Add the FEAT_S1PIE EL2 registers the sysreg descriptor array so that
they can be handled as a trap.
Access to these registers is conditional based on ID_AA64MMFR3_EL1.S1PIE
being advertised.
Similarly to other other changes, PIRE0_EL2 is guaranteed to trap
thanks to the D22677 update to the architecture.
Reviewed-by: Joey Gouly <joey.gouly@xxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kvm/sys_regs.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index c109f9c8c5c64..81c7099a7a825 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -361,6 +361,18 @@ static bool access_rw(struct kvm_vcpu *vcpu,
return true;
}
+static bool check_s1pie_access_rw(struct kvm_vcpu *vcpu,
+ struct sys_reg_params *p,
+ const struct sys_reg_desc *r)
+{
+ if (!kvm_has_feat(vcpu->kvm, ID_AA64MMFR3_EL1, S1PIE, IMP)) {
+ kvm_inject_undefined(vcpu);
+ return false;
+ }
+
+ return access_rw(vcpu, p, r);
+}
+
/*
* See note at ARMv7 ARM B1.14.4 (TL;DR: S/W ops are not easily virtualized).
*/
@@ -2842,6 +2854,8 @@ static const struct sys_reg_desc sys_reg_descs[] = {
EL2_REG(HPFAR_EL2, access_rw, reset_val, 0),
EL2_REG(MAIR_EL2, access_rw, reset_val, 0),
+ EL2_REG(PIRE0_EL2, check_s1pie_access_rw, reset_val, 0),
+ EL2_REG(PIR_EL2, check_s1pie_access_rw, reset_val, 0),
EL2_REG(AMAIR_EL2, access_rw, reset_val, 0),
EL2_REG(VBAR_EL2, access_rw, reset_val, 0),
--
2.39.2
