Virtualization - Sep 2022 - [PATCH] vDPA/ifcvf: fix the Calculation of queuepair

On Thu, Sep 22, 2022 at 08:55:26AM +0000, Angus Chen
wrote:
> >From 4f65eae86ab15d7abb8bd30401187cb195dfd27b Mon Sep 17 00:00:00 2001
> From: "angus.chen" <angus.chen at jaguarmicro.com>
> Date: Thu, 22 Sep 2022 14:47:28 +0800
> Subject: [PATCH]     vDPA/ifcvf: fix the Calculation of queuepair
> 
>         The queuepair should be divided by 2

this is just repeating what the patch does.
can you include more info pls?

Documentation/process/5.Posting.rst says among other things:

To that end, the summary line should describe the effects of and motivation
for the change as well as possible given the one-line constraint.  The
detailed description can then amplify on those topics and provide any
needed additional information.  If the patch fixes a bug, cite the commit
which introduced the bug if possible (and please provide both the commit ID
and the title when citing commits).  If a problem is associated with
specific log or compiler output, include that output to help others
searching for a solution to the same problem.  If the change is meant to
support other changes coming in later patch, say so.  If internal APIs are
changed, detail those changes and how other developers should respond.  In
general, the more you can put yourself into the shoes of everybody who will
be reading your changelog, the better that changelog (and the kernel as a
whole) will be.

 
> Signed-off-by: angus.chen <angus.chen at jaguarmicro.com>
Format should be

Angus Chen <angus.chen at jaguarmicro.com>

Also pls drop leading space.

> ---
> drivers/vdpa/ifcvf/ifcvf_base.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c
b/drivers/vdpa/ifcvf/ifcvf_base.c
> index 75a703b803a2..3e4486bfa0b7 100644
> --- a/drivers/vdpa/ifcvf/ifcvf_base.c
> +++ b/drivers/vdpa/ifcvf/ifcvf_base.c
> @@ -323,7 +323,7 @@ u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid)
>         u32 q_pair_id;
> 
>         ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
> -       q_pair_id = qid / hw->nr_vring;
> +       q_pair_id = qid / 2;
>         avail_idx_addr =
&ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
>         last_avail_idx = vp_ioread16(avail_idx_addr);
> 
> @@ -337,7 +337,7 @@ int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid,
u16 num)
>         u32 q_pair_id;
> 
>         ifcvf_lm = (struct ifcvf_lm_cfg __iomem *)hw->lm_cfg;
> -       q_pair_id = qid / hw->nr_vring;
> +       q_pair_id = qid / 2;
>         avail_idx_addr =
&ifcvf_lm->vring_lm_cfg[q_pair_id].idx_addr[qid % 2];
>         hw->vring[qid].last_avail_idx = num;
>         vp_iowrite16(num, avail_idx_addr);

Pls CC more widely.
$ ./scripts/get_maintainer.pl -f drivers/vdpa/ifcvf/ifcvf_base.c
"Michael S. Tsirkin" <mst at redhat.com> (maintainer:VIRTIO CORE
AND NET DRIVERS,commit_signer:6/6=100%)
Jason Wang <jasowang at redhat.com> (maintainer:VIRTIO CORE AND NET
DRIVERS,commit_signer:1/6=17%)
Zhu Lingshan <lingshan.zhu at intel.com>
(commit_signer:5/6=83%,authored:5/6=83%,added_lines:102/102=100%,removed_lines:108/109=99%)
Stefano Garzarella <sgarzare at redhat.com> (commit_signer:1/6=17%)
Tom Rix <trix at redhat.com> (commit_signer:1/6=17%)
Colin Ian King <colin.king at intel.com> (authored:1/6=17%)
virtualization at lists.linux-foundation.org (open list:VIRTIO CORE AND NET
DRIVERS)

Thanks!

BTW, Zhu Lingshan, would you like to be listed a patch reviewer in
MAINTAINERS so people rememeber to CC you? You are working a lot on this
driver.


> --