[RFC 04/55] KVM: arm64: Allow userspace to set PSR_MODE_EL2x

Jintack Lim jintack at cs.columbia.edu
Sun Jan 8 22:24:00 PST 2017

From: Christoffer Dall <christoffer.dall at linaro.org>

We were not allowing userspace to set a more privileged mode for the VCPU
than EL1, but now that we support nesting with a virtual EL2 mode, do
allow this!

Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
Signed-off-by: Jintack Lim <jintack at cs.columbia.edu>
 arch/arm64/kvm/guest.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 3f9e157..6b9f38a 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -117,6 +117,8 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 		case PSR_MODE_EL0t:
 		case PSR_MODE_EL1t:
 		case PSR_MODE_EL1h:
+		case PSR_MODE_EL2h:
+		case PSR_MODE_EL2t:
 			err = -EINVAL;

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