diff options
| author | Marc Zyngier <maz@kernel.org> | 2024-02-22 14:12:09 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-02-22 18:13:53 +0000 |
| commit | 99101dda29e3186b1356b0dc4dbb835c02c71ac9 (patch) | |
| tree | 3a73cceb7f57a143fb732adf31fe015a1b446a4f /arch/arm64/kvm/Kconfig | |
| parent | 891766581deaf84919911c6a046592ce0ac49bc6 (diff) | |
KVM: arm64: Make build-time check of RES0/RES1 bits optional
In order to ease the transition towards a state of absolute
paranoia where all RES0/RES1 bits gets checked against what
KVM know of them, make the checks optional and guarded by a
config symbol (CONFIG_KVM_ARM64_RES_BITS_PARANOIA) default to n.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/kvm/87frxka7ud.wl-maz@kernel.org/
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm/Kconfig')
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 5c2a672c06a8..fa9389270cfe 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -67,4 +67,15 @@ config PROTECTED_NVHE_STACKTRACE If unsure, or not using protected nVHE (pKVM), say N. +config KVM_ARM64_RES_BITS_PARANOIA + bool "Build-time check of RES0/RES1 bits" + depends on KVM + default n + help + Say Y here to validate that KVM's knowledge of most system + registers' RES0/RES1 bits matches when the rest of the kernel + defines. Expect the build to fail badly if you enable this. + + Just say N. + endif # VIRTUALIZATION |