linux-kernel - [PATCH v3 0/6] KVM: s390: interrupt: Fix stepping into interrupt handlers

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: <20230724094716.91510-1-iii@linux.ibm.com>
Date:   Mon, 24 Jul 2023 11:44:06 +0200
From:   Ilya Leoshkevich <iii@...ux.ibm.com>
To:     Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Sven Schnelle <svens@...ux.ibm.com>, kvm@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jens Freimann <jfreimann@...hat.com>,
        Ilya Leoshkevich <iii@...ux.ibm.com>
Subject: [PATCH v3 0/6] KVM: s390: interrupt: Fix stepping into interrupt handlers

v2: https://lore.kernel.org/lkml/20230721120046.2262291-1-iii@linux.ibm.com/
v2 -> v3: Add comments, improve the commit messages (Christian, David).
          Add R-bs.
          Patches that need review: [4/6], [6/6].

v1: https://lore.kernel.org/lkml/20230629083452.183274-1-iii@linux.ibm.com/
v1 -> v2: Fix three more issues.
          Add selftests (Claudio).

Hi,

I tried to compare the behavior of KVM and TCG by diffing instruction
traces, and found five issues in KVM related to stepping into interrupt
handlers.

Best regards,
Ilya

Ilya Leoshkevich (6):
  KVM: s390: interrupt: Fix single-stepping into interrupt handlers
  KVM: s390: interrupt: Fix single-stepping into program interrupt
    handlers
  KVM: s390: interrupt: Fix single-stepping kernel-emulated instructions
  KVM: s390: interrupt: Fix single-stepping userspace-emulated
    instructions
  KVM: s390: interrupt: Fix single-stepping keyless mode exits
  KVM: s390: selftests: Add selftest for single-stepping

 arch/s390/kvm/intercept.c                     |  40 ++++-
 arch/s390/kvm/interrupt.c                     |  14 ++
 arch/s390/kvm/kvm-s390.c                      |  27 ++-
 tools/testing/selftests/kvm/Makefile          |   1 +
 .../testing/selftests/kvm/s390x/debug_test.c  | 160 ++++++++++++++++++
 5 files changed, 230 insertions(+), 12 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/s390x/debug_test.c

-- 
2.41.0