From e92072237e6c8497cad5e9d2f2e3c44bb9d26aef Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Sun, 11 Sep 2022 12:44:23 +0800 Subject: [PATCH] arm64: support huge vmalloc mappings As commit 559089e0a93d ("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: Kefeng Wang Link: https://lore.kernel.org/r/20220911044423.139229-1-wangkefeng.wang@huawei.com Signed-off-by: Catalin Marinas --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/arm64/Kconfig | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a1e88e9..dc3a939 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -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. diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6f1ecf4..7dbcf20 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -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 -- 2.7.4