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by 0x0
4236 days ago
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True, but if it overruns a buffer, it still needs to maintain a valid SCSI/ATAPI/whatever command packet format and submit the packet to the controller with repeatedly increasing block numbers - that's a lot of instructions, while something that clears the entire address space could probably be done in 1-2 assembly instructions (mov rcx, -1; rep stosq) |
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