[PATCH 0/3] vhost_user: configure memory slots

[Bathija, Pravin]

Answers inline.


Internal Use - Confidential
> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin at redhat.com>
> Sent: Monday, August 25, 2025 1:49 AM
> To: Bathija, Pravin <Pravin.Bathija at dell.com>; Bruce Richardson
> <bruce.richardson at intel.com>; David Marchand
> <david.marchand at redhat.com>; Chenbo Xia <chenbox at nvidia.com>
> Cc: dev at dpdk.org; pravin.m.bathija.dev at gmail.com; Thomas Monjalon
> <thomas at monjalon.net>
> Subject: Re: [PATCH 0/3] vhost_user: configure memory slots
>
>
> [EXTERNAL EMAIL]
>
> Hi,
>
> Please try to fix your email client so that we can follow the replies inlined.

Thank you for the input. I have made the necessary adjustments. Please let me know if there is anything missing.

>
> On 8/22/25 9:33 AM, Bathija, Pravin wrote:
> > Dear Maxime, Bruce, David, Chenbo,
> >
> > I would like to follow up on the status of the patches and when we should
> expect these to be merged into the mainline.
> >
> > Please let me know if I can help answer any questions you might have.
> >
> > Regards,
> > Pravin
> >
> >
> > Internal Use - Confidential
> > -----Original Message-----
> > From: Bathija, Pravin
> > Sent: Thursday, August 21, 2025 7:48 PM
> > To: Thomas Monjalon <thomas at monjalon.net>
> > Cc: dev at dpdk.org; pravin.m.bathija.dev at gmail.com; Maxime Coquelin
> > <maxime.coquelin at redhat.com>; Chenbo Xia <chenbox at nvidia.com>; David
> > Marchand <david.marchand at redhat.com>; Bruce Richardson
> > <bruce.richardson at intel.com>
> > Subject: RE: [PATCH 0/3] vhost_user: configure memory slots
> >
> > Comments inline:
> >
> > -----Original Message-----
> > From: Thomas Monjalon <thomas at monjalon.net>
> > Sent: Tuesday, August 19, 2025 4:36 AM
> > To: Bathija, Pravin <Pravin.Bathija at dell.com>
> > Cc: dev at dpdk.org; pravin.m.bathija.dev at gmail.com; Maxime Coquelin
> > <maxime.coquelin at redhat.com>; Chenbo Xia <chenbox at nvidia.com>; David
> > Marchand <david.marchand at redhat.com>; Bruce Richardson
> > <bruce.richardson at intel.com>
> > Subject: Re: [PATCH 0/3] vhost_user: configure memory slots
> >
> >
> > [EXTERNAL EMAIL]
> >
> > Comments inline
> >
> > 12/08/2025 04:33, Pravin M Bathija:
> >> - add protocol feature support add and removal of memory
> >> regions/slots dynamically.
> >> - this patch set has been tested with multiple instances of fio
> >
> > What is "fio"?
> > Fio is an open-source tool to test I/O workloads on disks and file systems.
> >
> >> connected via libblkio to spdk target backed unix domain socket.
> >> - please apply this this patch-set to dpdk mainline as well as
> >> version 25.03.0.
> >
> > As mentionned previously, we don't plan to maintain 25.03.
> > I understand you need it for SPDK,
> > but I think SPDK should rely only on LTS branches.
> > Is there a specific reason why 25.03 is required in SPDK?
> >
> > When we do sub-module init on spdk master, it uses dpdk version 25.03 from
> it's own sub-repo.
> > Our changes for vhost have already been pushed to spdk master. We have
> > also pushed the same dpdk changes in the spdk sub-repo "dpdk" which is
> > version 25.03. I was just ensuring that there is uniformity in the 25.03
> codebase, whether it is on the spdk sub-repo or 25.03 within dpdk repo.
>
> Ok, still, it would be better for SPDK to uses LTS as we have no plans to add
> extra stable branches.
>
> Also, your series may be considered as a feature and not a bug fix, so even if
> 25.03 would be a stable branch (which it is not), it would not be backported
> against it.

Understood. I would request that we merge my changes into DPDK mainline before September 18 when the merge window closes for SPDK v25.09.

>
> >
> >
> >> v2:
> >> - fixed warnings with e-mail address
> >> - fixed warnings with typos
> >> - there is a warning about __rte_packed_begin not being in pair with
> >> __rte_packed_end which on reading the code turns out to be false. It
> >> is an anomaly of how git-format generates the patch and how
> >> check-patch checks it.
> >
> > When sending a v2, please use -v2 so it is reflected in the email subject.
> > I will remember this for next time. Thank you for pointing that out.
> >
> >> Pravin M Bathija (3):
> >>    mailmap: add user
> >>    vhost_user: configure memory slots
> >>    vhost_user: support for memory regions
> >>
> >>   .mailmap               |   1 +
> >>   lib/vhost/rte_vhost.h  |   4 +
> >>   lib/vhost/vhost_user.c | 325
> >> +++++++++++++++++++++++++++++++++++------
> >>   lib/vhost/vhost_user.h |  10 ++
> >>   4 files changed, 296 insertions(+), 44 deletions(-)
> >
> >
> >