[{"id":3682878,"web_url":"http://patchwork.ozlabs.org/comment/3682878/","msgid":"","list_archive_url":null,"date":"2026-04-27T18:39:16","subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER\n to kconfig and reduce ifdefery","submitter":{"id":92516,"url":"http://patchwork.ozlabs.org/api/people/92516/","name":"Yury Norov","email":"ynorov@nvidia.com"},"content":"On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:\n> Among the 21 architectures supported by the kernel, 16 define both\n> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones\n> don't define any of the two.\n> \n> To simplify and reduce risk of mistakes, convert them to a single\n> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be\n\nWe've got a special word for it: outline. Can you name it\nCONFIG_OUTLINE_USERCOPY, or similar?\n\n> selected by the 5 architectures that don't want inlined copy.\n> \n> To minimise complication in a later patch, also remove\n> ifdefery and replace it with IS_ENABLED().\n> \n> Signed-off-by: Christophe Leroy (CS GROUP) \n\nAndrew has taken my consolidation patch for INLINE_COPY_USER:\n\nhttps://lore.kernel.org/all/20260427085814.7ca0b134603b8d5813e23396@linux-foundation.org/\n\nPlease base your series on top of it.\n\nI'm not sure this patch is relevant to the goal of your series. Maybe\nsend it separately?\n\nThanks,\nYury","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","sparclinux@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n header.s=selector2 header.b=pmvWhp/o;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; helo=mail.ozlabs.org;\n envelope-from=srs0=brax=c2=vger.kernel.org=sparclinux+bounces-6738-patchwork-incoming=ozlabs.org@ozlabs.org;\n receiver=patchwork.ozlabs.org)","gandalf.ozlabs.org;\n arc=fail smtp.remote-ip=172.105.105.114","gandalf.ozlabs.org;\n dmarc=pass (p=reject dis=none) header.from=nvidia.com","gandalf.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com 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,\n\tDavid Laight ,\n\tThomas Gleixner , linux-alpha@vger.kernel.org,\n\tYury Norov , linux-kernel@vger.kernel.org,\n\tlinux-snps-arc@lists.infradead.org,\n\tlinux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,\n\tlinux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,\n\tsparclinux@vger.kernel.org, linux-um@lists.infradead.org,\n\tdmaengine@vger.kernel.org, linux-efi@vger.kernel.org,\n\tlinux-fsi@lists.ozlabs.org, amd-gfx@lists.freedesktop.org,\n\tdri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,\n\tlinux-wpan@vger.kernel.org, netdev@vger.kernel.org,\n\tlinux-wireless@vger.kernel.org, linux-spi@vger.kernel.org,\n\tlinux-media@vger.kernel.org, linux-staging@lists.linux.dev,\n\tlinux-serial@vger.kernel.org, linux-usb@vger.kernel.org,\n\txen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org,\n\tocfs2-devel@lists.linux.dev, bpf@vger.kernel.org,\n\tkasan-dev@googlegroups.com, linux-mm@kvack.org,\n\tlinux-x25@vger.kernel.org, rust-for-linux@vger.kernel.org,\n\tlinux-sound@vger.kernel.org, sound-open-firmware@alsa-project.org,\n\tlinux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org,\n\tloongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org,\n\tlinux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org,\n\tlinux-sh@vger.kernel.org, linux-arch@vger.kernel.org","Subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER\n to kconfig and reduce ifdefery","Message-ID":"","References":"\n <9fe875d2f55af59c12708336c571a46038528678.1777306795.git.chleroy@kernel.org>","Content-Type":"text/plain; charset=us-ascii","Content-Disposition":"inline","In-Reply-To":"\n <9fe875d2f55af59c12708336c571a46038528678.1777306795.git.chleroy@kernel.org>","X-ClientProxiedBy":"BN9PR03CA0924.namprd03.prod.outlook.com\n (2603:10b6:408:107::29) To CY8PR12MB8300.namprd12.prod.outlook.com\n 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gandalf.ozlabs.org"}},{"id":3682979,"web_url":"http://patchwork.ozlabs.org/comment/3682979/","msgid":"","list_archive_url":null,"date":"2026-04-27T20:39:33","subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to\n kconfig and reduce ifdefery","submitter":{"id":10337,"url":"http://patchwork.ozlabs.org/api/people/10337/","name":"Andrew Cooper","email":"andrew.cooper3@citrix.com"},"content":"On 27/04/2026 7:39 pm, Yury Norov wrote:\n> On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:\n>> Among the 21 architectures supported by the kernel, 16 define both\n>> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones\n>> don't define any of the two.