misc: Bulk upgrade dependencies

In particular update for the vmm-sys-util upgrade and all the other
dependent packages. This requires an updated forked version of
kvm-bindings (due to updated vfio-ioctls) but allowed the removal of our
forked version of kvm-ioctls.

The changes to the API from kvm-ioctls and vmm-sys-util required some
other minor changes to the code.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/Cargo.toml

@@ -27,6 +27,7 @@ event_monitor = { path = "../event_monitor" }
 hypervisor = { path = "../hypervisor" }
 lazy_static = "1.4.0"
 libc = "0.2.86"
+linux-loader = { version = "0.3.0", features = ["elf", "bzimage", "pe"] }
 log = "0.4.14"
 micro_http = { git = "https://github.com/firecracker-microvm/micro-http", branch = "master" }
 net_util = { path = "../net_util" }
@@ -49,10 +50,5 @@ vm-migration = { path = "../vm-migration" }
 vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = { version = ">=0.5.0", features = ["with-serde"] }
 
-
-[dependencies.linux-loader]
-git = "https://github.com/rust-vmm/linux-loader"
-features = ["elf", "bzimage", "pe"]
-
 [dev-dependencies]
 credibility = "0.1.3"

vmm/src/cpu.rs

@@ -1611,7 +1611,8 @@ mod tests {
         let mut msrs = MsrEntries::from_entries(&[MsrEntry {
             index: msr_index::MSR_IA32_MISC_ENABLE,
             ..Default::default()
-        }]);
+        }])
+        .unwrap();
 
         // get_msrs returns the number of msrs that it succeed in reading. We only want to read 1
         // in this test case scenario.