[v1.14] Expose memory mapping & dirty pages; Make memfile dump optional#8

Draft

bchalios wants to merge 42 commits into

firecracker-v1.14from

firecracker-v1.14-direct-mem

Commits on Apr 14, 2026

Commits on May 6, 2026

feat(memfd): allow using memfd to back guest memory
bchalios
committed

Commits on May 12, 2026

refactor(block): expand ConfigSpace to full virtio-blk layout
kalyazin
committed
refactor(block): add Discard request type and discard segment struct
kalyazin
committed
feat(block): add discard method to FileEngine using fallocate
kalyazin
committed
style(seccomp): fix indentation and trailing whitespace in filter files
kalyazin
committed
feat(seccomp): allow fallocate syscall in vmm thread filter
kalyazin
committed
feat(block): handle VIRTIO_BLK_T_DISCARD requests
kalyazin
committed
chore(snapshot): fix ConfigSpace restore for VIRTIO_BLK_F_DISCARD
kalyazin
committed
feat(block): advertise VIRTIO_BLK_F_DISCARD for non-read-only devices
kalyazin
committed
doc(block): document VIRTIO_BLK_F_DISCARD discard support
kalyazin
committed
test(block): add unit tests for VIRTIO_BLK_F_DISCARD
kalyazin
committed
test(block): add pytest integration tests for VIRTIO_BLK_F_DISCARD
kalyazin
committed
refactor(block): extend ConfigSpace with write-zeroes fields
kalyazin
committed
refactor(block): add WriteZeroes request type and supporting variants
kalyazin
committed
feat(block): add write_zeroes method to FileEngine using fallocate
kalyazin
committed
feat(block): handle VIRTIO_BLK_T_WRITE_ZEROES requests
kalyazin
committed
feat(block): advertise VIRTIO_BLK_F_WRITE_ZEROES for non-read-only devices
kalyazin
committed
test(block): add unit tests for VIRTIO_BLK_F_WRITE_ZEROES
kalyazin
committed
test(block): add pytest integration tests for VIRTIO_BLK_F_WRITE_ZEROES
kalyazin
committed
doc(block): document VIRTIO_BLK_F_WRITE_ZEROES support
kalyazin
committed
feat(balloon): advertise VIRTIO_BALLOON_F_HINT_WAIT_ON_ACK with FPH

kalyazin
and
claude
committed
test(balloon): integration test for WAIT_ON_ACK negotiation

kalyazin
and
claude
committed
docs(balloon): document WAIT_ON_ACK feature

kalyazin
and
claude
committed

Commits on May 18, 2026

fix: saving/restoring async IO engine transport state

Babis Chalios
authored and
kalyazin
committed

Commits on May 21, 2026

fix(tests): fix compilation in integration test

bchalios
authored and
kalyazin
committed
fix(discard_range): require page size alignment for region

bchalios
authored and
kalyazin
committed
fix(memory): punch holes for shared discard ranges

ValentaTomas
authored and
kalyazin
committed