linux-kernel - [PATCH v1 0/4] s390/kvm: fix MVPG when in VSIE

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 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]

Date:   Fri, 18 Dec 2020 15:18:07 +0100
From:   Claudio Imbrenda <imbrenda@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     borntraeger@...ibm.com, frankja@...ux.ibm.com, david@...hat.com,
        kvm@...r.kernel.org, linux-s390@...r.kernel.org
Subject: [PATCH v1 0/4] s390/kvm: fix MVPG when in VSIE

The current handling of the MVPG instruction when executed in a nested
guest is wrong, and can lead to the nested guest hanging.

This patchset fixes the behaviour to be more architecturally correct,
and fixes the hangs observed.

Claudio Imbrenda (4):
  s390/kvm: VSIE: stop leaking host addresses
  s390/kvm: extend guest_translate for MVPG interpretation
  s390/kvm: add kvm_s390_vsie_mvpg_check needed for VSIE MVPG
  s390/kvm: VSIE: correctly handle MVPG when in VSIE

 arch/s390/kvm/gaccess.c | 88 ++++++++++++++++++++++++++++++++++++++---
 arch/s390/kvm/gaccess.h |  3 ++
 arch/s390/kvm/vsie.c    | 78 +++++++++++++++++++++++++++++++++---
 3 files changed, 159 insertions(+), 10 deletions(-)

-- 
2.26.2