If a VM does something like this:
ldr pc, [r0] @ r0 is an I/O address
Then simply let that value load into the PC on kvm_handle_mmio_return
overwriting the PC value set from kvm_skip_instr.
Signed-off-by: Christoffer Dall <cdall@xxxxxxxxxxxxxxx>
---
arch/arm/kvm/mmio.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/arch/arm/kvm/mmio.c b/arch/arm/kvm/mmio.c
index 72a12f2..b8e06b7 100644
--- a/arch/arm/kvm/mmio.c
+++ b/arch/arm/kvm/mmio.c
@@ -86,12 +86,6 @@ static int decode_hsr(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
sign_extend = kvm_vcpu_dabt_issext(vcpu);
rt = kvm_vcpu_dabt_get_rd(vcpu);
- if (kvm_vcpu_reg_is_pc(vcpu, rt)) {
- /* IO memory trying to read/write pc */
- kvm_inject_pabt(vcpu, kvm_vcpu_get_hfar(vcpu));
- return 1;
- }
-
mmio->is_write = is_write;
mmio->phys_addr = fault_ipa;
mmio->len = len;
--
1.7.9.5
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