\n>>\n>> To simplify and reduce risk of mistakes, convert them to a single\n>> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be\n> We've got a special word for it: outline. Can you name it\n> CONFIG_OUTLINE_USERCOPY, or similar?\n\nYou can't swap the \"in\" for \"out\" like this.  \"out of line\" is the\nopposite of \"inline\" in this context, while \"outline\" means something\ndifferent and unrelated.\n\n~Andrew","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","sparclinux@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=citrix.com header.i=@citrix.com header.a=rsa-sha256\n header.s=selector1 header.b=mXaS/4S2;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; helo=mail.ozlabs.org;\n envelope-from=srs0=llt4=c2=vger.kernel.org=sparclinux+bounces-6743-patchwork-incoming=ozlabs.org@ozlabs.org;\n receiver=patchwork.ozlabs.org)","gandalf.ozlabs.org;\n arc=fail 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netdev@vger.kernel.org, linux-wireless@vger.kernel.org,\n linux-spi@vger.kernel.org, linux-media@vger.kernel.org,\n linux-staging@lists.linux.dev, linux-serial@vger.kernel.org,\n linux-usb@vger.kernel.org, xen-devel@lists.xenproject.org,\n linux-fsdevel@vger.kernel.org, ocfs2-devel@lists.linux.dev,\n bpf@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org,\n linux-x25@vger.kernel.org, rust-for-linux@vger.kernel.org,\n linux-sound@vger.kernel.org, sound-open-firmware@alsa-project.org,\n linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org,\n loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org,\n linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org,\n linux-sh@vger.kernel.org, linux-arch@vger.kernel.org","Subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to\n kconfig and reduce ifdefery","To":"Yury Norov ,\n \"Christophe Leroy (CS GROUP)\" ","References":"\n 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gandalf.ozlabs.org"}},{"id":3682985,"web_url":"http://patchwork.ozlabs.org/comment/3682985/","msgid":"","list_archive_url":null,"date":"2026-04-27T20:47:53","subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER\n to kconfig and reduce ifdefery","submitter":{"id":92516,"url":"http://patchwork.ozlabs.org/api/people/92516/","name":"Yury Norov","email":"ynorov@nvidia.com"},"content":"On Mon, Apr 27, 2026 at 09:39:33PM +0100, Andrew Cooper wrote:\n> On 27/04/2026 7:39 pm, Yury Norov wrote:\n> > On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:\n> >> Among the 21 architectures supported by the kernel, 16 define both\n> >> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones\n> >> don't define any of the two.\n> >>\n> >> To simplify and reduce risk of mistakes, convert them to a single\n> >> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be\n> > We've got a special word for it: outline. Can you name it\n> > CONFIG_OUTLINE_USERCOPY, or similar?\n> \n> You can't swap the \"in\" for \"out\" like this.  \"out of line\" is the\n> opposite of \"inline\" in this context, while \"outline\" means something\n> different and unrelated.\n\nCheck KASAN_OUTLINE vs KASAN_INLINE for example","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","sparclinux@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n header.s=selector2 header.b=Ekpevu7d;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; helo=mail.ozlabs.org;\n envelope-from=srs0=auuq=c2=vger.kernel.org=sparclinux+bounces-6744-patchwork-incoming=ozlabs.org@ozlabs.org;\n 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gandalf.ozlabs.org"}},{"id":3683306,"web_url":"http://patchwork.ozlabs.org/comment/3683306/","msgid":"<82e4eb62-4226-40b6-a1ef-4711f29a5e4f@citrix.com>","list_archive_url":null,"date":"2026-04-28T09:36:09","subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to\n kconfig and reduce ifdefery","submitter":{"id":10337,"url":"http://patchwork.ozlabs.org/api/people/10337/","name":"Andrew Cooper","email":"andrew.cooper3@citrix.com"},"content":"On 27/04/2026 9:47 pm, Yury Norov wrote:\n> On Mon, Apr 27, 2026 at 09:39:33PM +0100, Andrew Cooper wrote:\n>> On 27/04/2026 7:39 pm, Yury Norov wrote:\n>>> On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:\n>>>> Among the 21 architectures supported by the kernel, 16 define both\n>>>> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones\n>>>> don't define any of the two.