[GIT PULL] x86/boot for v7.4-rc1

[GIT PULL] x86/boot for v7.4-rc1

[Borislav Petkov]

Hi Linus,

please pull the x86/boot lineup for v7.4-rc1.

Thx.

---

The following changes since commit cee9395acd8043be0644b25c34bfa86623f2b935:

  Linux 7.3-rc1 (2026-08-30 13:34:40 -0700)

are available in the Git repository at:

  ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_boot_for_v7.4_rc1

for you to fetch changes up to dc2a1671d983d26b8ea5a4c5de9c5a028707f40b:

  x86/boot: Drop unused implementation of panic() (2026-09-28 18:07:34 -0700)

----------------------------------------------------------------
- Rework the early decompressor some and drop the version of panic() there
  which used vsnprintf() supplied by the EFI stub even in legacy boot cases,
  where the EFI stub is not present. By Ard Biesheuvel

- Fix unbootable VMs with CONFIG_PVH=y and CONFIG_KASAN_GENERIC=y where the
  compiler decides not to inline __builtin_{memcmp,memset}(). Force the
  inlining with the kernel's own __inline_* versions; by Mauricio Faria de
  Oliveira

- Cleanups and fixlets

----------------------------------------------------------------
Ard Biesheuvel (3):
      x86/tdx: Share tdx_panic() with the EFI stub
      x86/boot: Move unaccepted memory handling out of the decompressor
      x86/boot: Drop unused implementation of panic()

Mauricio Faria de Oliveira (4):
      x86/boot: Remove redundant "cc" clobber in memcmp() and document it
      x86/asm, x86/boot: Carve out inline memcmp() into a separate header
      x86/asm: Group inline string functions
      x86/pvh: Really inline memcmp() and memset() to fix unbootable VMs

Thorsten Blum (1):
      x86/boot: Use BASE_BAUD and DEFAULT_SERIAL_PORT

 arch/x86/boot/compressed/error.c        | 19 ------------
 arch/x86/boot/compressed/error.h        |  1 -
 arch/x86/boot/compressed/mem.c          | 42 --------------------------
 arch/x86/boot/compressed/sev.h          |  2 --
 arch/x86/boot/compressed/tdx-shared.c   |  2 ++
 arch/x86/boot/early_serial_console.c    | 13 ++++-----
 arch/x86/boot/string.c                  | 13 ++-------
 arch/x86/coco/tdx/tdx-shared.c          | 31 ++++++++++++++++++++
 arch/x86/coco/tdx/tdx.c                 | 35 ----------------------
 arch/x86/include/asm/cpuid/api.h        |  2 +-
 arch/x86/include/asm/sev.h              |  2 ++
 arch/x86/include/asm/shared/string.h    | 52 +++++++++++++++++++++++++++++++++
 arch/x86/include/asm/shared/tdx.h       |  1 +
 arch/x86/include/asm/string.h           | 21 +------------
 arch/x86/platform/pvh/enlighten.c       |  3 +-
 drivers/firmware/efi/libstub/x86-stub.c | 39 +++++++++++++++++++++++++
 16 files changed, 138 insertions(+), 140 deletions(-)
 create mode 100644 arch/x86/include/asm/shared/string.h


-- 
Regards/Gruss,
    Boris.

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