Implement MSHV aarch64 backend - #1626
Draft
cshung wants to merge 2 commits into
Draft
Conversation
cshung
added
the
kind/enhancement
Add a full VirtualMachine trait implementation for MSHV on aarch64, replacing the previous stub that returned false/unimplemented. Key changes: - mshv/aarch64.rs: Complete implementation including VM creation, memory mapping, vcpu run loop with MMIO-based I/O dispatch, general/FPU/special register access via hv_register_assoc, and vcpu reset support. - hyperlight_vm/aarch64.rs: Wire up MshvVm::new() so MSHV is used when detected (previously returned NoHypervisorFound). - memory_region.rs: Implement TryFrom<hv_arm64_memory_intercept_message> for MemoryRegionFlags using intercept_access_type field. The implementation mirrors the KVM aarch64 backend's I/O page pattern (MMIO writes to the I/O page GPA are interpreted as port I/O) and follows MSHV x86_64 patterns for partition creation and register access. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: cshung <3410332+cshung@users.noreply.github.com>
Configure the GIC, decode MMIO writes, preserve register state, and rebuild the partition during restore. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: cshung <3410332+cshung@users.noreply.github.com>
cshung
force-pushed
the
cshung/mshv-aarch64
branch
from
July 31, 2026 16:13
b34cc5d to
fb92ede
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Implements the VirtualMachine trait for MSHV on aarch64, replacing the previous stub.
Changes
Design
Testing