On Mon, Apr 11, 2022 at 04:18:05PM -0700, Song Liu wrote: > Changes v1 => v2: > 1. Add vmalloc_huge(). (Christoph Hellwig) > 2. Add module_alloc_huge(). (Christoph Hellwig) > 3. Add Fixes tag and Link tag. (Thorsten Leemhuis) > > Enabling HAVE_ARCH_HUGE_VMALLOC on x86_64 and use it for bpf_prog_pack has > caused some issues [1], as many users of vmalloc are not yet ready to > handle huge pages. To enable a more smooth transition to use huge page > backed vmalloc memory, this set replaces VM_NO_HUGE_VMAP flag with an new > opt-in flag, VM_ALLOW_HUGE_VMAP. More discussions about this topic can be > found at [2]. > > Patch 1 removes VM_NO_HUGE_VMAP and adds VM_ALLOW_HUGE_VMAP. > Patch 2 uses VM_ALLOW_HUGE_VMAP in bpf_prog_pack. > > [1] https://lore.kernel.org/lkml/20220204185742.271030-1-song@xxxxxxxxxx/ > [2] https://lore.kernel.org/linux-mm/20220330225642.1163897-1-song@xxxxxxxxxx/ > > Song Liu (3): > vmalloc: replace VM_NO_HUGE_VMAP with VM_ALLOW_HUGE_VMAP > module: introduce module_alloc_huge > bpf: use vmalloc with VM_ALLOW_HUGE_VMAP for bpf_prog_pack > > arch/Kconfig | 6 ++---- > arch/powerpc/kernel/module.c | 2 +- > arch/s390/kvm/pv.c | 2 +- > arch/x86/kernel/module.c | 21 +++++++++++++++++++ > include/linux/moduleloader.h | 5 +++++ > include/linux/vmalloc.h | 4 ++-- > kernel/bpf/core.c | 9 +++++---- > kernel/module.c | 8 ++++++++ Please use modules-next [0] as that has queued up changes which change kernel/module.c quite a bit. [0] https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=modules-next Luis
