vduse: add vq group asid support

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Add support for assigning Address Space Identifiers (ASIDs) to each VQ
group.  This enables mapping each group into a distinct memory space.

The vq group to ASID association is protected by a rwlock now.  But the
mutex domain_lock keeps protecting the domains of all ASIDs, as some
operations like the one related with the bounce buffer size still
requires to lock all the ASIDs.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260119143306.1818855-12-eperezma@redhat.com>

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Eugenio Pérez 2026-01-19 15:33:04 +01:00 • committed by Michael S. Tsirkin

parent f3dc3a8a3e

commit 079212f687

2 changed files with 315 additions and 136 deletions

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385

drivers/vdpa/vdpa_user/vduse_dev.c

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66

include/uapi/linux/vduse.h

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