github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 06:25:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

kvm: arm64: Disable compiler instrumentation for hypervisor code

Browse Source 
With the recent rewrite of the arm64 KVM hypervisor code in C, enabling
certain options like KASAN would allow the compiler to generate memory
accesses or function calls to addresses not mapped at EL2. This patch
disables the compiler instrumentation on the arm64 hypervisor code for
gcov-based profiling (GCOV_KERNEL), undefined behaviour sanity checker
(UBSAN) and kernel address sanitizer (KASAN).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: <stable@vger.kernel.org> # 4.5+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
(cherry picked from commit a6cdf1c08c)
Signed-off-by: Alex Shi <alex.shi@linaro.org>

 Conflicts:
	arch/arm64/kvm/hyp/Makefile
This commit is contained in:
Catalin Marinas 2016-03-21 11:00:17 +00:00 committed by Alex Shi
parent 89912966d1
commit 8db423d761
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/kvm/hyp/Makefile
View File

@ -12,3 +12,7 @@ obj-$(CONFIG_KVM_ARM_HOST) += switch.o
obj-$(CONFIG_KVM_ARM_HOST) += fpsimd.o
obj-$(CONFIG_KVM_ARM_HOST) += tlb.o
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o
GCOV_PROFILE := n
KASAN_SANITIZE := n
UBSAN_SANITIZE := n