From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DBD074248AF for ; Thu, 16 Jul 2026 13:24:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784208252; cv=none; b=T/PoKOLM6RkvUgwENSa4KqrjlyIPWol1/FuYMh9RFI0QCUJ96PPvjHZuHDWwyFrdLHWp7O8y66OJDdyLTSGr2HjHRJs6l0nSyNYuiM9jtfBOMznLWrJySpQLvbKaFIip9dYuLId+bm27BkOPqDz0pAs8DvkC4Gb3LrwPhHQmNJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784208252; c=relaxed/simple; bh=zFeWDdafDoYi7ea+8KDHKiNyfn2RCWSEnlN5ywMFr9k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LFRiGDDNA8oZF4SZnuvAS7823q7UUhPbQ0rnudQkF6U29mkMyQl/kdhHjEFva/LwcJ2T/aRiR3T3rNN6wdsiD+HQGWxcwA1DgFp3MSb2FQIvz3OrYPFBbDJwQuDiwk1sNrOiMUijdveZD8q+I39QSRqd0lttR3+3Ap0iWb+/hDA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=resnulli.us; spf=none smtp.mailfrom=resnulli.us; dkim=pass (2048-bit key) header.d=resnulli-us.20251104.gappssmtp.com header.i=@resnulli-us.20251104.gappssmtp.com header.b=O042gtuL; arc=none smtp.client-ip=209.85.128.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=resnulli.us Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=resnulli.us Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=resnulli-us.20251104.gappssmtp.com header.i=@resnulli-us.20251104.gappssmtp.com header.b="O042gtuL" Received: by mail-wm1-f47.google.com with SMTP id 5b1f17b1804b1-495437bb891so3362545e9.1 for ; Thu, 16 Jul 2026 06:24:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20251104.gappssmtp.com; s=20251104; t=1784208248; x=1784813048; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=myAuJMzKK/4iG9Cmnf7VPvLoMfqifqNKwX3ebA7nias=; b=O042gtuL4LYOEy+SyRQCnxeZzMebGdF1yLbEEsAhXGrT7ON792v3lOFl30BmMmgoi3 DDEVwahCP3E4rh9hSd7WbpT09YiZwwQyIEnMn0ppIKZ+VfB8OB5qB7j11mkyKHVGVuWL reMp1MrFt+2hXtaoqZTiqOgjghVQIAV1KE0GYyf6aJj/VaPSMSicVQSUAc3rw3v0+ttd RL4puLpC0nIf/oCifTKz0SYijzMVumMA5m8YVS+kLCdlIgjOOPY274kaqnIkEv8Iiyph vcwG8uCvN4v3A5G4ry7pRn75aAftfKHdtgjJczT4XfjOhhZoMYAVWbQqf1fWJf6VjcOV vOEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784208248; x=1784813048; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=myAuJMzKK/4iG9Cmnf7VPvLoMfqifqNKwX3ebA7nias=; b=eFpAsAqlZEuOO16El39OtbmIhyiLOqIMaPgZzJIVjakK5GN47P1lzxC26HHYTFInKs DtjQrF0nS56naPJE4BBUFHNiGze69S1IUrMVWCp/qRaRqaf+Hli3XyFGFtRSZLLe6ROl hZiCDBbReaTsrGuPId34Gf9pBoTf2wMzsUY74vybdOQk3dZlrTibcB4BgNc9cgWmdtyC H3xuDJdGaTSZnHjF3W2Kkhm/k5GBX4tw6hgFxcWS0WHr4+3pRiKgwiwcZ5le9l/Xtn9+ VS0OYD9nzYYzfem4iCBuFN8XIrk14X5jIfsWuA0WOF11fDuXJxEd+G1H1VjGHa+VBTk+ L2kw== X-Forwarded-Encrypted: i=1; AHgh+RrPHN1l50eFzHkQv8OSTE9rFz2K8KAPkR9e/C07e3mfCTZrXriMNMIoqekmuIKf48a3RYJopmE=@vger.kernel.org X-Gm-Message-State: AOJu0YzaorNSdPb3xjGql+mJfcrQKNUe671TS7j3kLJv+7Wmw+tKMGRL oJzvXsxihr8Jytw5cyjhGMF+4/VfmauLmRHPZN6vjcI03AUHfKrodYsf+C6/MioleAE= X-Gm-Gg: AfdE7ck+ru+kWoIuZuf3vAHG2jej7qVePblVsc3Sd12/uQ8zCX7WK7PHRszFuYZRWwm hw3p5P6qHI9c9Ff0OTtBf7faIFRXhV1mPYXphUy/GH4fLyJOQO4bumpStjXnBn+Jgro96ixu3vb kOl1m8F/5ZDccwuAnKEYllcsVjzolNXH/oQmvCKf2gonl20+AOgmYRbP99V1m2aZJquDDyuzUfF PJPAP6xzXTKf57kCxj24ixGquCKgY8+9/F6f5OXI4z54ASRtBWHdfDKVbyCqTYYJo1mwl3W36y7 09B1XBhe1V4mYTT68nihxkJgfUovIHXAfWQiDYkYGBoQNaXEvs0IaHk3KVvEinYbl1TrD4TaiR/ U1FrX+Wc6tQ6P6Txu5Zz/g9/zbpqFw5IBG/oisi5M4q+ETIXJTBvHSU/YfBhb1Rh7VnS3FhDQWS CsnMF0EIjIqW8= X-Received: by 2002:a05:600c:6094:b0:492:714d:8c4 with SMTP id 5b1f17b1804b1-495428801cfmr26808555e9.11.1784208248133; Thu, 16 Jul 2026 06:24:08 -0700 (PDT) Received: from localhost ([140.209.217.211]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4953c599049sm100313305e9.0.2026.07.16.06.24.