Thread (31 messages) 31 messages, 7 authors, 2020-06-25
STALE2221d
Revisions (3)
  1. v1 [diff vs current]
  2. v3 current
  3. v4 [diff vs current]

[PATCH v3 15/15] arm64: kvm: Lift instrumentation restrictions on VHE

From: David Brazdil <hidden>
Date: 2020-06-18 12:28:51
Also in: kvmarm, lkml
Subsystem: arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers: Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds

With VHE and nVHE executable code completely separated, remove build config
that disabled GCOV/KASAN/UBSAN/KCOV instrumentation for VHE as these now
execute under the same memory mappings as the rest of the kernel.

No violations are currently being reported by either KASAN or UBSAN.

Signed-off-by: David Brazdil <redacted>
---
 arch/arm64/kvm/hyp/Makefile | 8 --------
 1 file changed, 8 deletions(-)
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile
index 5f4f217532e0..cd0c3936d266 100644
--- a/arch/arm64/kvm/hyp/Makefile
+++ b/arch/arm64/kvm/hyp/Makefile
@@ -11,11 +11,3 @@ obj-$(CONFIG_KVM_INDIRECT_VECTORS) += smccc_wa.o
 
 hyp-y := vgic-v3-sr.o timer-sr.o aarch32.o vgic-v2-cpuif-proxy.o sysreg-sr.o \
 	 debug-sr.o entry.o switch.o fpsimd.o tlb.o hyp-entry.o
-
-# KVM code is run at a different exception code with a different map, so
-# compiler instrumentation that inserts callbacks or checks into the code may
-# cause crashes. Just disable it.
-GCOV_PROFILE	:= n
-KASAN_SANITIZE	:= n
-UBSAN_SANITIZE	:= n
-KCOV_INSTRUMENT	:= n
-- 
2.27.0


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