From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 8 Jan 2018 20:46:53 +0300 From: "Kirill A. Shutemov" To: Ingo Molnar Cc: Mike Galbraith , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Andrew Morton , Andy Lutomirski , Borislav Petkov , Cyrill Gorcunov , Linus Torvalds , Peter Zijlstra , Thomas Gleixner , linux-mm@kvack.org Subject: Re: [PATCH 4.14 023/159] mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y Message-ID: <20180108174653.7muglyihpngxp5tl@black.fi.intel.com> References: <20171222084623.668990192@linuxfoundation.org> <20171222084625.007160464@linuxfoundation.org> <1515302062.6507.18.camel@gmx.de> <20180108160444.2ol4fvgqbxnjmlpg@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180108160444.2ol4fvgqbxnjmlpg@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org