* [PATCH] arm64: support huge vmalloc mappings
@ 2022-09-07 11:49 Kefeng Wang
2022-09-09 17:38 ` Catalin Marinas
0 siblings, 1 reply; 5+ messages in thread
From: Kefeng Wang @ 2022-09-07 11:49 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon
Cc: linux-arm-kernel, linux-kernel, Jonathan Corbet, Kefeng Wang
As commit 59089e0a93d ("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 <wangkefeng.wang@huawei.com>
---
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 2434c6729f1c..33b7998f0170 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3617,7 +3617,7 @@
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 b3073f6f6c3a..500979dfde37 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
--
2.35.3
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^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] arm64: support huge vmalloc mappings
2022-09-07 11:49 [PATCH] arm64: support huge vmalloc mappings Kefeng Wang
@ 2022-09-09 17:38 ` Catalin Marinas
2022-09-11 3:46 ` Kefeng Wang
2022-09-11 4:44 ` [PATCH Resend] " Kefeng Wang
0 siblings, 2 replies; 5+ messages in thread
From: Catalin Marinas @ 2022-09-09 17:38 UTC (permalink / raw)
To: Kefeng Wang; +Cc: Will Deacon, linux-arm-kernel, linux-kernel, Jonathan Corbet
On Wed, Sep 07, 2022 at 07:49:50PM +0800, Kefeng Wang wrote:
> As commit 59089e0a93d ("vmalloc: replace VM_NO_HUGE_VMAP with
> VM_ALLOW_HUGE_VMAP"), the use of hugepage mappings for vmalloc
What's this commit? I can't find it anywhere.
--
Catalin
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] arm64: support huge vmalloc mappings
2022-09-09 17:38 ` Catalin Marinas
@ 2022-09-11 3:46 ` Kefeng Wang
2022-09-11 4:44 ` [PATCH Resend] " Kefeng Wang
1 sibling, 0 replies; 5+ messages in thread
From: Kefeng Wang @ 2022-09-11 3:46 UTC (permalink / raw)
To: Catalin Marinas
Cc: Will Deacon, linux-arm-kernel, linux-kernel, Jonathan Corbet
On 2022/9/10 1:38, Catalin Marinas wrote:
> On Wed, Sep 07, 2022 at 07:49:50PM +0800, Kefeng Wang wrote:
>> As commit 59089e0a93d ("vmalloc: replace VM_NO_HUGE_VMAP with
>> VM_ALLOW_HUGE_VMAP"), the use of hugepage mappings for vmalloc
> What's this commit? I can't find it anywhere.
sorry, should be 559089e0a93d
>
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH Resend] arm64: support huge vmalloc mappings
2022-09-09 17:38 ` Catalin Marinas
2022-09-11 3:46 ` Kefeng Wang
@ 2022-09-11 4:44 ` Kefeng Wang
2022-09-16 17:46 ` Catalin Marinas
1 sibling, 1 reply; 5+ messages in thread
From: Kefeng Wang @ 2022-09-11 4:44 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon
Cc: linux-arm-kernel, linux-kernel, Jonathan Corbet, Kefeng Wang
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 <wangkefeng.wang@huawei.com>
---
Resend: correct commit id
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 01c996f0cdaf..2f58c764b094 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3617,7 +3617,7 @@
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 a62a8a23c6e5..679d9a9c98d8 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
--
2.35.3
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH Resend] arm64: support huge vmalloc mappings
2022-09-11 4:44 ` [PATCH Resend] " Kefeng Wang
@ 2022-09-16 17:46 ` Catalin Marinas
0 siblings, 0 replies; 5+ messages in thread
From: Catalin Marinas @ 2022-09-16 17:46 UTC (permalink / raw)
To: Kefeng Wang, Will Deacon; +Cc: linux-arm-kernel, linux-kernel, Jonathan Corbet
On Sun, 11 Sep 2022 12:44:23 +0800, Kefeng Wang wrote:
> 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().
>
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/1] arm64: support huge vmalloc mappings
https://git.kernel.org/arm64/c/e92072237e6c
--
Catalin
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-09-16 17:48 UTC | newest]
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2022-09-07 11:49 [PATCH] arm64: support huge vmalloc mappings Kefeng Wang
2022-09-09 17:38 ` Catalin Marinas
2022-09-11 3:46 ` Kefeng Wang
2022-09-11 4:44 ` [PATCH Resend] " Kefeng Wang
2022-09-16 17:46 ` Catalin Marinas
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