DepSurf

Struct: userfaultfd_ctx

Status

Regular

• In 4.4: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      enum userfaultfd_state state;
      bool released;
      struct mm_struct *mm;
  };
  

• In 4.8: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      enum userfaultfd_state state;
      bool released;
      struct mm_struct *mm;
  };
  

• In 4.10: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      enum userfaultfd_state state;
      bool released;
      struct mm_struct *mm;
  };
  

• In 4.13: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      struct mm_struct *mm;
  };
  

• In 4.15: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      struct mm_struct *mm;
  };
  

• In 4.18: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      atomic_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.0: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.3: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.4: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.8: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.11: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.13: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.15: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      bool released;
      atomic_t mmap_changing;
      struct mm_struct *mm;
  };
  

• In 5.19: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      bool released;
      atomic_t mmap_changing;
      struct mm_struct *mm;
  };
  

• In 6.2: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      bool released;
      atomic_t mmap_changing;
      struct mm_struct *mm;
  };
  

• In 6.5: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      bool released;
      atomic_t mmap_changing;
      struct mm_struct *mm;
  };
  

• In 6.8: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      seqcount_spinlock_t refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      bool released;
      atomic_t mmap_changing;
      struct mm_struct *mm;
  };
  

Arch

• In arm64: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In armhf: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In ppc64el: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In riscv64: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

Flavor

• In aws: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In azure: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In gcp: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

• In lowlatency: ✅

  struct userfaultfd_ctx {
      wait_queue_head_t fault_pending_wqh;
      wait_queue_head_t fault_wqh;
      wait_queue_head_t fd_wqh;
      wait_queue_head_t event_wqh;
      struct seqcount refile_seq;
      refcount_t refcount;
      unsigned int flags;
      unsigned int features;
      enum userfaultfd_state state;
      bool released;
      bool mmap_changing;
      struct mm_struct *mm;
  };
  

Differences

Regular

• No changes between 4.4 and 4.8 ✅
• No changes between 4.8 and 4.10 ✅
• Changed between 4.10 and 4.13 ⚠️

  • Field added. wait_queue_head_t event_wqh
  • Field added. unsigned int features
• No changes between 4.13 and 4.15 ✅
• Changed between 4.15 and 4.18 ⚠️

  • Field added. bool mmap_changing
• Changed between 4.18 and 5.0 ⚠️

  • Field type changed. atomic_t refcount ➡️ refcount_t refcount
• No changes between 5.0 and 5.3 ✅
• No changes between 5.3 and 5.4 ✅
• No changes between 5.4 and 5.8 ✅
• Changed between 5.8 and 5.11 ⚠️

  • Field type changed. struct seqcount refile_seq ➡️ seqcount_spinlock_t refile_seq
• No changes between 5.11 and 5.13 ✅
• Changed between 5.13 and 5.15 ⚠️

  • Field removed. enum userfaultfd_state state
  • Field type changed. bool mmap_changing ➡️ atomic_t mmap_changing
• No changes between 5.15 and 5.19 ✅
• No changes between 5.19 and 6.2 ✅
• No changes between 6.2 and 6.5 ✅
• No changes between 6.5 and 6.8 ✅

Arch

• No changes between amd64 and arm64 ✅
• No changes between amd64 and armhf ✅
• No changes between amd64 and ppc64el ✅
• No changes between amd64 and riscv64 ✅

Flavor

• No changes between generic and aws ✅
• No changes between generic and azure ✅
• No changes between generic and gcp ✅
• No changes between generic and lowlatency ✅