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Thu, 4 Jan 2024 15:31:19 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id cw50A0fPlmUBUAAAD6G6ig (envelope-from ); Thu, 04 Jan 2024 15:31:19 +0000 Date: Thu, 4 Jan 2024 16:31:17 +0100 From: Michal =?utf-8?Q?Koutn=C3=BD?= To: Pasha Tatashin Cc: akpm@linux-foundation.org, alim.akhtar@samsung.com, alyssa@rosenzweig.io, asahi@lists.linux.dev, baolu.lu@linux.intel.com, bhelgaas@google.com, cgroups@vger.kernel.org, corbet@lwn.net, david@redhat.com, dwmw2@infradead.org, hannes@cmpxchg.org, heiko@sntech.de, iommu@lists.linux.dev, jernej.skrabec@gmail.com, jonathanh@nvidia.com, joro@8bytes.org, krzysztof.kozlowski@linaro.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-rockchip@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, lizefan.x@bytedance.com, marcan@marcan.st, mhiramat@kernel.org, m.szyprowski@samsung.com, paulmck@kernel.org, rdunlap@infradead.org, robin.murphy@arm.com, samuel@sholland.org, suravee.suthikulpanit@amd.com, sven@svenpeter.dev, thierry.reding@gmail.com, tj@kernel.org, tomas.mudrunka@gmail.com, vdumpa@nvidia.com, wens@csie.org, will@kernel.org, yu-cheng.yu@intel.com, rientjes@google.com Subject: Re: [PATCH v3 00/10] IOMMU memory observability Message-ID: References: <20231226200205.562565-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="3miwvahtspdiywqu" Content-Disposition: inline In-Reply-To: <20231226200205.562565-1-pasha.tatashin@soleen.com> X-Spamd-Bar: / X-Rspamd-Queue-Id: 3E690140023 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: ju4cdwqjb5suzmf6azxgegiu8xddxhjy X-HE-Tag: 1704382281-636752 X-HE-Meta: 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 nn9CWtRa wBo+d5LiEr11ZT41qLw10HdpLx4C6/OVdNtOwdL4P1nl71m1wxwic7VzDpTg5UDwCVBU2MbSyptfX1hWrH0iet83NViUmWPdqB6hXen7qGwgZSGGPEf4AdjtB1HEakAA2adiGMSN/XJARXVaeHNwSL5JWA9IFRfhQjuMM0rGZevl+tvrrEom1RyeOQMClIwNOuc+9XbSqaSKYQBBUuv8/Bbq9IDK0bXaPuhkaM0IqKUesjTpoNg/LS4l4nEXxb6xhBAVxpK+vT5pkIfaMEue9/JN6mIMTDX9JuB2K4QtGCkXtrqOATz0OGv7I95W0i/SMu8JiLhGnENoq+xD+Y0ZBXQ3oNDUsmYz2N/VUnPMYUsVh0PG3Deb9CZoB6W6drioB8OVLmFHvcH7ewhGEE/ulkZzdoTC+Sd/8cz38Bp3AA6+JmluEhbopVX4IfSSWC6k32YeP663KzrFxin7dw6cP1fxQEQ/HnwARPURj 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: --3miwvahtspdiywqu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello. On Tue, Dec 26, 2023 at 08:01:55PM +0000, Pasha Tatashin wrote: > This patch series solves this problem by adding both observability to > all pages that are allocated by IOMMU, and also accountability, so > admins can limit the amount if via cgroups. Maybe this is a mismatch in vocabulary what you mean by the verb "limit". But I don't see in the patchset that the offending pages would be allocated with GFP_ACCOUNT. So the result is that the pages are accounted (you can view the amount in memory.stat) but they are not subject to memcg limits. Is that what you intend? Regards, Michal --3miwvahtspdiywqu Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQpEWyjXuwGT2dDBqAGvrMr/1gcjgUCZZbPOgAKCRAGvrMr/1gc jk4WAQCSVaG9CWTytNlHm4t/CSbpxTWFYWcybzn/jqIJ0y0DDgEA0/XJAjN4NyF+ F6HbClZ0bzyKHY2eGvX2UwXRtcfFPQM= =GWPV -----END PGP SIGNATURE----- --3miwvahtspdiywqu--