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| author | David Brazdil <dbrazdil@google.com> | 2020-07-21 10:44:45 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-07-28 10:41:11 +0100 |
| commit | a59a2edbbba7397fede86e40a3da17e5beebf98b (patch) | |
| tree | fe9e1c6219cee12a7013d8b1b8e39b4b18c551b3 /arch/arm64/kvm | |
| parent | 24f69c0fa4e252f706884114b7d6353aa07678b5 (diff) | |
| download | lwn-a59a2edbbba7397fede86e40a3da17e5beebf98b.tar.gz lwn-a59a2edbbba7397fede86e40a3da17e5beebf98b.zip | |
KVM: arm64: Substitute RANDOMIZE_BASE for HARDEN_EL2_VECTORS
The HARDEN_EL2_VECTORS config maps vectors at a fixed location on cores which
are susceptible to Spector variant 3a (A57, A72) to prevent defeating hyp
layout randomization by leaking the value of VBAR_EL2.
Since this feature is only applicable when EL2 layout randomization is enabled,
unify both behind the same RANDOMIZE_BASE Kconfig. Majority of code remains
conditional on a capability selected for the affected cores.
Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200721094445.82184-3-dbrazdil@google.com
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 13489aff4440..318c8f2df245 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -58,7 +58,7 @@ config KVM_ARM_PMU virtual machines. config KVM_INDIRECT_VECTORS - def_bool HARDEN_BRANCH_PREDICTOR || HARDEN_EL2_VECTORS + def_bool HARDEN_BRANCH_PREDICTOR || RANDOMIZE_BASE endif # KVM |