* Peter Zijlstra <pet...@infradead.org> wrote: > On Sat, Feb 17, 2018 at 11:26:16AM +0100, Ingo Molnar wrote: > > Note that PeterZ was struggling with intermittent boot hangs yesterday as > > well, > > which hangs came and went during severeal (fruitless) bisection attempts. > > Then at > > a certain point the hangs went away altogether. > > > > The symptoms for both his and your hangs are consistent with an alignment > > dependent bug. > > Mine would consistently hang right after > > "Freeing SMP alternatives memory: 44K" > > At one point I bisected it to commit: > > a06cc94f3f8d ("x86/build: Drop superfluous ALIGN from the linker script")
So, just to make sure this commit had no effect: I cannot really see anything wrong with that commit, it does a single substantial change, which is to remove this explicit alignment: . = ALIGN(8); TEXT_TEXT which seems fine to me, since it expanded to: . = ALIGN(8); ALIGN_FUNCTION(); \ ... which expanded to: . = ALIGN(8); . = ALIGN(8); ... ... which duplication the commit removed. ... where all the relevant defitions of TEXT_TEXT and ALIGN_FUNCTION are unconditional and not overriden anywhere for arch/x86 builds. I.e. the commit is a NOP AFAICS. Thanks, Ingo