@@ -18,6 +18,7 @@
#include "qemu/error-report.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
+#include "sysemu/kvm_int.h"
#include "kvm_arm.h"
#include "cpu.h"
#include "trace.h"
@@ -162,6 +163,15 @@ void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
env->features = arm_host_cpu_features.features;
}
+int kvm_arm_get_max_vm_ipa_size(MachineState *ms)
+{
+ KVMState *s = KVM_STATE(ms->accelerator);
+ int ret;
+
+ ret = kvm_check_extension(s, KVM_CAP_ARM_VM_IPA_SIZE);
+ return ret > 0 ? ret : 40;
+}
+
int kvm_arch_init(MachineState *ms, KVMState *s)
{
/* For ARM interrupt delivery is always asynchronous,
@@ -207,6 +207,14 @@ bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf);
*/
void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu);
+/**
+ * kvm_arm_get_max_vm_ipa_size - Returns the number of bits in the
+ * IPA address space supported by KVM
+ *
+ * @ms: Machine state handle
+ */
+int kvm_arm_get_max_vm_ipa_size(MachineState *ms);
+
/**
* kvm_arm_sync_mpstate_to_kvm
* @cpu: ARMCPU
@@ -239,6 +247,11 @@ static inline void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
cpu->host_cpu_probe_failed = true;
}
+static inline int kvm_arm_get_max_vm_ipa_size(MachineState *ms)
+{
+ return -ENOENT;
+}
+
static inline int kvm_arm_vgic_probe(void)
{
return 0;
Add the kvm_arm_get_max_vm_ipa_size() helper that returns the number of bits in the IPA address space supported by KVM. This capability needs to be known to create the VM with a specific IPA max size (kvm_type passed along KVM_CREATE_VM ioctl. Signed-off-by: Eric Auger <eric.auger@redhat.com> --- v6 -> v7: - s/kvm_arm_get_max_vm_phys_shift/kvm_arm_get_max_vm_ipa_size - reword the comment v4 -> v5: - return 40 if the host does not support the capability v3 -> v4: - s/s/ms in kvm_arm_get_max_vm_phys_shift function comment - check KVM_CAP_ARM_VM_IPA_SIZE extension v1 -> v2: - put this in ARM specific code --- target/arm/kvm.c | 10 ++++++++++ target/arm/kvm_arm.h | 13 +++++++++++++ 2 files changed, 23 insertions(+)