From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: borntraeger@de.ibm.com, frankja@linux.ibm.com, david@redhat.com,
cohuck@redhat.com, kvm@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: [PATCH v5 0/3] s390/kvm: fix MVPG when in VSIE
Date: Tue, 2 Mar 2021 18:44:40 +0100 [thread overview]
Message-ID: <20210302174443.514363-1-imbrenda@linux.ibm.com> (raw)
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.
v4->v5
* split kvm_s390_logical_to_effective so it can be reused for vSIE
* fix existing comments and add some more comments
* use the new split _kvm_s390_logical_to_effective in vsie_handle_mvpg
v3->v4
* added PEI_ prefix to DAT_PROT and NOT_PTE macros
* added small comment to explain what they are about
v2->v3
* improved some comments
* improved some variable and parameter names for increased readability
* fixed missing handling of page faults in the MVPG handler
* small readability improvements
v1->v2
* complete rewrite
Claudio Imbrenda (3):
s390/kvm: split kvm_s390_logical_to_effective
s390/kvm: extend kvm_s390_shadow_fault to return entry pointer
s390/kvm: VSIE: correctly handle MVPG when in VSIE
arch/s390/kvm/gaccess.c | 30 ++++++++++--
arch/s390/kvm/gaccess.h | 35 ++++++++++---
arch/s390/kvm/vsie.c | 106 ++++++++++++++++++++++++++++++++++++----
3 files changed, 151 insertions(+), 20 deletions(-)
--
2.26.2
next reply other threads:[~2021-03-02 21:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-02 17:44 Claudio Imbrenda [this message]
2021-03-02 17:44 ` [PATCH v5 1/3] s390/kvm: split kvm_s390_logical_to_effective Claudio Imbrenda
2021-03-05 15:08 ` Christian Borntraeger
2021-03-02 17:44 ` [PATCH v5 2/3] s390/kvm: extend kvm_s390_shadow_fault to return entry pointer Claudio Imbrenda
2021-03-05 17:01 ` Christian Borntraeger
2021-03-02 17:44 ` [PATCH v5 3/3] s390/kvm: VSIE: correctly handle MVPG when in VSIE Claudio Imbrenda
2021-03-08 15:18 ` Christian Borntraeger
2021-03-08 15:19 ` [PATCH v5 0/3] s390/kvm: fix " Christian Borntraeger
2021-03-08 15:26 ` Janosch Frank
2021-03-08 15:30 ` Claudio Imbrenda
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