From: Jason Gunthorpe <jgg@ziepe.ca>
To: Jiri Pirko <jiri@resnulli.us>
Cc: Michael Margolin <mrgolin@amazon.com>,
linux-rdma@vger.kernel.org, leon@kernel.org,
gal.pressman@linux.dev, sleybo@amazon.com, parav@nvidia.com,
mbloch@nvidia.com, yanjun.zhu@linux.dev,
marco.crivellari@suse.com, roman.gushchin@linux.dev,
phaddad@nvidia.com, lirongqing@baidu.com, ynachum@amazon.com,
huangjunxian6@hisilicon.com, kalesh-anakkur.purayil@broadcom.com,
ohartoov@nvidia.com, michaelgur@nvidia.com, shayd@nvidia.com,
edwards@nvidia.com, sriharsha.basavapatna@broadcom.com,
andrew.gospodarek@broadcom.com, selvin.xavier@broadcom.com
Subject: Re: [PATCH rdma-next v2 01/15] RDMA/core: Introduce generic buffer descriptor infrastructure for umem
Date: Wed, 22 Apr 2026 13:30:51 -0300 [thread overview]
Message-ID: <20260422163051.GM3611611@ziepe.ca> (raw)
In-Reply-To: <3wltr6vsnqqmgopafwjnhfndbbfmsnsxalhvrxjat2qeq72kau@poidixh2jwwm>
On Wed, Apr 22, 2026 at 12:32:26PM +0200, Jiri Pirko wrote:
> Tue, Apr 21, 2026 at 02:52:12PM +0200, jgg@ziepe.ca wrote:
> >On Thu, Apr 16, 2026 at 12:10:00PM +0000, Michael Margolin wrote:
> >> > >> >> @@ -64,6 +64,7 @@ enum {
> >> > >> >> UVERBS_ATTR_UHW_IN = UVERBS_ID_DRIVER_NS,
> >> > >> >> UVERBS_ATTR_UHW_OUT,
> >> > >> >> UVERBS_ID_DRIVER_NS_WITH_UHW,
> >> > >> >> + UVERBS_ATTR_BUFFERS,
> >>
> >> I don't think you can add anything here as it overlaps with driver
> >> specific attributes. I suggest defining per command attr id and passing
> >> it by caller into ib_umem_list_create.
> >
> >Right, the expectation would be to have a ATTRS_QP_BUFFERS
>
> Okay. I was under impression I can add a generic attr, I was wrong :/
There may be a way to do that, but the [UVERBS_ID_DRIVER_NS:MAX]
number space is fully delegated to drivers and all the low values are
already taken.
Jason
next prev parent reply other threads:[~2026-04-22 16:30 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-11 14:49 [PATCH rdma-next v2 00/15] RDMA: Introduce generic buffer descriptor infrastructure for umem Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 01/15] RDMA/core: " Jiri Pirko
2026-04-12 12:33 ` Michael Margolin
2026-04-13 8:32 ` Jiri Pirko
2026-04-13 16:02 ` Michael Margolin
2026-04-13 18:22 ` Jiri Pirko
2026-04-16 12:10 ` Michael Margolin
2026-04-16 13:34 ` Jiri Pirko
2026-04-21 12:50 ` Jason Gunthorpe
2026-04-21 12:52 ` Jason Gunthorpe
2026-04-22 10:32 ` Jiri Pirko
2026-04-22 16:30 ` Jason Gunthorpe [this message]
2026-04-21 13:46 ` Jason Gunthorpe
2026-04-22 11:33 ` Jiri Pirko
2026-04-22 14:06 ` Jiri Pirko
2026-04-22 16:51 ` Jason Gunthorpe
2026-04-11 14:49 ` [PATCH rdma-next v2 02/15] RDMA/uverbs: Push out CQ buffer umem processing into a helper Jiri Pirko
2026-04-21 13:25 ` Jason Gunthorpe
2026-04-22 10:56 ` Jiri Pirko
2026-04-22 16:32 ` Jason Gunthorpe
2026-04-11 14:49 ` [PATCH rdma-next v2 03/15] RDMA/uverbs: Integrate umem_list into CQ creation Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 04/15] RDMA/efa: Use umem_list for user CQ buffer Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 05/15] RDMA/mlx5: " Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 06/15] RDMA/bnxt_re: " Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 07/15] RDMA/mlx4: " Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 08/15] RDMA/uverbs: Remove legacy umem field from struct ib_cq Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 09/15] RDMA/uverbs: Verify all umem_list buffers are consumed after CQ creation Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 10/15] RDMA/uverbs: Integrate umem_list into QP creation Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 11/15] RDMA/mlx5: Use umem_list for QP buffers in create_qp Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 12/15] RDMA/uverbs: Add doorbell record buffer slot to CQ umem_list Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 13/15] RDMA/mlx5: Use umem_list for CQ doorbell record Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 14/15] RDMA/uverbs: Add doorbell record buffer slot to QP umem_list Jiri Pirko
2026-04-11 14:49 ` [PATCH rdma-next v2 15/15] RDMA/mlx5: Use umem_list for QP doorbell record Jiri Pirko
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