On Mon, 2020-04-06 at 10:44 +0200, Ard Biesheuvel wrote: > On Mon, 6 Apr 2020 at 01:18, Arvind Sankar <nivedita@xxxxxxxxxxxx> > wrote: > > On Sun, Apr 05, 2020 at 10:42:46PM +0700, Sergey Shatunov wrote: > > > This patch causes some strange things happens with my laptop. > > > > > > Cold boot crashed in some early initilization logic with message > > > 'Failed to execute /esp/.../linux.efi: Buffer Too Small'. > > > After couple reboots into firmware setup (bios) or hot reboot > > > from other working kernel (without that commit) helps it to boot. > > > During bisecting couple times I saw different message: > > > 'exit_efi() failed; efi_main() failed', but above tricks helps it > > > too. > > Could you please try adding 'efi=no_disable_early_pci_dma' to the > kernel command line? The lack of BSS zeroization may result in that > option to get inadvertently enabled, and it is known to break > exit_boot() on some systems. With 'efi=no_disable_early_pci_dma' it works again.
