linux-kernel - [PATCH 0/3] x86: Make 5-level paging support unconditional for x86-64

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Date: Fri, 21 Jun 2024 19:44:03 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>
Cc: Jonathan Corbet <corbet@....net>,
	Andy Lutomirski <luto@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Kieran Bingham <kbingham@...nel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Michael Roth <michael.roth@....com>,
	Rick Edgecombe <rick.p.edgecombe@...el.com>,
	Brijesh Singh <brijesh.singh@....com>,
	Sandipan Das <sandipan.das@....com>,
	Juergen Gross <jgross@...e.com>,
	Tom Lendacky <thomas.lendacky@....com>,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-efi@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 0/3] x86: Make 5-level paging support unconditional for x86-64

Both Intel and AMD CPUs support 5-level paging, which is expected to
become more widely adopted in the future.

Remove CONFIG_X86_5LEVEL.

In preparation to that remove CONFIG_DYNAMIC_MEMORY_LAYOUT and make
SPARSEMEM_VMEMMAP the only memory model.

Kirill A. Shutemov (3):
  x86/64/mm: Always use dynamic memory layout
  x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory model
  x86/64/mm: Make 5-level paging support unconditional

 Documentation/arch/x86/cpuinfo.rst            |  8 ++---
 .../arch/x86/x86_64/5level-paging.rst         |  9 ------
 arch/x86/Kconfig                              | 32 ++-----------------
 arch/x86/boot/compressed/pgtable_64.c         | 11 ++-----
 arch/x86/boot/header.S                        |  4 ---
 arch/x86/include/asm/disabled-features.h      |  9 +-----
 arch/x86/include/asm/page_64.h                |  2 --
 arch/x86/include/asm/page_64_types.h          | 11 -------
 arch/x86/include/asm/pgtable_64_types.h       | 24 --------------
 arch/x86/kernel/alternative.c                 |  2 +-
 arch/x86/kernel/head64.c                      |  7 ----
 arch/x86/kernel/head_64.S                     |  2 --
 arch/x86/mm/init.c                            |  4 ---
 arch/x86/mm/init_64.c                         |  9 +-----
 arch/x86/mm/pgtable.c                         |  2 --
 drivers/firmware/efi/libstub/x86-5lvl.c       |  2 +-
 scripts/gdb/linux/pgtable.py                  |  4 +--
 .../arch/x86/include/asm/disabled-features.h  |  9 +-----
 18 files changed, 13 insertions(+), 138 deletions(-)

-- 
2.43.0