[GabrielePicco]

Summary

• align the loader-v4/runtime path with the 4.0 Solana stack and upstream solana-sbpf 0.14.4
• keep the MagicBlock transaction-context extensions available on the updated dependency path
• adapt SVM call sites for the 4.0 transaction-context and program-cache APIs

Validation

• cargo check -p solana-svm
• local validator clone/finalize check against MagicBlock devnet remotes succeeded with LoaderV4 success

Summary by CodeRabbit

• Chores

  • Updated workspace dependencies to Solana/Agave 4.0 ecosystem releases, including compute budget, loader, and system program crates.
  • Bumped SBPF virtual machine and transaction processing libraries to newer versions.

• Refactor

  • Reorganized internal transaction context and instruction handling for improved modularity.

• Tests

  • Updated integration tests to align with dependency and API changes.

[chatgpt-codex-connector]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 1dba59fd-911d-431a-84ce-fe65bed91a22

📥 Commits

Reviewing files that changed from the base of the PR and between f4d9b86 and c96e229.

📒 Files selected for processing (2)

• .github/workflows/cargo-test.yml
• Cargo.toml

Walkthrough

Upgrades all Solana/Agave workspace crates from version 3.1 to 4.0, restructures the transaction-context crate with new public modules and a split InstructionTrace tuple type, extends TransactionContext::new with a new parameter, and adapts transaction_processor and supporting SVM files to match the updated API surface.

Changes

Solana/Agave 4.0 upgrade

Layer / File(s)	Summary
Workspace and crate version bumps Cargo.toml, transaction-context/Cargo.toml	All Solana/Agave workspace dependencies are bumped from 3.1 to 4.0 (and solana-sbpf to 0.14.4). solana-program-runtime switches from a local path to the published 4.0 crate and its [patch.crates-io] override is removed. transaction-context/Cargo.toml pins its version to "4.0.0".
New transaction-context public API transaction-context/src/lib.rs	Adds public instruction, instruction_accounts, and transaction submodules. Defines transaction::InstructionTrace<'ix_data> as a 3-tuple of parallel vectors. TransactionContext::new gains a _number_of_top_level_instructions parameter. Adds get_current_instruction_index, configure_instruction_at_index, and configure_top_level_instruction_for_tests. take_instruction_trace returns the new tuple type.
transaction_processor core adaptation svm/src/transaction_processor.rs	Updates imports to solana_transaction_context::transaction paths. TransactionContext::new in execute_loaded_transaction receives tx.num_instructions(). deconstruct_transaction is refactored to consume the 3-tuple trace. replenish_program_cache's missing-program entries are extended to a (Pubkey, ProgramCacheMatchCriteria, u64) 3-tuple carrying last_modification_slot, propagated through the cooperative-loading closure into finish_cooperative_loading_task.
Import path fixes across SVM files svm/src/transaction_commit_result.rs, svm/src/transaction_execution_result.rs, svm/src/rent_calculator.rs, svm/src/transaction_account_state_info.rs	TransactionReturnData import is updated to the solana_transaction_context::transaction submodule path in two files. rent_calculator.rs reorders imports; transaction_account_state_info.rs imports TransactionContext from the new submodule path.
Test call-site updates svm/src/account_loader.rs, svm/src/message_processor.rs, svm/src/transaction_account_state_info.rs, svm/src/transaction_processor.rs, svm/tests/integration_test.rs, svm/tests/mock_bank.rs	All TransactionContext::new test call sites gain the new trailing argument. Integration tests add SVMStaticMessage, pass EXECUTION_SLOT to global_program_cache.merge, and switch to direct program_instructions_iter() method calls. mock_bank.rs adds allow_memory_region_zero: false to the loader Config.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: upgrading dependencies to support sBPF v3 loader programs via Solana 4.0 stack alignment.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/sbpf-v3-loader-compat

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 7912594f63

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[GabrielePicco]

Closing in favour of magicblock-labs/magicblock-validator#1346