diff options
| author | Marc Zyngier <maz@kernel.org> | 2023-08-15 19:38:57 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-08-17 10:00:27 +0100 |
| commit | a77b31dce4375be15014b10e8f94a149592ea6b6 (patch) | |
| tree | 62fbc582d5e06bc4d388540c4001b6f94974a1b9 /arch/arm64/kvm/arm.c | |
| parent | d0be0b2ede13247c53745d50e2a5993f2b27c802 (diff) | |
KVM: arm64: nv: Add SVC trap forwarding
HFGITR_EL2 allows the trap of SVC instructions to EL2. Allow these
traps to be forwarded. Take this opportunity to deny any 32bit activity
when NV is enabled.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230815183903.2735724-24-maz@kernel.org
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 72dc53a75d1c..8b51570a76f8 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -36,6 +36,7 @@ #include <asm/kvm_arm.h> #include <asm/kvm_asm.h> #include <asm/kvm_mmu.h> +#include <asm/kvm_nested.h> #include <asm/kvm_pkvm.h> #include <asm/kvm_emulate.h> #include <asm/sections.h> @@ -818,6 +819,9 @@ static bool vcpu_mode_is_bad_32bit(struct kvm_vcpu *vcpu) if (likely(!vcpu_mode_is_32bit(vcpu))) return false; + if (vcpu_has_nv(vcpu)) + return true; + return !kvm_supports_32bit_el0(); } |