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vm-device, vmm: Wait for barrier if one is returned

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Wait for the barrier if one is provided by the result of the MMIO and
PIO write.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2020-12-04 10:17:51 +00:00
parent 1fc6d50f3e
commit a8643dc523
2 changed files with 28 additions and 12 deletions
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vmm/src/vm.rs
+24 -8
View File
@@ -400,11 +400,19 @@ impl VmmOps for VmOps {
}
fn mmio_write(&self, addr: u64, data: &[u8]) -> hypervisor::vm::Result<()> {
if let Err(e) = self.mmio_bus.write(addr, data) {
if let vm_device::BusError::MissingAddressRange = e {
warn!("Guest MMIO write to unregistered address 0x{:x}", addr);
match self.mmio_bus.write(addr, data) {
Err(e) => {
if let vm_device::BusError::MissingAddressRange = e {
warn!("Guest MMIO write to unregistered address 0x{:x}", addr);
}
}
}
Ok(Some(barrier)) => {
info!("Waiting for barrier");
barrier.wait();
info!("Barrier released");
}
_ => {}
};
Ok(())
}
@@ -425,11 +433,19 @@ impl VmmOps for VmOps {
return Ok(());
}
if let Err(e) = self.io_bus.write(addr, data) {
if let vm_device::BusError::MissingAddressRange = e {
warn!("Guest PIO write to unregistered address 0x{:x}", addr);
match self.io_bus.write(addr, data) {
Err(e) => {
if let vm_device::BusError::MissingAddressRange = e {
warn!("Guest PIO write to unregistered address 0x{:x}", addr);
}
}
}
Ok(Some(barrier)) => {
info!("Waiting for barrier");
barrier.wait();
info!("Barrier released");
}
_ => {}
};
Ok(())
}
}