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Message-Id: <1597854198-2871-1-git-send-email-pmorel@linux.ibm.com>
Date: Wed, 19 Aug 2020 18:23:16 +0200
From: Pierre Morel <pmorel@...ux.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: pasic@...ux.ibm.com, borntraeger@...ibm.com, frankja@...ux.ibm.com,
mst@...hat.com, jasowang@...hat.com, cohuck@...hat.com,
kvm@...r.kernel.org, linux-s390@...r.kernel.org,
virtualization@...ts.linux-foundation.org, thomas.lendacky@....com,
david@...son.dropbear.id.au, linuxram@...ibm.com,
hca@...ux.ibm.com, gor@...ux.ibm.com
Subject: [PATCH v9 0/2] s390: virtio: let arch validate VIRTIO features
Hi all,
The goal of the series is to give a chance to the architecture
to validate VIRTIO device features.
in this respin:
The tests are back to virtio_finalize_features.
No more argument for the architecture callback which only reports
if the architecture needs guest memory access restrictions for
VIRTIO.
I renamed the callback to arch_has_restricted_virtio_memory_access,
and the config option to ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS.
Regards,
Pierre
Pierre Morel (2):
virtio: let arch advertise guest's memory access restrictions
s390: virtio: PV needs VIRTIO I/O device protection
arch/s390/Kconfig | 1 +
arch/s390/mm/init.c | 11 +++++++++++
drivers/virtio/Kconfig | 6 ++++++
drivers/virtio/virtio.c | 15 +++++++++++++++
include/linux/virtio_config.h | 9 +++++++++
5 files changed, 42 insertions(+)
--
2.25.1
Changelog
to v9:
- move virtio tests back to virtio_finalize_features
(Connie)
- remove virtio device argument
to v8:
- refactoring by using an optional callback
(Connie)
to v7:
- typo in warning message
(Connie)
to v6:
- rewording warning messages
(Connie, Halil)
to v5:
- return directly from S390 arch_validate_virtio_features()
when the guest is not protected.
(Connie)
- Somme rewording
(Connie, Michael)
- moved back code from arch/s390/ ...kernel/uv.c to ...mm/init.c
(Christian)
to v4:
- separate virtio and arch code
(Pierre)
- moved code from arch/s390/mm/init.c to arch/s390/kernel/uv.c
(as interpreted from Heiko's comment)
- moved validation inside the arch code
(Connie)
- moved the call to arch validation before VIRTIO_F_1 test
(Michael)
to v3:
- add warning
(Connie, Christian)
- add comment
(Connie)
- change hook name
(Halil, Connie)
to v2:
- put the test in virtio_finalize_features()
(Connie)
- put the test inside VIRTIO core
(Jason)
- pass a virtio device as parameter
(Halil)
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