Linux 5.7 Git Restores The Ability To EFI Boot Following Fallout In 5.7-rc1
Written by Michael Larabel in Linux Kernel on 16 April 2020 at 08:37 AM EDT. 8 Comments
LINUX KERNEL --
If you tried out Linux 5.7-rc1 at the start of the week you may have found your system unbootable if using EFI... Fortunately, those EFI fixes have now been merged several days later.

Linux 5.7-rc1 shipped with seemingly botched EFI support, at least from my testing every x86_64 EFI system using the GRUB boot-loader yielded a failed boot.

There have been fixes floating around in patch form while finally on Wednesday evening Linus Torvalds merged the urgent EFI fixes that includes "the boot failure regression caused by the BSS section not being cleared by the loaders." Those EFI fixes had been available on the mailing list since last Thursday but did not get pulled in time for Linux 5.7-rc1 or up until last night for that matter.


In any case, trying the latest Linux 5.7 Git as of this morning now yields booting systems on all of the AMD/Intel platforms that were failing earlier this week. Onwards to benchmarking. Those with extra time on their hands as a result of coronavirus social distancing can try the daily builds of Linux 5.7 on Ubuntu quite easily via this archive.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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