On Thu, Dec 05, 2019 at 06:55:45PM +0800, Dave Young wrote: > > esrt: Unsupported ESRT version 2904149718861218184. > > > > The ESRT memory stays in EFI boot services data, and it was reserved > > in kernel via efi_mem_reserve(). The initial purpose of the reservation > > is to reuse the EFI boot services data across kexec reboot. For example > > the BGRT image data and some ESRT memory like Michael reported. > > > > But although the memory is reserved it is not updated in the X86 E820 table, > > and kexec_file_load() iterates system RAM in the IO resource list to find places > > for kernel, initramfs and other stuff. In Michael's case the kexec loaded > > initramfs overwrote the ESRT memory and then the failure happened. > > > > Since kexec_file_load() depends on the E820 table being updated, just fix this > > by updating the reserved EFI boot services memory as reserved type in E820. > Thanks for the amending, also thank all for the review and test. Same from me, particularly everyone's patience with my haphazard guesswork around an area I clearly know nothing about. :) -- Thanks, Michael
