linux-kernel - [PATCH v12 00/22] selftests, powerpc, x86 : Memory Protection Keys

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Date:   Wed, 21 Feb 2018 17:55:19 -0800
From:   Ram Pai <linuxram@...ibm.com>
To:     shuahkh@....samsung.com, linux-kselftest@...r.kernel.org
Cc:     mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org,
        linux-mm@...ck.org, x86@...nel.org, linux-arch@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        mingo@...hat.com, akpm@...ux-foundation.org, dave.hansen@...el.com,
        benh@...nel.crashing.org, paulus@...ba.org,
        khandual@...ux.vnet.ibm.com, aneesh.kumar@...ux.vnet.ibm.com,
        bsingharora@...il.com, hbabu@...ibm.com, mhocko@...nel.org,
        bauerman@...ux.vnet.ibm.com, ebiederm@...ssion.com,
        linuxram@...ibm.com, arnd@...db.de
Subject: [PATCH v12 00/22] selftests, powerpc, x86 : Memory Protection Keys

Memory protection keys enables an application to protect its address space from
inadvertent access by its own code.

This feature is now enabled on powerpc architecture and integrated in
4.16-rc1.  The patches move the selftests to arch neutral directory
and enhance their test coverage. 

Test
----
Verified for correctness on powerpc
and on x86 architectures(using EC2 ubuntu VM instance).

History:
-------

version 12: 
	(1) fixed the offset of pkey field in the siginfo structure for
		x86_64 and powerpc. And tries to use the actual field
		if the headers have it defined.
version 11:
	(1) fixed a deadlock in the ptrace testcase.

version 10 and prior:
	(1) moved the testcase to arch neutral directory
	(2) split the changes into incremental patches.

Ram Pai (21):
  selftests/x86: Move protecton key selftest to arch neutral directory
  selftests/vm: rename all references to pkru to a generic name
  selftests/vm: move generic definitions to header file
  selftests/vm: typecast the pkey register
  selftests/vm: generic function to handle shadow key register
  selftests/vm: fix the wrong assert in pkey_disable_set()
  selftests/vm: fixed bugs in pkey_disable_clear()
  selftests/vm: clear the bits in shadow reg when a pkey is freed.
  selftests/vm: fix alloc_random_pkey() to make it really random
  selftests/vm: introduce two arch independent abstraction
  selftests/vm: pkey register should match shadow pkey
  selftests/vm: generic cleanup
  selftests/vm: powerpc implementation for generic abstraction
  selftests/vm: clear the bits in shadow reg when a pkey is freed.
  selftests/vm: powerpc implementation to check support for pkey
  selftests/vm: fix an assertion in test_pkey_alloc_exhaust()
  selftests/vm: associate key on a mapped page and detect access
    violation
  selftests/vm: associate key on a mapped page and detect write
    violation
  selftests/vm: detect write violation on a mapped access-denied-key
    page
  selftests/vm: testcases must restore pkey-permissions
  selftests/vm: sub-page allocator

Thiago Jung Bauermann (1):
  selftests/vm: Fix deadlock in protection_keys.c

 tools/testing/selftests/vm/Makefile           |    1 +
 tools/testing/selftests/vm/pkey-helpers.h     |  434 ++++++++
 tools/testing/selftests/vm/protection_keys.c  | 1471 +++++++++++++++++++++++++
 tools/testing/selftests/x86/Makefile          |    2 +-
 tools/testing/selftests/x86/pkey-helpers.h    |  223 ----
 tools/testing/selftests/x86/protection_keys.c | 1407 -----------------------
 6 files changed, 1907 insertions(+), 1631 deletions(-)
 create mode 100644 tools/testing/selftests/vm/pkey-helpers.h
 create mode 100644 tools/testing/selftests/vm/protection_keys.c
 delete mode 100644 tools/testing/selftests/x86/pkey-helpers.h
 delete mode 100644 tools/testing/selftests/x86/protection_keys.c