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x86/mm: Drop CONFIG_SWIOTLB for PAE

Since kernels with and without CONFIG_X86_PAE are now limited
to the low 4GB of physical address space, there is no need to
use swiotlb any more, so stop selecting this.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250226213714.4040853-7-arnd@kernel.org

authored by

Arnd Bergmann and committed by
Ingo Molnar a8331594 bbeb69ce

-1
-1
arch/x86/Kconfig
··· 1462 1462 bool "PAE (Physical Address Extension) Support" 1463 1463 depends on X86_32 && X86_HAVE_PAE 1464 1464 select PHYS_ADDR_T_64BIT 1465 - select SWIOTLB 1466 1465 help 1467 1466 PAE is required for NX support, and furthermore enables 1468 1467 larger swapspace support for non-overcommit purposes. It