diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-15 12:47:14 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-19 14:06:46 +0100 |
| commit | dee39247dc75465a24990cb1772c6aaced5fd910 (patch) | |
| tree | fb6f241d24eaee60ad33127a318521dccae02661 /arch/arm64/kvm/Kconfig | |
| parent | arm64: Make BP hardening slot counter available (diff) | |
| download | linux-dee39247dc75465a24990cb1772c6aaced5fd910.tar.xz linux-dee39247dc75465a24990cb1772c6aaced5fd910.zip | |
arm64: KVM: Allow mapping of vectors outside of the RAM region
We're now ready to map our vectors in weird and wonderful locations.
On enabling ARM64_HARDEN_EL2_VECTORS, a vector slot gets allocated
if this hasn't been already done via ARM64_HARDEN_BRANCH_PREDICTOR
and gets mapped outside of the normal RAM region, next to the
idmap.
That way, being able to obtain VBAR_EL2 doesn't reveal the mapping
of the rest of the hypervisor code.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/kvm/Kconfig')
| -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 bd8cc03d7522..a2e3a5af1113 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 KVM && HARDEN_BRANCH_PREDICTOR + def_bool KVM && (HARDEN_BRANCH_PREDICTOR || HARDEN_EL2_VECTORS) source drivers/vhost/Kconfig |