> On Aug 18, 2022, at 3:42 PM, Song Liu <song@xxxxxxxxxx> wrote: > > This set is a prototype that allows dynamic kernel text (modules, bpf > programs, various trampolines, etc.) to share huge pages. The idea is > similar to Peter's suggestion in [1]. Please refer to each patch for > more detais. > > The ultimate goal is to only host kernel text in 2MB pages (for x86_64). > > Please share your comments on this. > > Thanks! > > [1] https://lore.kernel.org/bpf/Ys6cWUMHO8XwyYgr@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ Hi Peter, Could you please share your feedback on this? Thanks, Song PS: I guess vger dropped my patch again. :( The set is also available at https://git.kernel.org/pub/scm/linux/kernel/git/song/linux.git branch vmalloc_exec. > > Song Liu (5): > vmalloc: introduce vmalloc_exec and vfree_exec > bpf: use vmalloc_exec > modules, x86: use vmalloc_exec for module core > vmalloc_exec: share a huge page with kernel text > vmalloc: vfree_exec: free unused vm_struct > > arch/x86/Kconfig | 1 + > arch/x86/kernel/alternative.c | 30 ++++- > arch/x86/kernel/module.c | 1 + > arch/x86/mm/init_64.c | 3 +- > include/linux/vmalloc.h | 16 +-- > kernel/bpf/core.c | 155 ++------------------------ > kernel/module/main.c | 23 ++-- > kernel/module/strict_rwx.c | 3 - > kernel/trace/ftrace.c | 3 +- > mm/nommu.c | 7 ++ > mm/vmalloc.c | 200 +++++++++++++++++++++++++++++----- > 11 files changed, 239 insertions(+), 203 deletions(-) > > -- > 2.30.2
