Method read_bar

pci/src/vfio.rs:1225–1245

(&mut self, base: u64, offset: u64, data: &mut [u8])

    }

    pub(crate) fn read_bar(&mut self, base: u64, offset: u64, data: &mut [u8]) {
        let addr = base + offset;
        if let Some(region) = self.find_region(addr) {
            let offset = addr - region.start.raw_value();

            if self.interrupt.msix_table_accessed(region.index, offset) {
                self.interrupt.msix_read_table(offset, data);
            } else {
                self.vfio_wrapper.region_read(region.index, offset, data);
            }
        }

        // INTx EOI
        // The guest reading from the BAR potentially means the interrupt has
        // been received and can be acknowledged.
        if self.interrupt.intx_in_use()
            && let Err(e) = self.vfio_wrapper.unmask_irq(VFIO_PCI_INTX_IRQ_INDEX)
        {
            error!("Failed unmasking INTx IRQ: {e}");
        }
    }

    pub(crate) fn write_bar(
        &mut self,