linux-kernel - [PATCHv4 0/3] x86/mm/encrypt: Cleanup and switching between paging modes<Paste>

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180131135404.40692-1-kirill.shutemov@linux.intel.com>
Date:   Wed, 31 Jan 2018 16:54:01 +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: [PATCHv4 0/3] x86/mm/encrypt: Cleanup and switching between paging modes<Paste>

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.

v4:
 - Move sev_enabled declaration to <linux/mem_encrypt.h>
 - Fix few typos in commit messages
 - Reviewed/Tested-by from Tom
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/include/asm/mem_encrypt.h |   1 +
 arch/x86/mm/Makefile               |  14 +-
 arch/x86/mm/mem_encrypt.c          | 578 +------------------------------------
 arch/x86/mm/mem_encrypt_identity.c | 564 ++++++++++++++++++++++++++++++++++++
 4 files changed, 575 insertions(+), 582 deletions(-)
 create mode 100644 arch/x86/mm/mem_encrypt_identity.c

-- 
2.15.1