Commit 72adac1b authored by Kalesh Singh's avatar Kalesh Singh Committed by Marc Zyngier
Browse files

KVM: arm64: Add PROTECTED_NVHE_STACKTRACE Kconfig 



This can be used to disable stacktrace for the protected KVM
nVHE hypervisor, in order to save on the associated memory usage.

This option is disabled by default, since protected KVM is not widely
used on platforms other than Android currently.

Signed-off-by: default avatarKalesh Singh <kaleshsingh@google.com>
Reviewed-by: default avatarFuad Tabba <tabba@google.com>
Tested-by: default avatarFuad Tabba <tabba@google.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220726073750.3219117-13-kaleshsingh@google.com
parent 314a61dc

arch/arm64/kvm/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -46,6 +46,21 @@ menuconfig KVM 


	  If unsure, say N.



config PROTECTED_NVHE_STACKTRACE

	bool "Protected KVM hypervisor stacktraces"

	depends on NVHE_EL2_DEBUG

	default n

	help

	  Say Y here to enable pKVM hypervisor stacktraces on hyp_panic()



	  If you are not using protected nVHE (pKVM), say N.



	  If using protected nVHE mode, but cannot afford the associated

	  memory cost (less than 0.75 page per CPU) of pKVM stacktraces,

	  say N.



	  If unsure, say N.



config NVHE_EL2_DEBUG

	bool "Debug mode for non-VHE EL2 object"

	depends on KVM