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Linux Foundation Announces "LinuxBoot" To Replace Some Firmware With Linux Code

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  • #31
    Originally posted by starshipeleven View Post
    That said, can a kernel without an initramfs kexec another kernel? Does it not need the kexec tool at the very least? I'm sure it can be patched to do whatever, but as-is?
    It's been a long time since I read about it on LWN but, as I remember, all the kexec machinery lives in the kernel and the kexec command is just a wrapper around the syscall it exposes to trigger it.

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    • #32
      Originally posted by starshipeleven View Post
      With stock firmware their server needs like a minute and a half to complete boot (most of the time is spent in firmware stage, UEFI). They don't really care about a few seconds more or less when UEFI on servers sucks so hard on its own. The main goal currently is to replace the firmware successfully, optimizations can come later.

      That said, can a kernel without an initramfs kexec another kernel? Does it not need the kexec tool at the very least? I'm sure it can be patched to do whatever, but as-is?
      sounds hey would have been better off with "BIOS". Decent UEFI boots within seconds..

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      • #33
        Originally posted by cj.wijtmans View Post
        sounds hey would have been better off with "BIOS". Decent UEFI boots within seconds..
        Not on servers. Most serious servers I know take minutes to start up. BIOS was better on some, but stil a long time to boot.

        Also some third party confirms that:
        https://serverfault.com/questions/30...ast-uefi-to-os (5 minutes)
        https://blog.workinghardinit.work/20...es-boot-times/ (BIOS took 3 minutes, UEFI on a similar server took 2 minutes)
        Last edited by starshipeleven; 31 January 2018, 08:03 AM.

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        • #34
          They just published an article about LinuxBoot on Linux Journal. http://www.linuxjournal.com/content/...ight-linuxboot

          It was written in large part by Ron Minnich, and is a good primer on what LinuxBoot is and wants to become. also Michael

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