In the Linux kernel, the following vulnerability has been resolved:
mm: hugememory: use !CONFIG64BIT to relax huge page alignment on 32 bit machines
Yves-Alexis Perez reported commit 4ef9ad19e176 ("mm: hugememory: don't force huge page alignment on 32 bit") didn't work for x8632 [1]. It is because x8632 uses CONFIGX8632 instead of CONFIG32BIT.
!CONFIG_64BIT should cover all 32 bit machines.
[1] https://lore.kernel.org/linux-mm/CAHbLzkr1LwH3pcTgM+aGQ31ip2bKqiqEQ8=FQB+t2c3dhNKNHA@mail.gmail.com/