From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59516C47DDB for ; Fri, 26 Jan 2024 08:51:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6B7F96B00AF; Fri, 26 Jan 2024 03:51:25 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 669946B00C6; Fri, 26 Jan 2024 03:51:25 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4E22F6B00C9; Fri, 26 Jan 2024 03:51:25 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 3B8A66B00AF for ; Fri, 26 Jan 2024 03:51:25 -0500 (EST) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id EE313C053C for ; Fri, 26 Jan 2024 08:51:24 +0000 (UTC) X-FDA: 81720843288.03.BD716D5 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf18.hostedemail.com (Postfix) with ESMTP id 792711C0019 for ; Fri, 26 Jan 2024 08:51:22 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=J5T251s+; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf18.hostedemail.com: domain of krzk@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=krzk@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1706259083; a=rsa-sha256; cv=none; b=OuzpYmM///izDRvfrSPY016SXRVYzVuIaPdqCsAXL7sdR3qXSPCYYgNFlT0HVm+co4pp3l xxt07WTM2fxp3DNgDzE5ABPU1JLShq6WsicT4BXd6lNcPzuHAgLnl/Zq2eA1M7PmScwFZ8 OSGCabzFKNtiQN977q38oGdMVZKLWnE= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=J5T251s+; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf18.hostedemail.com: domain of krzk@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=krzk@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1706259083; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=D2Ryk3VEYASlPSKxSF/HY288XVsJVskOr842a7WpiO0=; b=mOEuDKjy4KkAUf8UHMOvONJYLlmStGFvqEi9AzrApHlUByqI2jr1HyGLxdRyyXNQd06nTq hu6P/tD/gzyopnr6RQW1+VgVo2Yzh8Sx+eD6urHjRad6eT1ZqHb1HW/Q3MNjNbKLgI6d6G +7tK08emxkxfGpHx4NHGLUltCtA54ss= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 884B6CE3680; Fri, 26 Jan 2024 08:51:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B9D0C433C7; Fri, 26 Jan 2024 08:51:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706259075; bh=3XXsZesR5z3OhQn6zEFimHzAIMaks6mfbzGYjcwVnzI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=J5T251s+q/OwxjAgPmVxtcll+74iQnRmWb+BhB3KK5MyL8SMv+TTKWMWq2snsc7EI E1VBQyTib/Vjih2wWfjunpv8SIOlEGf7JLZ9GRK2pB7QBup/WxAC7Azcf0AhYM9ybU JZFaMKbf6okVil/kjHyiE8yl0d4NcnSe5o324okA/FM6f4o5dwOH7kb5GJf9AKy1yD uojpObGHUoEPD93zH6uAja88lzdACNNHiUIGzjks/Hn8FXtphEo+i40HFf/u9WXIup fIqATHk3If1ICrsc69qbc0PYfDi0eqZUSsNIbR7/hg/66L0KbaGoAOjDqZCA03RxKt E004d0i/z+ong== Message-ID: <5b8ce251-0790-4e2c-b5b1-0d2aeacbdd92@kernel.org> Date: Fri, 26 Jan 2024 09:50:58 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC v3 19/35] arm64: mte: Discover tag storage memory Content-Language: en-US To: Alexandru Elisei , catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org References: <20240125164256.4147-1-alexandru.elisei@arm.com> <20240125164256.4147-20-alexandru.elisei@arm.com> From: Krzysztof Kozlowski Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJgPO8PBQkUX63hAAoJEBuTQ307 QWKbBn8P+QFxwl7pDsAKR1InemMAmuykCHl+XgC0LDqrsWhAH5TYeTVXGSyDsuZjHvj+FRP+ gZaEIYSw2Yf0e91U9HXo3RYhEwSmxUQ4Fjhc9qAwGKVPQf6YuQ5yy6pzI8brcKmHHOGrB3tP /MODPt81M1zpograAC2WTDzkICfHKj8LpXp45PylD99J9q0Y+gb04CG5/wXs+1hJy/dz0tYy iua4nCuSRbxnSHKBS5vvjosWWjWQXsRKd+zzXp6kfRHHpzJkhRwF6ArXi4XnQ+REnoTfM5Fk VmVmSQ3yFKKePEzoIriT1b2sXO0g5QXOAvFqB65LZjXG9jGJoVG6ZJrUV1MVK8vamKoVbUEe 0NlLl/tX96HLowHHoKhxEsbFzGzKiFLh7hyboTpy2whdonkDxpnv/H8wE9M3VW/fPgnL2nPe xaBLqyHxy9hA9JrZvxg3IQ61x7rtBWBUQPmEaK0azW+l3ysiNpBhISkZrsW3ZUdknWu87nh6 eTB7mR7xBcVxnomxWwJI4B0wuMwCPdgbV6YDUKCuSgRMUEiVry10xd9KLypR9Vfyn1AhROrq