| Message ID | 20241212155610.76522-25-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: Support for Arm CCA in KVM | expand |
On 12/13/24 1:55 AM, Steven Price wrote: > The RMM doesn't allow injection of a undefined exception into a realm > guest. Add a WARN to catch if this ever happens. > > Signed-off-by: Steven Price <steven.price@arm.com> > --- > arch/arm64/kvm/inject_fault.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c > index 611867b81ac2..705463058ce0 100644 > --- a/arch/arm64/kvm/inject_fault.c > +++ b/arch/arm64/kvm/inject_fault.c > @@ -226,6 +226,8 @@ void kvm_inject_size_fault(struct kvm_vcpu *vcpu) > */ > void kvm_inject_undefined(struct kvm_vcpu *vcpu) > { > + if (vcpu_is_rec(vcpu)) > + WARN(1, "Cannot inject undefined exception into REC. Continuing with unknown behaviour"); May be more compact with: WARN(vcpu_is_rec(vcpu), "Unexpected undefined exception injection to REC"); > if (vcpu_el1_is_32bit(vcpu)) > inject_undef32(vcpu); > else Thanks, Gavin
diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c index 611867b81ac2..705463058ce0 100644 --- a/arch/arm64/kvm/inject_fault.c +++ b/arch/arm64/kvm/inject_fault.c @@ -226,6 +226,8 @@ void kvm_inject_size_fault(struct kvm_vcpu *vcpu) */ void kvm_inject_undefined(struct kvm_vcpu *vcpu) { + if (vcpu_is_rec(vcpu)) + WARN(1, "Cannot inject undefined exception into REC. Continuing with unknown behaviour"); if (vcpu_el1_is_32bit(vcpu)) inject_undef32(vcpu); else
The RMM doesn't allow injection of a undefined exception into a realm guest. Add a WARN to catch if this ever happens. Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/kvm/inject_fault.c | 2 ++ 1 file changed, 2 insertions(+)