Messages in this thread | | | Subject | Re: [PATCH v1] vdpa/mlx5: Restore the hardware used index after change map | From | Si-Wei Liu <> | Date | Fri, 19 Feb 2021 19:00:00 -0800 |
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On 2/19/2021 6:38 PM, Jason Wang wrote: >>> >>> >>> Right now the value is exposed to userspace via GET_VRING_BASE, so >>> only last_avail_idx is synced. If we need sync last_used_idx, we >>> should also sync pending indices which requires more thoughts. >> Technically it doesn't sound right - crossing the boundary a bit even >> with simplified form of assumption. But depending on how userspace >> could make use of this API, it doesn't seem it breaks existing >> functionality for the moment. > > > I don't get here, maybe you can explain a little bit more? Please refer to the email I just sent.
https://lore.kernel.org/lkml/033b0806-4037-5755-a1fa-91dbb58bab2e@oracle.com/
-Siwei
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