linux-kernel - [PATCH v4 11/11] x86: select ARCH_SUPPORTS_PT_RECLAIM if X86

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Message-Id: <841c1f35478d5354872d307888979c9e20de9c09.1733305182.git.zhengqi.arch@bytedance.com>
Date: Wed,  4 Dec 2024 19:09:51 +0800
From: Qi Zheng <zhengqi.arch@...edance.com>
To: david@...hat.com,
	jannh@...gle.com,
	hughd@...gle.com,
	willy@...radead.org,
	muchun.song@...ux.dev,
	vbabka@...nel.org,
	peterx@...hat.com,
	akpm@...ux-foundation.org
Cc: mgorman@...e.de,
	catalin.marinas@....com,
	will@...nel.org,
	dave.hansen@...ux.intel.com,
	luto@...nel.org,
	peterz@...radead.org,
	x86@...nel.org,
	lorenzo.stoakes@...cle.com,
	zokeefe@...gle.com,
	rientjes@...gle.com,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Qi Zheng <zhengqi.arch@...edance.com>
Subject: [PATCH v4 11/11] x86: select ARCH_SUPPORTS_PT_RECLAIM if X86_64

Now, x86 has fully supported the CONFIG_PT_RECLAIM feature, and
reclaiming PTE pages is profitable only on 64-bit systems, so select
ARCH_SUPPORTS_PT_RECLAIM if X86_64.

Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
Cc: x86@...nel.org
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 65f8478fe7a96..77f001c6a5679 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -324,6 +324,7 @@ config X86
 	select FUNCTION_ALIGNMENT_4B
 	imply IMA_SECURE_AND_OR_TRUSTED_BOOT    if EFI
 	select HAVE_DYNAMIC_FTRACE_NO_PATCHABLE
+	select ARCH_SUPPORTS_PT_RECLAIM		if X86_64
 
 config INSTRUCTION_DECODER
 	def_bool y
-- 
2.20.1