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[47.54.130.67]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8b02ac6f670sm162283176d6.14.2026.04.22.09.30.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Apr 2026 09:30:52 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wFaTT-00000008cZg-1r7i; Wed, 22 Apr 2026 13:30:51 -0300 Date: Wed, 22 Apr 2026 13:30:51 -0300 From: Jason Gunthorpe To: Jiri Pirko Cc: Michael Margolin , 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 Message-ID: <20260422163051.GM3611611@ziepe.ca> References: <20260411144915.114571-1-jiri@resnulli.us> <20260411144915.114571-2-jiri@resnulli.us> <20260412123322.GA5166@dev-dsk-mrgolin-1c-b2091117.eu-west-1.amazon.com> <20260413160232.GA21984@dev-dsk-mrgolin-1c-b2091117.eu-west-1.amazon.com> <20260416121000.GA20519@dev-dsk-mrgolin-1c-b2091117.eu-west-1.amazon.com> <20260421125212.GF3611611@ziepe.ca> <3wltr6vsnqqmgopafwjnhfndbbfmsnsxalhvrxjat2qeq72kau@poidixh2jwwm> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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