[GIT PULL] UML changes for v5.7-rc1

[Richard Weinberger]

Linus,

The following changes since commit 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e:

  Linux 5.6-rc7 (2020-03-22 18:31:56 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml.git tags/for-linus-5.7-rc1

for you to fetch changes up to 4a7c46247f9c620c0390a15cb00b6ef9576b9c23:

  um: Remove some unnecessary NULL checks in vector_user.c (2020-03-29 23:56:47 +0200)

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

- New mode for time travel, external via virtio
- Fixes for ubd to make sure no requests can get lost
- Fixes for vector networking
- Allow CONFIG_STATIC_LINK only when possible
- Minor cleanups and fixes

----------------------------------------------------------------
Alan Maguire (1):
      um: falloc.h needs to be directly included for older libc

Alex Dewar (1):
      um: Remove some unnecessary NULL checks in vector_user.c

Andy Shevchenko (2):
      um: Don't use console_drivers directly
      hostfs: Use kasprintf() instead of fixed buffer formatting

Brendan Higgins (1):
      um: Make CONFIG_STATIC_LINK actually static

David Gow (1):
      um: Fix overlapping ELF segments when statically linked

Gabriel Krisman Bertazi (2):
      um: ubd: Prevent buffer overrun on command completion
      um: ubd: Retry buffer read on any kind of error

Johannes Berg (6):
      um: Move timer-internal.h to non-shared
      um: time-travel: Rewrite as an event scheduler
      um: virtio: Implement VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS
      um: Implement time-travel=ext
      um: Implement ndelay/udelay in time-travel mode
      um: Implement cpu_relax() as ndelay(1) for time-travel

Krzysztof Kozlowski (1):
      um: Cleanup CONFIG_IOSCHED_CFQ

Leon Romanovsky (2):
      um: Don't overwrite ethtool driver version
      um: Delete never executed timer

Sjoerd Simons (1):
      um: vector: Avoid NULL ptr deference if transport is unset

Wen Yang (1):
      um: Fix len of file in create_pid_file

 arch/um/Kconfig                         |   9 +-
 arch/um/configs/i386_defconfig          |   2 +-
 arch/um/configs/x86_64_defconfig        |   2 +-
 arch/um/drivers/Kconfig                 |   3 +
 arch/um/drivers/net_kern.c              |  13 -
 arch/um/drivers/ubd_kern.c              |  12 +-
 arch/um/drivers/vector_kern.c           |   5 +-
 arch/um/drivers/vector_user.c           |  15 +-
 arch/um/drivers/vhost_user.h            |  12 +-
 arch/um/drivers/virtio_uml.c            | 153 +++++++--
 arch/um/include/asm/Kbuild              |   1 -
 arch/um/include/asm/delay.h             |  30 ++
 arch/um/include/linux/time-internal.h   |  84 +++++
 arch/um/include/shared/os.h             |   1 +
 arch/um/include/shared/timer-internal.h |  76 -----
 arch/um/kernel/kmsg_dump.c              |   9 +-
 arch/um/kernel/process.c                |  39 +--
 arch/um/kernel/skas/syscall.c           |   5 +-
 arch/um/kernel/time.c                   | 538 ++++++++++++++++++++++++++++++--
 arch/um/kernel/uml.lds.S                |   2 +-
 arch/um/os-Linux/file.c                 |  31 ++
 arch/um/os-Linux/time.c                 |   1 -
 arch/um/os-Linux/umid.c                 |   5 +-
 arch/x86/um/asm/processor.h             |  12 +-
 fs/hostfs/hostfs_kern.c                 |  12 +-
 include/uapi/linux/um_timetravel.h      | 128 ++++++++
 26 files changed, 986 insertions(+), 214 deletions(-)
 create mode 100644 arch/um/include/asm/delay.h
 create mode 100644 arch/um/include/linux/time-internal.h
 delete mode 100644 arch/um/include/shared/timer-internal.h
 create mode 100644 include/uapi/linux/um_timetravel.h