€•êŒsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ8/translations/zh_CN/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ8/translations/zh_TW/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ8/translations/it_IT/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ8/translations/ja_JP/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ8/translations/ko_KR/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ8/translations/sp_SP/driver-api/firmware/direct-fs-lookup”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒDirect filesystem lookup”h]”hŒDirect filesystem lookup”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒR/var/lib/git/docbuild/linux/Documentation/driver-api/firmware/direct-fs-lookup.rst”h KubhŒ paragraph”“”)”}”(hX¹Direct filesystem lookup is the most common form of firmware lookup performed by the kernel. The kernel looks for the firmware directly on the root filesystem in the paths documented in the section 'Firmware search paths'. The filesystem lookup is implemented in fw_get_filesystem_firmware(), it uses common core kernel file loader facility kernel_read_file_from_path(). The max path allowed is PATH_MAX -- currently this is 4096 characters.”h]”hX½Direct filesystem lookup is the most common form of firmware lookup performed by the kernel. The kernel looks for the firmware directly on the root filesystem in the paths documented in the section ‘Firmware search paths’. The filesystem lookup is implemented in fw_get_filesystem_firmware(), it uses common core kernel file loader facility kernel_read_file_from_path(). The max path allowed is PATH_MAX -- currently this is 4096 characters.”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒãIt is recommended you keep /lib/firmware paths on your root filesystem, avoid having a separate partition for them in order to avoid possible races with lookups and avoid uses of the custom fallback mechanisms documented below.”h]”hŒãIt is recommended you keep /lib/firmware paths on your root filesystem, avoid having a separate partition for them in order to avoid possible races with lookups and avoid uses of the custom fallback mechanisms documented below.”…””}”(hhÇhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒFirmware and initramfs”h]”hŒFirmware and initramfs”…””}”(hhØhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hhÕhžhhŸh¶h Kubh¸)”}”(hXxDrivers which are built-in to the kernel should have the firmware integrated also as part of the initramfs used to boot the kernel given that otherwise a race is possible with loading the driver and the real rootfs not yet being available. 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