On Mon, Jan 08, 2018 at 04:04:44PM +0000, Ingo Molnar wrote: > > hi Kirill, > > As Mike reported it below, your 5-level paging related upstream commit > 83e3c48729d9 and all its followup fixes: > > 83e3c48729d9: mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y > 629a359bdb0e: mm/sparsemem: Fix ARM64 boot crash when CONFIG_SPARSEMEM_EXTREME=y > d09cfbbfa0f7: mm/sparse.c: wrong allocation for mem_section > > ... still breaks kexec - and that now regresses -stable as well. > > Given that 5-level paging now syntactically depends on having this commit, if we > fully revert this then we'll have to disable 5-level paging as well. Urghh.. Sorry about this. I'm on vacation right now. Give me a day to sort this out. -- Kirill A. Shutemov