[GIT PULL] x86/urgent for 7.4-rc4

[Dave Hansen]

Hi Linus,

Please pull some x86/urgent changes for 7.4-rc4.

The MADV_FREE one is notable for silently losing user data and having
been around for a couple of years. The main explanation I'd have for
its longevity is that it requires a few different things to align at
the same time: MADV_FREE, THP and heavy reclaim.

There's also a good set of x86/mm fixes from Lorenzo and company.
They look somewhat theoretical at first but they have actually been
hampering folks' ability mm work in the area.
The following changes since commit d2929113b15bfc06793b852aeba3d2db6d79fcc9:

  x86/MCE/AMD: Fix inverted interrupt enablement during storm handling (2026-09-08 09:16:32 +0200)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_urgent_for_7.3-rc4

for you to fetch changes up to 27600805e62f800bacf990354632eae4e487d34c:

  x86/amd_node: Fix PCI device reference counting in amd_smn_init() (2026-09-10 18:05:43 -0700)

----------------------------------------------------------------
 * Fix user-space data loss with MADV_FREE and THP
 * Fix set_memory oopses
 * Fix addition of large constants in mul_u64_add_u64_div_u64()
 * Fix FineIBT hash offset in cfi_get_func_hash()
 * Fix PCI device reference counting in amd_smn_init()

----------------------------------------------------------------
David Laight (1):
      x86/div64: Fix addition of large constants in mul_u64_add_u64_div_u64()

Lorenzo Stoakes (ARM) (3):
      x86/mm/pat: Acquire init_mm write lock on collapse to avoid UAF
      x86/mm/pat: Acquire init_mm read lock on attribute changes to avoid UAF
      x86/mm/pat: Allocate split page tables as kernel page tables

Pedro Falcato (1):
      x86/alternatives: Exclude text poking against change_page_attr()

Soheil Hassas Yeganeh (1):
      x86/cfi: Fix FineIBT hash offset in cfi_get_func_hash()

Vernon Yang (1):
      x86/mm: Fix user-space data loss with MADV_FREE and THP

Yazen Ghannam (1):
      x86/amd_node: Fix PCI device reference counting in amd_smn_init()

 arch/x86/include/asm/div64.h   |   2 +-
 arch/x86/include/asm/pgtable.h |   2 +-
 arch/x86/kernel/alternative.c  | 111 +++++++++++++++++++++++++++--------------
 arch/x86/kernel/amd_node.c     |   6 +--
 arch/x86/mm/pat/set_memory.c   |  53 +++++++++++++++-----
 include/linux/mmap_lock.h      |   2 +
 6 files changed, 121 insertions(+), 55 deletions(-)