\n>>>>\n>>>> To simplify and reduce risk of mistakes, convert them to a single\n>>>> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be\n>>> We've got a special word for it: outline. Can you name it\n>>> CONFIG_OUTLINE_USERCOPY, or similar?\n>> You can't swap the \"in\" for \"out\" like this.  \"out of line\" is the\n>> opposite of \"inline\" in this context, while \"outline\" means something\n>> different and unrelated.\n> Check KASAN_OUTLINE vs KASAN_INLINE for example\n\nThen I suggest it gets corrected before more examples try to copy this\nnon-english.\n\n~Andrew","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","sparclinux@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=citrix.com header.i=@citrix.com header.a=rsa-sha256\n header.s=selector1 header.b=yjaJCj7S;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; helo=mail.ozlabs.org;\n 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linux-sh@vger.kernel.org, linux-arch@vger.kernel.org","Subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to\n kconfig and reduce ifdefery","To":"Yury Norov ","References":"\n <9fe875d2f55af59c12708336c571a46038528678.1777306795.git.chleroy@kernel.org>\n \n ","Content-Language":"en-GB","From":"Andrew Cooper ","Autocrypt":"addr=andrew.cooper3@citrix.com; keydata=\n xsFNBFLhNn8BEADVhE+Hb8i0GV6mihnnr/uiQQdPF8kUoFzCOPXkf7jQ5sLYeJa0cQi6Penp\n VtiFYznTairnVsN5J+ujSTIb+OlMSJUWV4opS7WVNnxHbFTPYZVQ3erv7NKc2iVizCRZ2Kxn\n srM1oPXWRic8BIAdYOKOloF2300SL/bIpeD+x7h3w9B/qez7nOin5NzkxgFoaUeIal12pXSR\n Q354FKFoy6Vh96gc4VRqte3jw8mPuJQpfws+Pb+swvSf/i1q1+1I4jsRQQh2m6OTADHIqg2E\n ofTYAEh7R5HfPx0EXoEDMdRjOeKn8+vvkAwhviWXTHlG3R1QkbE5M/oywnZ83udJmi+lxjJ5\n YhQ5IzomvJ16H0Bq+TLyVLO/VRksp1VR9HxCzItLNCS8PdpYYz5TC204ViycobYU65WMpzWe\n LFAGn8jSS25XIpqv0Y9k87dLbctKKA14Ifw2kq5OIVu2FuX+3i446JOa2vpCI9GcjCzi3oHV\n e00bzYiHMIl0FICrNJU0Kjho8pdo0m2uxkn6SYEpogAy9pnatUlO+erL4LqFUO7GXSdBRbw5\n 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gandalf.ozlabs.org"}},{"id":3683415,"web_url":"http://patchwork.ozlabs.org/comment/3683415/","msgid":"","list_archive_url":null,"date":"2026-04-28T11:34:00","subject":"Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER\n to kconfig and reduce ifdefery","submitter":{"id":134,"url":"http://patchwork.ozlabs.org/api/people/134/","name":"Segher Boessenkool","email":"segher@kernel.crashing.org"},"content":"On Mon, Apr 27, 2026 at 09:39:33PM +0100, Andrew Cooper wrote:\n> On 27/04/2026 7:39 pm, Yury Norov wrote:\n> > On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:\n> >> Among the 21 architectures supported by the kernel, 16 define both\n> >> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones\n> >> don't define any of the two.\n> >>\n> >> To simplify and reduce risk of mistakes, convert them to a single\n> >> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be\n> > We've got a special word for it: outline. Can you name it\n> > CONFIG_OUTLINE_USERCOPY, or similar?\n> \n> You can't swap the \"in\" for \"out\" like this.  \"out of line\" is the\n> opposite of \"inline\" in this context, while \"outline\" means something\n> different and unrelated.\n\nYeah. Technically much more correct for it is inline vs. functional.\nNot that that term won't be misunderstood as well :-)\n\n\nSegher","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","sparclinux@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; helo=mail.ozlabs.org;\n envelope-from=srs0=w/u+=c3=vger.kernel.org=sparclinux+bounces-6752-patchwork-incoming=ozlabs.org@ozlabs.org;\n receiver=patchwork.ozlabs.org)","gandalf.ozlabs.org;\n arc=pass smtp.remote-ip=172.105.105.114 arc.chain=subspace.kernel.org","gandalf.ozlabs.org;\n dmarc=none (p=none dis=none) header.from=kernel.crashing.org","gandalf.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.105.105.114; helo=tor.lore.kernel.org;\n envelope-from=sparclinux+bounces-6752-patchwork-incoming=ozlabs.org@vger.kernel.org;\n receiver=ozlabs.org)","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=63.228.1.57","smtp.subspace.kernel.org;\n dmarc=none (p=none dis=none) header.from=kernel.crashing.org","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=kernel.crashing.org"],"Received":["from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g4fJC5KNwz1yHv\n\tfor ; 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