AubRPVeJBf9zR5UW1trJNfwVt3XmbHX50HCcHdEdCKiT9O+FiEcahIaWh9lihvO0ci0TtVGZ MCEtaCE80Q3Ma9RdHYB3uVF930jwquplFLNF+IBCn5JRzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmA872oFCRRflLYACgkQG5NDfTtBYpvScw/9GrqBrVLuJoJ52qBBKUBDo4E+5fU1bjt0 Gv0nh/hNJuecuRY6aemU6HOPNc2t8QHMSvwbSF+Vp9ZkOvrM36yUOufctoqON+wXrliEY0J4 ksR89ZILRRAold9Mh0YDqEJc1HmuxYLJ7lnbLYH1oui8bLbMBM8S2Uo9RKqV2GROLi44enVt vdrDvo+CxKj2K+d4cleCNiz5qbTxPUW/cgkwG0lJc4I4sso7l4XMDKn95c7JtNsuzqKvhEVS oic5by3fbUnuI0cemeizF4QdtX2uQxrP7RwHFBd+YUia7zCcz0//rv6FZmAxWZGy5arNl6Vm lQqNo7/Poh8WWfRS+xegBxc6hBXahpyUKphAKYkah+m+I0QToCfnGKnPqyYIMDEHCS/RfqA5 t8F+O56+oyLBAeWX7XcmyM6TGeVfb+OZVMJnZzK0s2VYAuI0Rl87FBFYgULdgqKV7R7WHzwD uZwJCLykjad45hsWcOGk3OcaAGQS6NDlfhM6O9aYNwGL6tGt/6BkRikNOs7VDEa4/HlbaSJo 7FgndGw1kWmkeL6oQh7wBvYll2buKod4qYntmNKEicoHGU+x91Gcan8mCoqhJkbqrL7+nXG2 5Q/GS5M9RFWS+nYyJh+c3OcfKqVcZQNANItt7+ULzdNJuhvTRRdC3g9hmCEuNSr+CLMdnRBY fv0= In-Reply-To: <20240125164256.4147-20-alexandru.elisei@arm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 792711C0019 X-Stat-Signature: jiumn4cwiqsyrujyyu8gqy5oeaigzdb7 X-HE-Tag: 1706259082-656588 X-HE-Meta: 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 S1dIaJ4Q 38Gpvq2D3EnXzjE893PCJSKF5rIBs2+SUrmnzGXuJWsP9oq+TCUvK/aVcwUIre2QJvCnUQ6x4LhYT4Ul6qg7H4yOOTO+j76eFCsZrbQ2+dsU35+7toLkegbgFqqHJ8nH+zTzMFDmKvym4n1KfmFyBQz9hYrxhFOEeqYfJR9aY0X/CCmljVw3+eyp2oSuh457w7JBo+eNL3h7jhOPhIGRPGZ7MDeSS65rLflRIq6cfClSEMoZ2GeIBxL9iFieJulrTMZvZLqGXnNAVG9lhKz8TVrY+YI26LVNX3S9M X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 25/01/2024 17:42, Alexandru Elisei wrote: > Allow the kernel to get the base address, size, block size and associated > memory node for tag storage from the device tree blob. > Please use scripts/get_maintainers.pl to get a list of necessary people and lists to CC. It might happen, that command when run on an older kernel, gives you outdated entries. Therefore please be sure you base your patches on recent Linux kernel. Tools like b4 or scripts_getmaintainer.pl provide you proper list of people, so fix your workflow. Tools might also fail if you work on some ancient tree (don't, use mainline), work on fork of kernel (don't, use mainline) or you ignore some maintainers (really don't). Just use b4 and all the problems go away. You missed at least devicetree list (maybe more), so this won't be tested by automated tooling. Performing review on untested code might be a waste of time, thus I will skip this patch entirely till you follow the process allowing the patch to be tested. Please kindly resend and include all necessary To/Cc entries. > A tag storage region represents the smallest contiguous memory region that > holds all the tags for the associated contiguous memory region which can be > tagged. For example, for a 32GB contiguous tagged memory the corresponding > tag storage region is exactly 1GB of contiguous memory, not two adjacent > 512M of tag storage memory, nor one 2GB tag storage region. > > Tag storage is described as reserved memory; future patches will teach the > kernel how to make use of it for data (non-tagged) allocations. > > Signed-off-by: Alexandru Elisei > --- > > Changes since rfc v2: > > * Reworked from rfc v2 patch #11 ("arm64: mte: Reserve tag storage memory"). > * Added device tree schema (Rob Herring) > * Tag storage memory is now described in the "reserved-memory" node (Rob > Herring). > > .../reserved-memory/arm,mte-tag-storage.yaml | 78 +++++++++ Please run scripts/checkpatch.pl and fix reported warnings. Some warnings can be ignored, but the code here looks like it needs a fix. Feel free to get in touch if the warning is not clear. Best regards, Krzysztof