From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) (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 CF51C225A8 for ; Thu, 28 Mar 2024 23:34:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711668889; cv=none; b=ADiSR9spgz755DOpeYqcP4yBZTZBHSg4AEn/XH9Y6z1u2tjSOBu6ulInegnTgE3jsER6ezNjitCQIjgxa4wen7EUdR7rA9kd549/Ban3OtkdLGQdllk/8JtZ1CR7CKmDz7BEmXapmmEooAC5VBVyxtzz1kwWCQRiZ4K+tK2oLXM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711668889; c=relaxed/simple; bh=xjvyxtZ+j4cPbvv+hKOL5jE3H/iCtfhUd9DsFgDbvVA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=b1dmdQr7Af0Dfax/xD+RPphRs87WhtySc8Vz9hFh/QxoQ3ATuBpCsq6NXNDFAL9m1izmnmilFeAhQni1Btfxg8VvLCKhOfvIoiq9t7DrInN1eJgYqToM5G7Pf6Zm4OV4Mm8V8rFDasktjKXtJ/8Nq4X6Dqp9T1NVrhGa9DF2Zt8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=02I/p4tL; arc=none smtp.client-ip=209.85.214.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="02I/p4tL" Received: by mail-pl1-f170.google.com with SMTP id d9443c01a7336-1def81ee762so3337515ad.0 for ; Thu, 28 Mar 2024 16:34:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1711668887; x=1712273687; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=0oJgXvEuwvRnZZikuFCff+M/MPajPVlsVl5ZSdawolo=; b=02I/p4tLdn8ED8YLqRiWdfC3AKR6whKp8GtJFG5lU6SGN53YY2GelB8GM0xWOoByNM U330o3saO2H8Un8jFVwVKY+X9861s62xzsrpXne1LTGdZOSsYk/wz8ZVRyA3g5xielVt 5/cQ3XbMvO35GfJXJNxWOJbFUcV5uQoW4TMxTTiNId0oZDt4G8QC4U6lajfjZ4BRoSC4 vr3WNyguWzFYv0/l/lpFlrrvV+eu1J0GHFCYH7hGQF+zqtOzcke8wH8gHMpFi6GBUWpM EAmNa9KqovJgFChQpC4qnJ8Pvc9zFtLOJQkDE3R5fiAKWvy8YOI2x64ikjZIkAM11F1I 2aHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711668887; x=1712273687; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=0oJgXvEuwvRnZZikuFCff+M/MPajPVlsVl5ZSdawolo=; b=uGFwvB96siHJStWhWBC6BPUOjzspNc7gaRo8YXKXvnpdt3vtRwP+5n/8V8Xi4kM7jQ 96kDVr7TTWjHgf+IyF1mlWIDf9V+Yoo8WusNVsvyyzRfR8paxF7zjEaIumEm6UFkqM81 TM7mrLGbb0o3wMzN7VmCblZzD5BogTt9UXeKveKfleGQfiGkrKTuHdhT8MutFWDV//vF LYzGeg9DtY01HSqDPQ6njuwgAyr15SSPJ0JC9gkWSh0aUNpxNtgME0q31WpKL3BPbyZJ cB7bKhUjCOZ8WLBxKE5pOR7Gvhfi82w5wOfJbICA2bpggAurH4s8fopnXaRNuVLc0nXQ U9iQ== X-Gm-Message-State: AOJu0Yy/QY8dPc3o6RE0VzJMLTW0s8Z/yuDekLS1w2dEK2ot1vdNvInx 4G6wzFwVs9GdMVK4tMgRBcmxbvYVDUNTvTNdB435LBfLeDfPAqVEPiRW+/qovjUdTKzhYuE/Lzs d X-Google-Smtp-Source: AGHT+IHK8JxFi0VDT6pK3hMLieTrgE0yZTd3bgFh6m4Riav3CMt+1mc7AsG81NefeJjCRXPf52FG5w== X-Received: by 2002:a17:902:aa85:b0:1e0:b5f2:3284 with SMTP id d5-20020a170902aa8500b001e0b5f23284mr1034693plr.0.1711668886672; Thu, 28 Mar 2024 16:34:46 -0700 (PDT) Received: from localhost.localdomain ([50.234.116.5]) by smtp.gmail.com with ESMTPSA id i6-20020a170902c94600b001e0b3c9fe60sm2216981pla.46.2024.03.28.16.34.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Mar 2024 16:34:46 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org Cc: hannes@cmpxchg.org Subject: [PATCHSET v3 0/11] Move away from remap_pfn_range() Date: Thu, 28 Mar 2024 17:31:27 -0600 Message-ID: <20240328233443.797828-1-axboe@kernel.dk> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, This series switches both the ring, sqes, and kbuf side away from using remap_pfn_range(). Patch 1 is just a prep patch, and patches 2-3 add ring support, and patch 4 just unifies some identical code. Patches 5-7 cleanup some kbuf side code, and patch 8 prepares buffer lists to be reference counted, and then patch 9 can finally switch kbuf to also use the nicer vm_insert_pages(). Patch 10 is a cleanup, and patch 11 moves the alloc/pin/map etc code into a separate file. With this, no more remap_pfn_range(), and no more manual cleanup of having used it. Changes since v2: - Simplify references on compound pages (Johannes) - Fix hunk of one patch being wrong (Jeff) - Fix typo for !CONFIG_MMU (me) include/linux/io_uring_types.h | 4 - io_uring/Makefile | 3 +- io_uring/io_uring.c | 246 +----------------------- io_uring/io_uring.h | 5 - io_uring/kbuf.c | 291 ++++++++-------------------- io_uring/kbuf.h | 11 +- io_uring/memmap.c | 333 +++++++++++++++++++++++++++++++++ io_uring/memmap.h | 25 +++ io_uring/rsrc.c | 37 +--- mm/nommu.c | 7 + 10 files changed, 467 insertions(+), 495 deletions(-) -- Jens Axboe