axvm 0.5.24

Virtual Machine resource management crate for ArceOS's hypervisor variant.
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//! Architecture-neutral vCPU contexts and normalized runtime actions.

use axvm_types::{AccessWidth, GuestPhysAddr};

use crate::StopReason;

/// Scheduler effects selected after an architecture-local vCPU exit.
#[derive(Debug)]
pub(crate) struct VcpuRunAction {
    pub(crate) waits_for_event: bool,
    pub(crate) stop_reason: Option<StopReason>,
}

/// Result of handling one exit while the vCPU is still bound to the host CPU.
#[derive(Debug)]
pub(crate) enum BoundVcpuExit<D> {
    /// The exit was handled completely; re-enter the guest in the current run slice.
    Continue,
    /// The run slice is complete and can return this scheduler action after unbind.
    Complete(VcpuRunAction),
    /// Finish architecture-local work after unbinding the vCPU.
    Defer(D),
}

#[derive(Clone, Copy, Debug)]
pub(crate) struct MmioReadExit {
    pub(crate) addr: GuestPhysAddr,
    pub(crate) width: AccessWidth,
    pub(crate) reg: usize,
    pub(crate) reg_width: AccessWidth,
    pub(crate) signed_ext: bool,
}

#[derive(Clone, Copy, Debug)]
pub(crate) struct MmioWriteExit {
    pub(crate) addr: GuestPhysAddr,
    pub(crate) width: AccessWidth,
    pub(crate) data: u64,
}

#[derive(Clone, Copy, Debug)]
pub(crate) struct HypercallExit {
    pub(crate) nr: u64,
    pub(crate) args: [u64; 6],
}