linux-kernel - [PATCHv3 0/3] x86/mm/encrypt: Cleanup and switching between paging modes

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Message-Id: <20180124163623.61765-1-kirill.shutemov@linux.intel.com>
Date:   Wed, 24 Jan 2018 19:36:20 +0300
From:   "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:     Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Tom Lendacky <thomas.lendacky@....com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Borislav Petkov <bp@...e.de>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCHv3 0/3] x86/mm/encrypt: Cleanup and switching between paging modes

This patcheset is a preparation set for boot-time switching between
paging modes. Please review and consider applying.

Code around sme_populate_pgd() is unnecessary complex and hard to modify.

This patchset rewrites it in more stream-lined way to add support of
boot-time switching between paging modes.

I haven't tested the patchset on hardware capable of memory encryption.

v3:
 - Move all page table related functions into mem_encrypt_identity.c
v2:
 - Rebased to up-to-date tip

Kirill A. Shutemov (3):
  x86/mm/encrypt: Move page table helpers into separate translation unit
  x86/mm/encrypt: Rewrite sme_populate_pgd() and
    sme_populate_pgd_large()
  x86/mm/encrypt: Rewrite sme_pgtable_calc()

 arch/x86/mm/Makefile               |  14 +-
 arch/x86/mm/mem_encrypt.c          | 578 +------------------------------------
 arch/x86/mm/mem_encrypt_identity.c | 563 ++++++++++++++++++++++++++++++++++++
 arch/x86/mm/mm_internal.h          |   1 +
 4 files changed, 574 insertions(+), 582 deletions(-)
 create mode 100644 arch/x86/mm/mem_encrypt_identity.c

-- 
2.15.1