diff mbox series

[3/3] x86: Support huge vmalloc mappings

Message ID 20211226083912.166512-4-wangkefeng.wang@huawei.com (mailing list archive)
State New
Headers show
Series mm: support huge vmalloc mapping on arm64/x86 | expand

Commit Message

Kefeng Wang Dec. 26, 2021, 8:39 a.m. UTC 
This patch select HAVE_ARCH_HUGE_VMALLOC to let X86_64 and X86_PAE
support huge vmalloc mappings, it is disabled by default, use
hugevmalloc=on to enable it.

Cc: Thomas Gleixner <tglx@linutronix.de> 
Cc: Ingo Molnar <mingo@redhat.com> 
Cc: Borislav Petkov <bp@alien8.de> 
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 4 ++--
 arch/x86/Kconfig                                | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 235a23b08809..5c8780e66be2 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1630,7 +1630,7 @@ 
 			precedence over memory_hotplug.memmap_on_memory.
 
 
-	hugevmalloc=	[KNL,PPC,ARM64] Reguires CONFIG_HAVE_ARCH_HUGE_VMALLOC
+	hugevmalloc=	[KNL,PPC,ARM64,X86] Reguires CONFIG_HAVE_ARCH_HUGE_VMALLOC
 			Format: { on | off }
 			Default set by CONFIG_HUGE_VMALLOC_DEFAULT_ENABLED.
 
@@ -3415,7 +3415,7 @@ 
 
 	nohugeiomap	[KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings.
 
-	nohugevmalloc	[KNL,PPC,ARM64] Disable kernel huge vmalloc mappings.
+	nohugevmalloc	[KNL,PPC,ARM64,X86] Disable kernel huge vmalloc mappings.
 
 	nosmt		[KNL,S390] Disable symmetric multithreading (SMT).
 			Equivalent to smt=1.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5c2ccb85f2ef..31e465fecd01 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -157,6 +157,7 @@  config X86
 	select HAVE_ACPI_APEI_NMI		if ACPI
 	select HAVE_ALIGNED_STRUCT_PAGE		if SLUB
 	select HAVE_ARCH_AUDITSYSCALL
+	select HAVE_ARCH_HUGE_VMALLOC		if HAVE_ARCH_HUGE_VMAP
 	select HAVE_ARCH_HUGE_VMAP		if X86_64 || X86_PAE
 	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_JUMP_LABEL_RELATIVE