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VFIO fixes for v6.3-rc4

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- Fix dirty size reporting for pre-copy in mlx5 variant driver (Yishai Hadas)
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Merge tag 'vfio-v6.3-rc4' of https://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:

 - Fix dirty size reporting for pre-copy in mlx5 variant driver (Yishai
   Hadas)

* tag 'vfio-v6.3-rc4' of https://github.com/awilliam/linux-vfio:
  vfio/mlx5: Fix the report of dirty_bytes upon pre-copy
This commit is contained in:
Linus Torvalds 2023-03-21 15:46:39 -07:00
commit a1effab7a3
1 changed files with 4 additions and 10 deletions
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14
drivers/vfio/pci/mlx5/main.c
View File

@ -442,16 +442,10 @@ static long mlx5vf_precopy_ioctl(struct file *filp, unsigned int cmd,
if (migf->pre_copy_initial_bytes > *pos) {
info.initial_bytes = migf->pre_copy_initial_bytes - *pos;
} else {
buf = mlx5vf_get_data_buff_from_pos(migf, *pos, &end_of_data);
if (buf) {
info.dirty_bytes = buf->start_pos + buf->length - *pos;
} else {
if (!end_of_data) {
ret = -EINVAL;
goto err_migf_unlock;
}
info.dirty_bytes = inc_length;
}
info.dirty_bytes = migf->max_pos - *pos;
if (!info.dirty_bytes)
end_of_data = true;
info.dirty_bytes += inc_length;
}
if (!end_of_data || !inc_length) {