Hi Sunil:
Thanks for your review.
On 3/2/2021 3:45 AM, Sunil Muthuswamy wrote:
Hi Christoph:
Thanks a lot for your review. There are some reasons.
1) Vmbus drivers don't use DMA API now.
What is blocking us from making the Hyper-V drivers use the DMA API's? They
will be a nul
> Hi Christoph:
> Thanks a lot for your review. There are some reasons.
> 1) Vmbus drivers don't use DMA API now.
What is blocking us from making the Hyper-V drivers use the DMA API's? They
will be a null-op generally, when there is no bounce buffer support needed.
> 2) Hyper-V V
Hi Christoph:
Thanks a lot for your review. There are some reasons.
1) Vmbus drivers don't use DMA API now.
2) Hyper-V Vmbus channel ring buffer already play bounce buffer
role for most vmbus drivers. Just two kinds of packets from
netvsc/storvsc are uncovered.
3) In AMD SEV-
This should be handled by the DMA mapping layer, just like for native
SEV support.
From: Tianyu Lan
Storvsc driver needs to reverse additional bounce
buffers to receive multipagebuffer packet and copy
data from brounce buffer when get response messge
from message.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Tianyu Lan
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drivers/scsi/s
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