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[PATCH v3 0/4] vpci: allow 32-bit BAR writes with memory decoding enabled
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Mon, 23 Mar 2026 23:04:57 -0400
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- Cc: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Julien Grall" <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Tue, 24 Mar 2026 03:05:46 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Pipeline:
https://gitlab.com/xen-project/people/stewarthildebrand/xen/-/pipelines/2404206419
v2->v3:
* add ("vpci: Use pervcpu ranges for BAR mapping")
* rework with fixed array of map/unmap slots
v2:
https://lore.kernel.org/xen-devel/20250723163744.13095-1-stewart.hildebrand@xxxxxxx/T/#t
v1->v2:
* new approach with queued p2m operations
RFC->v1:
* rework BAR mapping machinery to support unmap-then-map operation
Mykyta Poturai (1):
vpci: Use pervcpu ranges for BAR mapping
Stewart Hildebrand (3):
vpci: allow queueing of mapping operations
vpci: allow BAR map/unmap without affecting memory decoding bit
vpci: allow 32-bit BAR writes with memory decoding enabled
xen/common/domain.c | 5 +
xen/drivers/vpci/header.c | 258 +++++++++++++++++++++----------------
xen/drivers/vpci/vpci.c | 43 ++++++-
xen/include/xen/rangeset.h | 7 +
xen/include/xen/vpci.h | 24 +++-
5 files changed, 214 insertions(+), 123 deletions(-)
base-commit: efacf86685912a9249e5cd7f2ef748f0d02b9e23
--
2.53.0
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