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Message-ID: <20230815151415.379760-1-seiden@linux.ibm.com>
Date: Tue, 15 Aug 2023 17:14:11 +0200
From: Steffen Eiden <seiden@...ux.ibm.com>
To: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
kvm@...r.kernel.org
Cc: Janosch Frank <frankja@...ux.ibm.com>,
Claudio Imbrenda <imbrenda@...ux.ibm.com>,
David Hildenbrand <david@...hat.com>,
Michael Mueller <mimu@...ux.vnet.ibm.com>,
Marc Hartmayer <mhartmay@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Viktor Mihajlovski <mihajlov@...ux.ibm.com>
Subject: [PATCH v4 0/4] KVM: s390: Enable AP instructions for PV-guests
This series enables general KVM support for AP-passthrough for Secure
Execution guests (PV-guests).
To enable AP inside PV-guests two things have to be done/considered:
1) set corresponding flags in the Create Secure Configuration UVC if
firmware supports AP for PV-guests (patch 4).
2) enable/disable AP in PV-guests if the VMM wants this (patch 3).
since v3:
- add a patch from Viktor that handles a new rc that can occur with AP-pt.
- remove KVM_S390_VM_CPU_UV_FEAT_GUEST_DEFAULT define (Janosch)
- add a boundary check in uv_has_feature() (Janosch)
- add r-b from Janosch
since v2:
- applied styling recommendations from Heiko
since v1:
- PATCH 1: r-b from Claudio
- PATCH 2: fixed formatting issues (Claudio)
- PATCH 3: removed unnecessary checks (Claudio)
Steffen
Steffen Eiden (3):
s390: uv: UV feature check utility
KVM: s390: Add UV feature negotiation
KVM: s390: pv: Allow AP-instructions for pv-guests
Viktor Mihajlovski (1):
KVM: s390: pv: relax WARN_ONCE condition for destroy fast
arch/s390/include/asm/kvm_host.h | 2 +
arch/s390/include/asm/uv.h | 19 +++++++-
arch/s390/include/uapi/asm/kvm.h | 16 +++++++
arch/s390/kernel/uv.c | 2 +-
arch/s390/kvm/kvm-s390.c | 75 +++++++++++++++++++++++++++++++-
arch/s390/kvm/pv.c | 9 ++--
arch/s390/mm/fault.c | 2 +-
7 files changed, 118 insertions(+), 7 deletions(-)
--
2.41.0
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