[GIT PULL] x86/boot changes for v5.9

[Ingo Molnar]

Linus,

Please pull the latest x86/boot git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-boot-2020-08-03

   # HEAD: 1ac1efa5f6950f8f126f2c1921bb699ce009ec7d Documentation: dontdiff: Add zstd compressed files

The main change in this cycle was to add support for ZSTD-compressed
kernel and initrd images.

ZSTD has a very fast decompressor, yet it compresses better than gzip.

  out-of-topic modifications in x86-boot-2020-08-03:
  ----------------------------------------------------
  .gitignore                         # 6f3decabaff0: .gitignore: Add ZSTD-compres
  Makefile                           # 48f7ddf785af: init: Add support for zstd c
  include/linux/decompress/unzstd.h  # 4963bb2b8988: lib: Add zstd support to dec
  init/Kconfig                       # 48f7ddf785af: init: Add support for zstd c
  lib/Kconfig                        # 4963bb2b8988: lib: Add zstd support to dec
  lib/Makefile                       # 4963bb2b8988: lib: Add zstd support to dec
  lib/decompress.c                   # 4963bb2b8988: lib: Add zstd support to dec
  lib/decompress_unzstd.c            # 4963bb2b8988: lib: Add zstd support to dec
  lib/zstd/fse_decompress.c          # 6d25a633ea68: lib: Prepare zstd for preboo
  lib/zstd/zstd_internal.h           # 6d25a633ea68: lib: Prepare zstd for preboo
  scripts/Makefile.lib               # 48f7ddf785af: init: Add support for zstd c
  usr/Kconfig                        # a30d8a39f057: usr: Add support for zstd co
  usr/Makefile                       # a30d8a39f057: usr: Add support for zstd co

 Thanks,

	Ingo

------------------>
Adam Borowski (1):
      .gitignore: Add ZSTD-compressed files

Nick Terrell (7):
      lib: Prepare zstd for preboot environment, improve performance
      lib: Add zstd support to decompress
      init: Add support for zstd compressed kernel
      usr: Add support for zstd compressed initramfs
      x86: Bump ZO_z_extra_bytes margin for zstd
      x86: Add support for ZSTD compressed kernel
      Documentation: dontdiff: Add zstd compressed files


 .gitignore                        |   1 +
 Documentation/dontdiff            |   1 +
 Documentation/x86/boot.rst        |   6 +-
 Makefile                          |   3 +-
 arch/x86/Kconfig                  |   1 +
 arch/x86/boot/compressed/Makefile |   6 +-
 arch/x86/boot/compressed/kaslr.c  |   7 -
 arch/x86/boot/compressed/misc.c   |   4 +
 arch/x86/boot/header.S            |   8 +-
 arch/x86/include/asm/boot.h       |  11 +-
 include/linux/decompress/unzstd.h |  11 ++
 init/Kconfig                      |  15 +-
 lib/Kconfig                       |   4 +
 lib/Makefile                      |   1 +
 lib/decompress.c                  |   5 +
 lib/decompress_unzstd.c           | 345 ++++++++++++++++++++++++++++++++++++++
 lib/zstd/fse_decompress.c         |   9 +-
 lib/zstd/zstd_internal.h          |  14 +-
 scripts/Makefile.lib              |  22 +++
 usr/Kconfig                       |  20 +++
 usr/Makefile                      |   1 +
 21 files changed, 469 insertions(+), 26 deletions(-)
 create mode 100644 include/linux/decompress/unzstd.h
 create mode 100644 lib/decompress_unzstd.c