mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@kernel.org>,
	jannh@google.com, Kees Cook <keescook@chromium.org>
Cc: linux-kernel@vger.kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	"Borislav Petkov" <bp@alien8.de>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Vitaly Kuznetsov" <vkuznets@redhat.com>,
	"Jürgen Groß" <jgross@suse.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Ard Biesheuvel" <ardb@kernel.org>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"David Woodhouse" <dwmw@amazon.co.uk>,
	"Masahiro Yamada" <yamada.masahiro@socionext.com>,
	"Michal Marek" <michal.lkml@markovi.net>,
	"Rik van Riel" <riel@surriel.com>
Subject: Re: [PATCH 09/13] x86/kconfig/64: Enable popular MM options in the defconfig
Date: Sat, 14 Jun 2025 12:39:15 +0200	[thread overview]
Message-ID: <20250614103915.GM2278213@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20250515132719.31868-10-mingo@kernel.org>

On Thu, May 15, 2025 at 03:27:15PM +0200, Ingo Molnar wrote:
> 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@kernel.org>

> +CONFIG_KSM=y

Isn't this thing like a giant security fail?

  parent reply	other threads:[~2025-06-14 10:39 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-15 13:27 [PATCH -v3 00/13] x86/kconfig: Synchronize the x86 defconfigs with distribution configs Ingo Molnar
2025-05-15 13:27 ` [PATCH 01/13] x86/kconfig/64: Refresh defconfig Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] x86/kconfig/32: " tip-bot2 for Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] x86/kconfig/64: " tip-bot2 for Ingo Molnar
2025-07-14 14:33   ` [tip: x86/kconfig] x86/kconfig/32: " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 02/13] " Ingo Molnar
2025-05-15 13:27 ` [PATCH 03/13] x86/kbuild: Remove ancient 'arch/i386/' and 'arch/x86_64/' directory removal 'archclean' target Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-06-13 17:12   ` [PATCH 03/13] " Brian Gerst
2025-06-15 11:25     ` Ingo Molnar
2025-05-15 13:27 ` [PATCH 04/13] x86/tools: insn_decoder_test.c: Emit standard build success messages Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-06-15 11:34   ` tip-bot2 for Ingo Molnar
2025-07-14 14:33   ` tip-bot2 for Ingo Molnar
2025-07-14 15:10   ` tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 05/13] x86/tools: insn_sanity.c: " Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-06-15 11:34   ` tip-bot2 for Ingo Molnar
2025-07-14 14:33   ` tip-bot2 for Ingo Molnar
2025-07-14 15:10   ` tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 06/13] x86/kconfig/64: Enable the KVM host in the defconfig Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 07/13] x86/kconfig/64: Enable more virtualization guest options in the defconfig: enable Xen, Xen_PVH, Jailhouse, ACRN, Intel TDX and Hyper-V Ingo Molnar
2025-05-15 23:40   ` Michael Kelley
2025-05-16  7:49     ` Ingo Molnar
2025-05-16 13:14       ` Michael Kelley
2025-05-16  8:15     ` Vitaly Kuznetsov
2025-06-14  7:32       ` [PATCH] x86/kconfig/defconfig: Enable CONFIG_DRM_FBDEV_EMULATION=y Ingo Molnar
2025-06-14 10:30     ` [PATCH 07/13] x86/kconfig/64: Enable more virtualization guest options in the defconfig: enable Xen, Xen_PVH, Jailhouse, ACRN, Intel TDX and Hyper-V Peter Zijlstra
2025-06-14 16:46       ` Michael Kelley
2025-06-13  8:25   ` [tip: x86/kconfig] x86/kconfig/64: Enable more virtualization guest options in the defconfig: Enable " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 08/13] x86/kconfig/64: Enable BPF support in the defconfig Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 09/13] x86/kconfig/64: Enable popular MM options " Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-06-14 10:39   ` Peter Zijlstra [this message]
2025-06-16 18:34     ` [PATCH 09/13] " Jann Horn
2025-06-14 17:18   ` Linus Torvalds
2025-06-15 11:23     ` Ingo Molnar
2025-06-15 11:29       ` Ingo Molnar
2025-05-15 13:27 ` [PATCH 10/13] x86/kconfig/64: Enable popular kernel debugging " Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 11/13] x86/kconfig/64: Enable popular scheduler, cgroups and namespaces " Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 12/13] x86/kconfig/64: Enable popular generic kernel " Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar
2025-05-15 13:27 ` [PATCH 13/13] x86/kconfig/32: Synchronize the x86-32 defconfig to the x86-64 defconfig Ingo Molnar
2025-06-13  8:25   ` [tip: x86/kconfig] " tip-bot2 for Ingo Molnar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20250614103915.GM2278213@noisy.programming.kicks-ass.net \
    --to=peterz@infradead.org \
    --cc=akpm@linux-foundation.org \
    --cc=ardb@kernel.org \
    --cc=arnd@arndb.de \
    --cc=bp@alien8.de \
    --cc=dwmw@amazon.co.uk \
    --cc=hpa@zytor.com \
    --cc=jannh@google.com \
    --cc=jgross@suse.com \
    --cc=keescook@chromium.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=michal.lkml@markovi.net \
    --cc=mingo@kernel.org \
    --cc=riel@surriel.com \
    --cc=tglx@linutronix.de \
    --cc=torvalds@linux-foundation.org \
    --cc=vkuznets@redhat.com \
    --cc=yamada.masahiro@socionext.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®