diff mbox series

accel/kvm: check for KVM_CAP_MULTI_ADDRESS_SPACE on vm

Message ID 20241011085933.25760-1-pbonzini@redhat.com
State New
Headers show
Series accel/kvm: check for KVM_CAP_MULTI_ADDRESS_SPACE on vm | expand

Commit Message

Paolo Bonzini Oct. 11, 2024, 8:59 a.m. UTC 
KVM_CAP_MULTI_ADDRESS_SPACE used to be a global capability, but with the
introduction of AMD SEV-SNP confidential VMs, the number of address spaces
can vary by VM type.

Query the extension on the VM level instead of on the KVM level.

Inspired by an analogous patch by Tom Dohrmann.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 accel/kvm/kvm-all.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 8be731cfeed..4287e254df8 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -2618,12 +2618,6 @@  static int kvm_init(MachineState *ms)
         s->nr_slots_max = KVM_MEMSLOTS_NR_MAX_DEFAULT;
     }
 
-    s->nr_as = kvm_check_extension(s, KVM_CAP_MULTI_ADDRESS_SPACE);
-    if (s->nr_as <= 1) {
-        s->nr_as = 1;
-    }
-    s->as = g_new0(struct KVMAs, s->nr_as);
-
     type = find_kvm_machine_type(ms);
     if (type < 0) {
         ret = -EINVAL;
@@ -2637,6 +2631,12 @@  static int kvm_init(MachineState *ms)
 
     s->vmfd = ret;
 
+    s->nr_as = kvm_vm_check_extension(s, KVM_CAP_MULTI_ADDRESS_SPACE);
+    if (s->nr_as <= 1) {
+        s->nr_as = 1;
+    }
+    s->as = g_new0(struct KVMAs, s->nr_as);
+
     /* check the vcpu limits */
     soft_vcpus_limit = kvm_recommended_vcpus(s);
     hard_vcpus_limit = kvm_max_vcpus(s);