linux-kernel - [PATCH 11/15] x86/kconfig/64: Enable popular MM options in the defconfig

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Message-ID: <20250506170924.3513161-12-mingo@kernel.org>
Date: Tue,  6 May 2025 19:09:20 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: "H . Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Michal Marek <michal.lkml@...kovi.net>,
	Rik van Riel <riel@...riel.com>
Subject: [PATCH 11/15] x86/kconfig/64: Enable popular MM options in the defconfig

Since the x86 defconfig aims to be a distro kernel work-alike with
fewer drivers and a shorter build time, enable the following
MM options that are typically enabled on major Linux distributions:

- ACPI_HOTPLUG_MEMORY, ZSWAP, SLAB hardening, MEMORY_HOTPLUG,
  MEMORY_HOTREMOVE, PAGE_REPORTING, KSM, higher DEFAULT_MMAP_MIN_ADDR,
  MEMORY_FAILURE, HWPOISON_INJECT, TRANSPARENT_HUGEPAGE,
  TRANSPARENT_HUGEPAGE_MADVISE, IDLE_PAGE_TRACKING, ZONE_DEVICE
  DEVICE_PRIVATE, ANON_VMA_NAME, USERFAULTFD, multi-gen LRU.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Ard Biesheuvel <ardb@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: David Woodhouse <dwmw@...zon.co.uk>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Michal Marek <michal.lkml@...kovi.net>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Rik van Riel <riel@...riel.com>
---
 arch/x86/configs/defconfig.x86_64 | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/x86/configs/defconfig.x86_64 b/arch/x86/configs/defconfig.x86_64
index a32ed372e5bd..02c4ba79946b 100644
--- a/arch/x86/configs/defconfig.x86_64
+++ b/arch/x86/configs/defconfig.x86_64
@@ -57,6 +57,7 @@ CONFIG_HIBERNATION=y
 CONFIG_PM_DEBUG=y
 CONFIG_PM_TRACE_RTC=y
 CONFIG_ACPI_DOCK=y
+CONFIG_ACPI_HOTPLUG_MEMORY=y
 CONFIG_ACPI_BGRT=y
 CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
 CONFIG_CPU_FREQ_GOV_ONDEMAND=y
@@ -76,7 +77,26 @@ CONFIG_BLK_CGROUP_IOLATENCY=y
 CONFIG_BLK_CGROUP_IOCOST=y
 CONFIG_BLK_CGROUP_IOPRIO=y
 CONFIG_BINFMT_MISC=y
+CONFIG_ZSWAP=y
+CONFIG_SLAB_FREELIST_RANDOM=y
+CONFIG_SLAB_FREELIST_HARDENED=y
 # CONFIG_COMPAT_BRK is not set
+CONFIG_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTREMOVE=y
+CONFIG_PAGE_REPORTING=y
+CONFIG_KSM=y
+CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
+CONFIG_MEMORY_FAILURE=y
+CONFIG_HWPOISON_INJECT=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+CONFIG_IDLE_PAGE_TRACKING=y
+CONFIG_ZONE_DEVICE=y
+CONFIG_DEVICE_PRIVATE=y
+CONFIG_ANON_VMA_NAME=y
+CONFIG_USERFAULTFD=y
+CONFIG_LRU_GEN=y
+CONFIG_LRU_GEN_ENABLED=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_XFRM_USER=y
-- 
2.45.2