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vmm: cpu: Warn if the guest is trying to access unregistered IO ranges

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Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz
2020-09-04 08:42:33 +02:00
committed by Sebastien Boeuf
parent 7f2ee1f984
commit e5ce6dc43c
2 changed files with 42 additions and 26 deletions
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24
vmm/src/cpu.rs
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@@ -321,7 +321,11 @@ impl Vcpu {
Ok(run) => match run {
#[cfg(target_arch = "x86_64")]
VmExit::IoIn(addr, data) => {
self.io_bus.read(u64::from(addr), data);
if let Err(e) = self.io_bus.read(u64::from(addr), data) {
if let devices::BusError::MissingAddressRange = e {
warn!("Guest PIO read to unregistered address 0x{:x}", addr);
}
}
Ok(true)
}
#[cfg(target_arch = "x86_64")]
@@ -329,15 +333,27 @@ impl Vcpu {
if addr == DEBUG_IOPORT && data.len() == 1 {
self.log_debug_ioport(data[0]);
}
self.io_bus.write(u64::from(addr), data);
if let Err(e) = self.io_bus.write(u64::from(addr), data) {
if let devices::BusError::MissingAddressRange = e {
warn!("Guest PIO write to unregistered address 0x{:x}", addr);
}
}
Ok(true)
}
VmExit::MmioRead(addr, data) => {
self.mmio_bus.read(addr as u64, data);
if let Err(e) = self.mmio_bus.read(addr as u64, data) {
if let devices::BusError::MissingAddressRange = e {
warn!("Guest MMIO read to unregistered address 0x{:x}", addr);
}
}
Ok(true)
}
VmExit::MmioWrite(addr, data) => {
self.mmio_bus.write(addr as u64, data);
if let Err(e) = self.mmio_bus.write(addr as u64, data) {
if let devices::BusError::MissingAddressRange = e {
warn!("Guest MMIO write to unregistered address 0x{:x}", addr);
}
}
Ok(true)
}
#[cfg(target_arch = "x86_64")]