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vm-allocator: Align address at allocation time

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There is alignment support for AddressAllocator but there are occations
that the alignment is known only when we call allocate(). One example
is PCI BAR which is natually aligned, means for which we have to align
the base address to its size.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
This commit is contained in:
Chao Peng
2019-07-03 19:40:04 +00:00
committed by Sebastien Boeuf
parent af7cd74e04
commit 96fb38a5aa
4 changed files with 111 additions and 75 deletions
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4
vm-virtio/src/transport/pci_device.rs
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@@ -451,7 +451,7 @@ impl PciDevice for VirtioPciDevice {
// Allocate the virtio-pci capability BAR.
// See http://docs.oasis-open.org/virtio/virtio/v1.0/cs04/virtio-v1.0-cs04.html#x1-740004
let virtio_pci_bar_addr = allocator
.allocate_mmio_addresses(None, CAPABILITY_BAR_SIZE)
.allocate_mmio_addresses(None, CAPABILITY_BAR_SIZE, None)
.ok_or(PciDeviceError::IoAllocationFailed(CAPABILITY_BAR_SIZE))?;
let config = PciBarConfiguration::default()
.set_register_index(0)
@@ -474,7 +474,7 @@ impl PciDevice for VirtioPciDevice {
// Allocate the device specific BARs.
for config in self.device.get_device_bars() {
let device_bar_addr = allocator
.allocate_mmio_addresses(None, config.get_size())
.allocate_mmio_addresses(None, config.get_size(), None)
.ok_or_else(|| PciDeviceError::IoAllocationFailed(config.get_size()))?;
config.set_address(device_bar_addr.raw_value());
let _device_bar = self.configuration.add_pci_bar(&config).map_err(|e| {