On 6/1/22 09:55, Maxime Coquelin wrote:
Hi Yajun,
On 3/15/22 03:47, Yajun Wu wrote:
vDPA driver first uses kernel driver to allocate doorbell(VAR) area for
each device. Then uses var->mmap_off and var->length to mmap uverbs
device
file as doorbell userspace virtual address.
Current kernel driver provides var->mmap_off equal to page start of VAR.
It's fine with x86 4K page server, because VAR physical address is
only 4K
aligned thus locate in 4K page start.
But with aarch64 64K page server, the actual VAR physical address has
offset within page(not locate in 64K page start). So vDPA driver need add
this within page offset(caps.doorbell_bar_offset) to get right VAR
virtual
address.
Fixes: 62c813706e4 ("vdpa/mlx5: map doorbell")
Cc: sta...@dpdk.org
Signed-off-by: Yajun Wu <yaj...@nvidia.com>
Acked-by: Matan Azrad <ma...@nvidia.com>
---
drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
Thanks,
Maxime
The patch does not apply, could you please rebase it on top of next-
virtio?
Thanks in advance,
Maxime
