website-struct

Struct: ghcb

Status

Regular

• In 4.4: Absent ⚠️
• In 4.8: Absent ⚠️
• In 4.10: Absent ⚠️
• In 4.13: Absent ⚠️
• In 4.15: Absent ⚠️
• In 4.18: Absent ⚠️
• In 5.0: Absent ⚠️
• In 5.3: Absent ⚠️
• In 5.4: Absent ⚠️
• In 5.8: Absent ⚠️
• In 5.11: ✅

  struct ghcb {
      struct vmcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_1[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 5.13: ✅

  struct ghcb {
      struct vmcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_1[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 5.15: ✅

  struct ghcb {
      struct vmcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_1[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 5.19: ✅

  struct ghcb {
      struct ghcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_1[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 6.2: ✅

  struct ghcb {
      struct ghcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_0xff0[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 6.5: ✅

  struct ghcb {
      struct ghcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_0xff0[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

• In 6.8: ✅

  struct ghcb {
      struct ghcb_save_area save;
      u8 reserved_save[1016];
      u8 shared_buffer[2032];
      u8 reserved_0xff0[10];
      u16 protocol_version;
      u32 ghcb_usage;
  };
  

Arch

• In arm64: Absent ⚠️
• In armhf: Absent ⚠️
• In ppc64el: Absent ⚠️
• In riscv64: Absent ⚠️

Flavor

• In aws: Absent ⚠️
• In azure: Absent ⚠️
• In gcp: Absent ⚠️
• In lowlatency: Absent ⚠️

Differences

Regular

• No changes between 5.11 and 5.13 ✅
• No changes between 5.13 and 5.15 ✅
• Changed between 5.15 and 5.19 ⚠️

  • Field type changed. struct vmcb_save_area save ➡️ struct ghcb_save_area save
• Changed between 5.19 and 6.2 ⚠️

  • Field added. u8 reserved_0xff0[10]
  • Field removed. u8 reserved_1[10]
• No changes between 6.2 and 6.5 ✅
• No changes between 6.5 and 6.8 ✅