Commit 451f2f1c authored by Sai Prakash Ranjan's avatar Sai Prakash Ranjan Committed by Arnd Bergmann
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KVM: arm64: Add a flag to disable MMIO trace for nVHE KVM 



Add a generic flag (__DISABLE_TRACE_MMIO__) to disable MMIO
tracing in nVHE KVM as the tracepoint and MMIO logging symbols
should not be visible at nVHE KVM as there is no way to execute
them. It can also be used to disable MMIO tracing for specific
drivers.

Signed-off-by: default avatarSai Prakash Ranjan <quic_saipraka@quicinc.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent d593d64f

arch/arm64/kvm/hyp/nvhe/Makefile

+6 −1
Original line number Diff line number Diff line
@@ -4,7 +4,12 @@ 
#



asflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS

ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS



# Tracepoint and MMIO logging symbols should not be visible at nVHE KVM as

# there is no way to execute them and any such MMIO access from nVHE KVM

# will explode instantly (Words of Marc Zyngier). So introduce a generic flag

# __DISABLE_TRACE_MMIO__ to disable MMIO tracing for nVHE KVM.

ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS -D__DISABLE_TRACE_MMIO__



hostprogs := gen-hyprel

HOST_EXTRACFLAGS += -I$(objtree)/include