linux-kernel - [PATCH 0/4] x86: 5-level related changes into decompression code

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Message-Id: <20171101115503.18358-1-kirill.shutemov@linux.intel.com>
Date:   Wed,  1 Nov 2017 14:54:59 +0300
From:   "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Cyrill Gorcunov <gorcunov@...nvz.org>,
        Borislav Petkov <bp@...e.de>, Andi Kleen <ak@...ux.intel.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 0/4] x86: 5-level related changes into decompression code

Hi Ingo,

While we haven't yet closed on how to handle MAX_PHYSMEM_BITS situation,
could you look on changes into kernel decompression code?

These changes prepare the code to boot-time switching between paging modes
and handle booting in 5-level mode when bootloader put kernel image above
4G, but haven't enabled 5-level paging for us.

Please review and consider applying.

Kirill A. Shutemov (4):
  x86/boot/compressed/64: Compile pagetable.c unconditionally
  x86/boot/compressed/64: Detect and handle 5-level paging at boot-time
  x86/boot/compressed/64: Introduce place_trampoline()
  x86/boot/compressed/64: Handle 5-level paging boot if kernel is above
    4G

 arch/x86/boot/compressed/Makefile    |  2 +-
 arch/x86/boot/compressed/head_64.S   | 99 +++++++++++++++++++++++++-----------
 arch/x86/boot/compressed/pagetable.c | 66 ++++++++++++++++++++++++
 arch/x86/boot/compressed/pagetable.h | 18 +++++++
 4 files changed, 154 insertions(+), 31 deletions(-)
 create mode 100644 arch/x86/boot/compressed/pagetable.h

-- 
2.14.2