[RFC v3 07/24] target/arm/kvm: Create scratch Realm VM when requested

From: Jean-Philippe Brucker <[email protected]>

When a Realm is requested, create a scratch Realm VM by setting bit 8
of the argument given to the KVM_CREATE_VM ioctl().  Bit 7-0 are reserved
for the guest PA size.

Signed-off-by: Jean-Philippe Brucker <[email protected]>
Signed-off-by: Mathieu Poirier <[email protected]>
---
 target/arm/kvm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index ff179a66b821..1acbd885bf4e 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -108,7 +108,9 @@ bool kvm_arm_create_scratch_host_vcpu(int *fdarray,
                                       struct kvm_vcpu_init *init)
 {
     int ret = 0, kvmfd = -1, vmfd = -1, cpufd = -1;
+    MachineState *ms = MACHINE(qdev_get_machine());
     int max_vm_pa_size;
+    int vm_type;
 
     kvmfd = qemu_open_old("/dev/kvm", O_RDWR);
     if (kvmfd < 0) {
@@ -118,8 +120,10 @@ bool kvm_arm_create_scratch_host_vcpu(int *fdarray,
     if (max_vm_pa_size < 0) {
         max_vm_pa_size = 0;
     }
+
+    vm_type = (ms->cgs ? KVM_VM_TYPE_ARM_REALM : KVM_VM_TYPE_ARM_NORMAL);
     do {
-        vmfd = ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size);
+        vmfd = ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size | vm_type);
     } while (vmfd == -1 && errno == EINTR);
     if (vmfd < 0) {
         goto err;
-- 
2.43.0