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vmm: Implement GDB event handler to enable --gdb flag

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This commit adds event fds and the event handler to send/receive
requests and responses from the GDB thread. It also adds `--gdb` flag to
enable GDB stub feature.

Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit is contained in:
Akira Moroo
2022-02-20 12:51:34 +09:00
committed by Rob Bradford
parent 23bb629241
commit 2451c4d833
6 changed files with 217 additions and 5 deletions
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vmm/src/vm.rs
+15
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@@ -552,6 +552,7 @@ impl Vm {
vm: Arc<dyn hypervisor::Vm>,
exit_evt: EventFd,
reset_evt: EventFd,
#[cfg(feature = "gdb")] vm_debug_evt: EventFd,
seccomp_action: &SeccompAction,
hypervisor: Arc<dyn hypervisor::Hypervisor>,
activate_evt: EventFd,
@@ -575,6 +576,9 @@ impl Vm {
#[cfg(not(feature = "tdx"))]
let force_iommu = false;
#[cfg(feature = "gdb")]
let stop_on_boot = config.lock().unwrap().gdb;
#[cfg(not(feature = "gdb"))]
let stop_on_boot = false;
let device_manager = DeviceManager::new(
@@ -624,6 +628,8 @@ impl Vm {
vm.clone(),
exit_evt_clone,
reset_evt,
#[cfg(feature = "gdb")]
vm_debug_evt,
hypervisor.clone(),
seccomp_action.clone(),
vm_ops,
@@ -763,6 +769,7 @@ impl Vm {
config: Arc<Mutex<VmConfig>>,
exit_evt: EventFd,
reset_evt: EventFd,
#[cfg(feature = "gdb")] vm_debug_evt: EventFd,
seccomp_action: &SeccompAction,
hypervisor: Arc<dyn hypervisor::Hypervisor>,
activate_evt: EventFd,
@@ -817,6 +824,8 @@ impl Vm {
vm,
exit_evt,
reset_evt,
#[cfg(feature = "gdb")]
vm_debug_evt,
seccomp_action,
hypervisor,
activate_evt,
@@ -840,6 +849,7 @@ impl Vm {
vm_config: Arc<Mutex<VmConfig>>,
exit_evt: EventFd,
reset_evt: EventFd,
#[cfg(feature = "gdb")] vm_debug_evt: EventFd,
source_url: Option<&str>,
prefault: bool,
seccomp_action: &SeccompAction,
@@ -888,6 +898,8 @@ impl Vm {
vm,
exit_evt,
reset_evt,
#[cfg(feature = "gdb")]
vm_debug_evt,
seccomp_action,
hypervisor,
activate_evt,
@@ -900,6 +912,7 @@ impl Vm {
config: Arc<Mutex<VmConfig>>,
exit_evt: EventFd,
reset_evt: EventFd,
#[cfg(feature = "gdb")] vm_debug_evt: EventFd,
seccomp_action: &SeccompAction,
hypervisor: Arc<dyn hypervisor::Hypervisor>,
activate_evt: EventFd,
@@ -939,6 +952,8 @@ impl Vm {
vm,
exit_evt,
reset_evt,
#[cfg(feature = "gdb")]
vm_debug_evt,
seccomp_action,
hypervisor,
activate_evt,