372fddf709041743a93e381556f4c41aad1e28f8 - linux

commit	372fddf709041743a93e381556f4c41aad1e28f8	[log] [tgz]
author	Kirill A. Shutemov <kirill.shutemov@linux.intel.com>	Fri May 18 13:35:25 2018 +0300
committer	Ingo Molnar <mingo@kernel.org>	Sat May 19 11:56:57 2018 +0200
tree	318f2d073ebfdd56e25f726d2675c4dd09544986
parent	ed7588d5dc6f5e7202fb9bbeb14d94706ba225d7 [diff]

x86/mm: Introduce the 'no5lvl' kernel parameter

This kernel parameter allows to force kernel to use 4-level paging even
if hardware and kernel support 5-level paging.

The option may be useful to work around regressions related to 5-level
paging.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180518103528.59260-5-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Documentation/admin-guide/kernel-parameters.txt[diff]
arch/x86/boot/compressed/cmdline.c[diff]
arch/x86/boot/compressed/head_64.S[diff]
arch/x86/boot/compressed/pgtable_64.c[diff]
arch/x86/kernel/cpu/common.c[diff]
arch/x86/kernel/head64.c[diff]

6 files changed

tree: 318f2d073ebfdd56e25f726d2675c4dd09544986