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hypervisor: provide a generic IrqRoutingEntry structure

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu
2022-07-14 18:59:13 +00:00
committed by Liu Wei
parent 2de7121680
commit d20f647b32
3 changed files with 76 additions and 25 deletions
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44
hypervisor/src/mshv/mod.rs
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@@ -23,8 +23,8 @@ use vm::DataMatch;
pub mod x86_64;
use crate::device;
use crate::{
ClockData, CpuState, IoEventAddress, MpState, UserMemoryRegion, USER_MEMORY_REGION_EXECUTE,
USER_MEMORY_REGION_READ, USER_MEMORY_REGION_WRITE,
ClockData, CpuState, IoEventAddress, IrqRoutingEntry, MpState, UserMemoryRegion,
USER_MEMORY_REGION_EXECUTE, USER_MEMORY_REGION_READ, USER_MEMORY_REGION_WRITE,
};
use vmm_sys_util::eventfd::EventFd;
#[cfg(target_arch = "x86_64")]
@@ -44,8 +44,7 @@ const DIRTY_BITMAP_SET_DIRTY: u64 = 0x8;
///
pub use {
mshv_bindings::mshv_create_device as CreateDevice,
mshv_bindings::mshv_device_attr as DeviceAttr,
mshv_bindings::mshv_msi_routing_entry as IrqRoutingEntry, mshv_ioctls::DeviceFd,
mshv_bindings::mshv_device_attr as DeviceAttr, mshv_ioctls::DeviceFd,
};
pub const PAGE_SHIFT: usize = 12;
@@ -131,6 +130,23 @@ impl From<CpuState> for VcpuMshvState {
}
}
impl From<mshv_msi_routing_entry> for IrqRoutingEntry {
fn from(s: mshv_msi_routing_entry) -> Self {
IrqRoutingEntry::Mshv(s)
}
}
impl From<IrqRoutingEntry> for mshv_msi_routing_entry {
fn from(e: IrqRoutingEntry) -> Self {
match e {
IrqRoutingEntry::Mshv(e) => e,
/* Needed in case other hypervisors are enabled */
#[allow(unreachable_patterns)]
_ => panic!("IrqRoutingEntry is not valid"),
}
}
}
struct MshvDirtyLogSlot {
guest_pfn: u64,
memory_size: u64,
@@ -1074,18 +1090,15 @@ impl vm::Vm for MshvVm {
///
/// Constructs a routing entry
///
fn make_routing_entry(
&self,
gsi: u32,
config: &InterruptSourceConfig,
) -> mshv_msi_routing_entry {
fn make_routing_entry(&self, gsi: u32, config: &InterruptSourceConfig) -> IrqRoutingEntry {
match config {
InterruptSourceConfig::MsiIrq(cfg) => mshv_msi_routing_entry {
gsi,
address_lo: cfg.low_addr,
address_hi: cfg.high_addr,
data: cfg.data,
},
}
.into(),
_ => {
unreachable!()
}
@@ -1097,13 +1110,22 @@ impl vm::Vm for MshvVm {
vec_with_array_field::<mshv_msi_routing, mshv_msi_routing_entry>(entries.len());
msi_routing[0].nr = entries.len() as u32;
let entries: Vec<mshv_msi_routing_entry> = entries
.iter()
.map(|entry| match entry {
IrqRoutingEntry::Mshv(e) => *e,
#[allow(unreachable_patterns)]
_ => panic!("IrqRoutingEntry type is wrong"),
})
.collect();
// SAFETY: msi_routing initialized with entries.len() and now it is being turned into
// entries_slice with entries.len() again. It is guaranteed to be large enough to hold
// everything from entries.
unsafe {
let entries_slice: &mut [mshv_msi_routing_entry] =
msi_routing[0].entries.as_mut_slice(entries.len());
entries_slice.copy_from_slice(entries);
entries_slice.copy_from_slice(&entries);
}
self.fd