vDPA: !FEATURES_OK should not block querying device config space

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Users may want to query the config space of a vDPA device,
to choose a appropriate one for a certain guest. This means the
users need to read the config space before FEATURES_OK, and
the existence of config space contents does not depend on
FEATURES_OK.

The spec says:
The device MUST allow reading of any device-specific configuration
field before FEATURES_OK is set by the driver. This includes
fields which are conditional on feature bits, as long as those
feature bits are offered by the device.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20220722115309.82746-5-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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Zhu Lingshan 2022-07-22 19:53:07 +08:00 • committed by Michael S. Tsirkin

parent 378b2e9568

commit a34bed37fc

1 changed files with 0 additions and 8 deletions

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drivers/vdpa/vdpa.c

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