Commit e9207223 authored by Kefeng Wang's avatar Kefeng Wang Committed by Catalin Marinas
Browse files

arm64: support huge vmalloc mappings 



As commit 559089e0 ("vmalloc: replace VM_NO_HUGE_VMAP with
VM_ALLOW_HUGE_VMAP"), the use of hugepage mappings for vmalloc
is an opt-in strategy, so it is saftly to support huge vmalloc
mappings on arm64, for now, it is used in kvmalloc() and
alloc_large_system_hash().

Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20220911044423.139229-1-wangkefeng.wang@huawei.com


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 877ace9e

Documentation/admin-guide/kernel-parameters.txt

+1 −1
Original line number Diff line number Diff line
@@ -3614,7 +3614,7 @@ 


	nohugeiomap	[KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings.



	nohugevmalloc	[PPC] Disable kernel huge vmalloc mappings.

	nohugevmalloc	[KNL,X86,PPC,ARM64] Disable kernel huge vmalloc mappings.



	nosmt		[KNL,S390] Disable symmetric multithreading (SMT).

			Equivalent to smt=1.

arch/arm64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -149,6 +149,7 @@ config ARM64 
	select HAVE_ARCH_AUDITSYSCALL

	select HAVE_ARCH_BITREVERSE

	select HAVE_ARCH_COMPILER_H

	select HAVE_ARCH_HUGE_VMALLOC

	select HAVE_ARCH_HUGE_VMAP

	select HAVE_ARCH_JUMP_LABEL

	select HAVE_ARCH_JUMP_LABEL_RELATIVE