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Custom parameters for fhevm-go #31
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dartdart26
suggested changes
Nov 7, 2023
fhevm/interface.go
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| @@ -32,6 +32,7 @@ type EVMEnvironment interface { | |||
| CreateContract2(caller common.Address, code []byte, codeHash common.Hash, gas uint64, value *big.Int, address common.Address) ([]byte, common.Address, uint64, error) | |||
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| GetFhevmData() *FhevmData | |||
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Nit: Maybe we can rename GetFhevmData() to FhevmData() too. Not part of this PR, just noticed.
fhevm/params.go
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| // TODO: The values here are chosen somewhat arbitrarily (at least the 8 bit ones). Also, we don't | ||
| // take into account whether a ciphertext existed (either "current" or "original") for the given handle. | ||
| // Finally, costs are likely to change in the future. | ||
| FheUint8ProtectedStorageSstoreGas uint64 = EvmNetSstoreInitGas + 2000 | ||
| FheUint16ProtectedStorageSstoreGas uint64 = FheUint8ProtectedStorageSstoreGas * 2 | ||
| FheUint32ProtectedStorageSstoreGas uint64 = FheUint16ProtectedStorageSstoreGas * 2 | ||
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| // TODO: We don't take whether the slot is cold or warm into consideration. | ||
| FheUint8ProtectedStorageSloadGas uint64 = ColdSloadCostEIP2929 + 200 | ||
| FheUint16ProtectedStorageSloadGas uint64 = FheUint8ProtectedStorageSloadGas * 2 | ||
| FheUint32ProtectedStorageSloadGas uint64 = FheUint16ProtectedStorageSloadGas * 2 |
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I think we should not remove these. Instead, if they are unused, I think it indicates another issue in that we don't charge for protected storage.
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@dartdart26 restored deleted constants, renamed also |
dartdart26
approved these changes
Nov 8, 2023
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Adds clear api to customize fhevm-go, user needs to provide *FhevmParams struct, defaults exist but can be customized by user
@dartdart26 @youben11