fix(vmm): simplify vcpus_handles dereferencing in process_uffd_socket

Get rid of the expect by using indexing.

Signed-off-by: Nikita Kalyazin <[email protected]>

Author: kalyazin

src/vmm/src/builder.rs

@@ -57,7 +57,7 @@ use crate::vmm_config::instance_info::InstanceInfo;
 use crate::vmm_config::machine_config::MachineConfigError;
 use crate::vmm_config::snapshot::{LoadSnapshotParams, MemBackendType};
 use crate::vstate::kvm::{Kvm, KvmError};
-use crate::vstate::memory::{MaybeBounce, create_memfd, MemoryError};
+use crate::vstate::memory::{MaybeBounce, MemoryError, create_memfd};
 #[cfg(target_arch = "aarch64")]
 use crate::vstate::resources::ResourceAllocator;
 use crate::vstate::vcpu::VcpuError;

src/vmm/src/lib.rs

@@ -776,11 +776,7 @@ impl Vmm {
                 match result {
                     Ok(fault_reply) => {
                         let vcpu = fault_reply.vcpu.expect("vCPU must be set");
-
-                        self.vcpus_handles
-                            .get(vcpu as usize)
-                            .expect("Invalid vcpu index")
-                            .send_userfault_resolved();
+                        self.vcpus_handles[vcpu as usize].send_userfault_resolved();
 
                         total_consumed = parser.byte_offset();
                     }