On Tue, 25 Jun 2024 16:37:17 -0700 Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx> wrote: > MTE can be supported on ram based filesystem. It is supported on tmpfs. > There is use case to use MTE on hugetlbfs as well, adding MTE support. > > --- a/fs/hugetlbfs/inode.c > +++ b/fs/hugetlbfs/inode.c > @@ -110,7 +110,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma) > * way when do_mmap unwinds (may be important on powerpc > * and ia64). > */ > - vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND); > + vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND | VM_MTE_ALLOWED); > vma->vm_ops = &hugetlb_vm_ops; > > ret = seal_check_write(info->seals, vma); How thoroughly has this been tested? Can we expect normal linux-next testing to exercise this, or must testers make special arangements to get the coverage?
