kvm/Makefile
View File

@ -4,6 +4,7 @@
# #
ccflags-y += -I $(srctree)/$(src) ccflags-y += -I $(srctree)/$(src)
CFLAGS_REMOVE_debug.o += $(CC_FLAGS_CFI)
KVM=../../../virt/kvm KVM=../../../virt/kvm

3
arch/arm64/kvm/hyp/Makefile
View File

@ -11,3 +11,6 @@ subdir-ccflags-y := -I$(incdir) \
$(DISABLE_STACKLEAK_PLUGIN) $(DISABLE_STACKLEAK_PLUGIN)
obj-$(CONFIG_KVM) += vhe/ nvhe/ pgtable.o smccc_wa.o obj-$(CONFIG_KVM) += vhe/ nvhe/ pgtable.o smccc_wa.o
# Disable LTO+CFI for the files in this directory
KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))