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[feature/virtio-mem] Add dummy implementation for virtio-mem #5365

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Merged
merged 10 commits into from
Aug 22, 2025
Merged

[feature/virtio-mem] Add dummy implementation for virtio-mem #5365

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955e3d5
chore(virtio-mem): build CONFIG_VIRTIO_MEM in guest kernels
Manciukic Aug 7, 2025
12ba9e1
chore(devctr): point to virtio-mem artifacts
Manciukic Aug 7, 2025
79ff762
chore(bindgen): add headers for virtio_mem
Manciukic Aug 8, 2025
3f06c26
chore(virtio-mem): create empty virtio/mem module
Manciukic Aug 7, 2025
ed7a6d1
feat(virtio-mem): add to VmmConfig and PUT API
Manciukic Aug 7, 2025
60a4402
test(virtio-mem): add tests for PUT API
Manciukic Aug 7, 2025
cacda0d
feat(virtio-mem): add dummy virtio-mem device
Manciukic Aug 7, 2025
6166de3
test(virtio-mem): add integ test to verify device is detected
Manciukic Aug 7, 2025
21c22fc
feat(virtio-mem): add GET API
Manciukic Aug 12, 2025
6971326
chore(doc): update documentation for new API
Manciukic Aug 19, 2025
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16 changes: 8 additions & 8 deletions src/vmm/src/arch/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,11 @@ pub use aarch64::vm::{ArchVm, ArchVmError, VmState};
pub use aarch64::{
ConfigurationError, arch_memory_regions, configure_system_for_boot, get_kernel_start,
initrd_load_addr, layout::BOOT_DEVICE_MEM_START, layout::CMDLINE_MAX_SIZE,
layout::GSI_LEGACY_END, layout::GSI_LEGACY_NUM, layout::GSI_LEGACY_START, layout::GSI_MSI_END,
layout::GSI_MSI_NUM, layout::GSI_MSI_START, layout::MEM_32BIT_DEVICES_SIZE,
layout::MEM_32BIT_DEVICES_START, layout::MEM_64BIT_DEVICES_SIZE,
layout::MEM_64BIT_DEVICES_START, layout::MMIO32_MEM_SIZE, layout::MMIO32_MEM_START,
layout::PCI_MMCONFIG_SIZE, layout::PCI_MMCONFIG_START,
layout::FIRST_ADDR_PAST_64BITS_MMIO, layout::GSI_LEGACY_END, layout::GSI_LEGACY_NUM,
layout::GSI_LEGACY_START, layout::GSI_MSI_END, layout::GSI_MSI_NUM, layout::GSI_MSI_START,
layout::MEM_32BIT_DEVICES_SIZE, layout::MEM_32BIT_DEVICES_START,
layout::MEM_64BIT_DEVICES_SIZE, layout::MEM_64BIT_DEVICES_START, layout::MMIO32_MEM_SIZE,
layout::MMIO32_MEM_START, layout::PCI_MMCONFIG_SIZE, layout::PCI_MMCONFIG_START,
layout::PCI_MMIO_CONFIG_SIZE_PER_SEGMENT, layout::RTC_MEM_START, layout::SERIAL_MEM_START,
layout::SPI_START, layout::SYSTEM_MEM_SIZE, layout::SYSTEM_MEM_START, load_kernel,
};
Expand All @@ -46,9 +46,9 @@ pub use x86_64::vm::{ArchVm, ArchVmError, VmState};
pub use crate::arch::x86_64::{
ConfigurationError, arch_memory_regions, configure_system_for_boot, get_kernel_start,
initrd_load_addr, layout::APIC_ADDR, layout::BOOT_DEVICE_MEM_START, layout::CMDLINE_MAX_SIZE,
layout::GSI_LEGACY_END, layout::GSI_LEGACY_NUM, layout::GSI_LEGACY_START, layout::GSI_MSI_END,
layout::GSI_MSI_NUM, layout::GSI_MSI_START, layout::IOAPIC_ADDR,
layout::MEM_32BIT_DEVICES_SIZE, layout::MEM_32BIT_DEVICES_START,
layout::FIRST_ADDR_PAST_64BITS_MMIO, layout::GSI_LEGACY_END, layout::GSI_LEGACY_NUM,
layout::GSI_LEGACY_START, layout::GSI_MSI_END, layout::GSI_MSI_NUM, layout::GSI_MSI_START,
layout::IOAPIC_ADDR, layout::MEM_32BIT_DEVICES_SIZE, layout::MEM_32BIT_DEVICES_START,
layout::MEM_64BIT_DEVICES_SIZE, layout::MEM_64BIT_DEVICES_START, layout::MMIO32_MEM_SIZE,
layout::MMIO32_MEM_START, layout::PCI_MMCONFIG_SIZE, layout::PCI_MMCONFIG_START,
layout::PCI_MMIO_CONFIG_SIZE_PER_SEGMENT, layout::SYSTEM_MEM_SIZE, layout::SYSTEM_MEM_START,
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14 changes: 14 additions & 0 deletions src/vmm/src/devices/virtio/mem/mod.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
// Copyright 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

use vm_memory::GuestAddress;

use crate::arch::FIRST_ADDR_PAST_64BITS_MMIO;

pub(crate) const MEM_NUM_QUEUES: usize = 1;

pub(crate) const MEM_QUEUE: usize = 0;

pub const VIRTIO_MEM_DEFAULT_BLOCK_SIZE: usize = 2 << 20; // 2MiB
pub const VIRTIO_MEM_DEFAULT_SLOT_SIZE: usize = 128 << 20; // 128 MiB
pub const VIRTIO_MEM_GUEST_ADDRESS: GuestAddress = GuestAddress(FIRST_ADDR_PAST_64BITS_MMIO); // 512GiB
1 change: 1 addition & 0 deletions src/vmm/src/devices/virtio/mod.rs
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Expand Up @@ -18,6 +18,7 @@ pub mod device;
pub mod generated;
mod iov_deque;
pub mod iovec;
pub mod mem;
pub mod net;
pub mod persist;
pub mod queue;
Expand Down