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jul 2026 06:24:07 -0700 (PDT) From: Jiri Pirko To: linux-rdma@vger.kernel.org Cc: cgroups@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kselftest@vger.kernel.org, jgg@ziepe.ca, leon@kernel.org, parav@nvidia.com, mbloch@nvidia.com, cmeiohas@nvidia.com, roman.gushchin@linux.dev, bvanassche@acm.org, zyjzyj2000@gmail.com, shuah@kernel.org, tj@kernel.org, mkoutny@suse.com, hannes@cmpxchg.org, alibuda@linux.alibaba.com, dust.li@linux.alibaba.com, sidraya@linux.ibm.com, wenjia@linux.ibm.com, yanjun.zhu@linux.dev, cui.tao@linux.dev Subject: [PATCH rdma-next v3 12/14] RDMA/rxe: Allow queue VMAs to outlive ucontexts Date: Thu, 16 Jul 2026 15:23:13 +0200 Message-ID: <20260716132316.1495242-13-jiri@resnulli.us> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260716132316.1495242-1-jiri@resnulli.us> References: <20260716132316.1495242-1-jiri@resnulli.us> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jiri Pirko Prepare queue mappings for asynchronous ucontext disassociation during device disable. Rely on the VMA page references to preserve mapped memory until the final unmap. Signed-off-by: Jiri Pirko --- v1->v2: - new patch --- drivers/infiniband/sw/rxe/rxe_mmap.c | 35 ++-------------------------- 1 file changed, 2 insertions(+), 33 deletions(-) diff --git a/drivers/infiniband/sw/rxe/rxe_mmap.c b/drivers/infiniband/sw/rxe/rxe_mmap.c index 7f723a2f3700..a4ead89ccbd3 100644 --- a/drivers/infiniband/sw/rxe/rxe_mmap.c +++ b/drivers/infiniband/sw/rxe/rxe_mmap.c @@ -11,7 +11,6 @@ #include "rxe.h" #include "rxe_loc.h" -#include "rxe_queue.h" void rxe_mmap_release(struct kref *ref) { @@ -30,29 +29,6 @@ void rxe_mmap_release(struct kref *ref) kfree(ip); } -/* - * open and close keep track of how many times the memory region is mapped, - * to avoid releasing it. - */ -static void rxe_vma_open(struct vm_area_struct *vma) -{ - struct rxe_mmap_info *ip = vma->vm_private_data; - - kref_get(&ip->ref); -} - -static void rxe_vma_close(struct vm_area_struct *vma) -{ - struct rxe_mmap_info *ip = vma->vm_private_data; - - kref_put(&ip->ref, rxe_mmap_release); -} - -static const struct vm_operations_struct rxe_vm_ops = { - .open = rxe_vma_open, - .close = rxe_vma_close, -}; - /** * rxe_mmap - create a new mmap region * @context: the IB user context of the process making the mmap() call @@ -106,17 +82,10 @@ int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) list_del_init(&ip->pending_mmaps); spin_unlock_bh(&rxe->pending_lock); - vma->vm_ops = &rxe_vm_ops; - vma->vm_private_data = ip; - ret = remap_vmalloc_range(vma, ip->obj, 0); - if (ret) { - vma->vm_private_data = NULL; - vma->vm_ops = NULL; - kref_put(&ip->ref, rxe_mmap_release); + kref_put(&ip->ref, rxe_mmap_release); + if (ret) rxe_dbg_dev(rxe, "err %d from remap_vmalloc_range\n", ret); - goto done; - } done: return ret; -- 2.54.0