[GIT PULL] UML updates for v6.8-rc1

[Richard Weinberger]

Linus,

The following changes since commit 861deac3b092f37b2c5e6871732f3e11486f7082:

  Linux 6.7-rc7 (2023-12-23 16:25:56 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux.git tags/uml-for-linus-6.8-rc1

for you to fetch changes up to 83aec96c631e0fa75cfe6d6a1b113a32151aaa88:

  um: Mark 32bit syscall helpers as clobbering memory (2024-01-05 16:28:57 +0100)

----------------------------------------------------------------
This pull request contains the following changes for UML:

- Clang coverage support
- Many cleanups from Benjamin Berg
- Various minor fixes

----------------------------------------------------------------
Anton Ivanov (2):
      um: Fix naming clash between UML and scheduler
      um: document arch_futex_atomic_op_inuser

Benjamin Berg (11):
      um: Drop support for hosts without SYSEMU_SINGLESTEP support
      um: Drop NULL check from start_userspace
      um: Make errors to stop ptraced child fatal during startup
      um: Don't use vfprintf() for os_info()
      um: Do not use printk in SIGWINCH helper thread
      um: Reap winch thread if it fails
      um: Do not use printk in userspace trampoline
      um: Always inline stub functions
      um: Rely on PTRACE_SETREGSET to set FS/GS base registers
      um: Remove unused register save/restore functions
      um: Mark 32bit syscall helpers as clobbering memory

Johannes Berg (2):
      um: mmu: remove stub_pages
      um: time-travel: fix time corruption

Michał Winiarski (2):
      arch: um: Add Clang coverage support
      Documentation: kunit: Add clang UML coverage example

Nathan Chancellor (1):
      um: net: Fix return type of uml_net_start_xmit()

Vincent Whitchurch (1):
      um: virt-pci: fix platform map offset

 Documentation/dev-tools/kunit/running_tips.rst |  11 +++
 arch/um/Makefile-skas                          |   5 ++
 arch/um/drivers/chan_user.c                    |  42 +++++----
 arch/um/drivers/line.c                         |  13 +--
 arch/um/drivers/net_kern.c                     |   2 +-
 arch/um/drivers/virt-pci.c                     |   2 +-
 arch/um/include/asm/mmu.h                      |   1 -
 arch/um/include/asm/processor-generic.h        |   1 -
 arch/um/include/shared/kern_util.h             |   5 +-
 arch/um/include/shared/os.h                    |   3 -
 arch/um/include/shared/ptrace_user.h           |  41 ---------
 arch/um/include/shared/registers.h             |   2 -
 arch/um/kernel/process.c                       |  14 +--
 arch/um/kernel/ptrace.c                        |   2 -
 arch/um/kernel/signal.c                        |  12 ---
 arch/um/kernel/skas/uaccess.c                  |   4 +-
 arch/um/kernel/time.c                          |  32 +++++--
 arch/um/os-Linux/helper.c                      |   6 +-
 arch/um/os-Linux/registers.c                   |  20 -----
 arch/um/os-Linux/skas/process.c                | 117 ++++++++-----------------
 arch/um/os-Linux/start_up.c                    | 111 ++++-------------------
 arch/um/os-Linux/util.c                        |  19 +++-
 arch/x86/um/asm/elf.h                          |   4 +-
 arch/x86/um/asm/processor_64.h                 |   3 -
 arch/x86/um/os-Linux/Makefile                  |   1 -
 arch/x86/um/os-Linux/prctl.c                   |  12 ---
 arch/x86/um/ptrace_32.c                        |  24 -----
 arch/x86/um/ptrace_64.c                        |  26 ------
 arch/x86/um/shared/sysdep/ptrace_32.h          |   4 -
 arch/x86/um/shared/sysdep/ptrace_user.h        |  12 ++-
 arch/x86/um/shared/sysdep/stub_32.h            |  39 +++++----
 arch/x86/um/shared/sysdep/stub_64.h            |  17 ++--
 arch/x86/um/syscalls_64.c                      |  62 +++----------
 arch/x86/um/tls_64.c                           |   2 +-
 34 files changed, 212 insertions(+), 459 deletions(-)
 delete mode 100644 arch/x86/um/os-Linux/prctl.c