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This imports credentials also via SMBIOS' "OEM vendor string" section, similar to the existing import logic from fw_cfg. Functionality-wise this is very similar to the existing fw_cfg logic, both of which are easily settable on the qemu command line. Pros and cons of each: SMBIOS OEM vendor strings: - pro: fast, because memory mapped - pro: somewhat VMM independent, at least in theory - pro: qemu upstream sees this as the future - pro: no additional kernel module needed - con: strings only, thus binary data is base64 encoded fw_cfg: - pro: has been supported for longer in qemu - pro: supports binary data - con: slow, because IO port based - con: only qemu - con: requires qemu_fw_cfg.ko kernel module - con: qemu upstream sees this as legacy
