[PATCH v16 11/11] RFC: fw_cfg: do DMA read operation

Modify fw_cfg_read_blob() to use DMA if the device supports it. Return errors, because the operation may fail. So far, only one call in fw_cfg_register_dir_entries() is using kmalloc'ed buf and is thus clearly eligible to DMA read. Initially, I didn't implement DMA read to speed up boot time,

[PATCH v16 11/11] RFC: fw_cfg: do DMA read operation

Modify fw_cfg_read_blob() to use DMA if the device supports it. Return errors, because the operation may fail. So far, only one call in fw_cfg_register_dir_entries() is using kmalloc'ed buf and is thus clearly eligible to DMA read. Initially, I didn't implement DMA read to speed up boot time,