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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747235659; bh=VtwAscQyUTlRhZtUQltGV4edyb2igJ5ad6uHqpn+WRE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mtpYjOSME//tW2/y4bFxZKPp3B5Ja5xV63HYq7wpQOJn2o6cQsf0XViPQLUMo6jgx M8BK8QREZ6B4bMEmer82tTJUoZAIZ9EsK2yBAGVZRAv3KFrimGX6lKVqiX/lKwzSzU RmNmfsJacG/YNCEvLQyvBvjjlIRquxImSiJ9A0fjuqFHnRZqz3yu1ksiJqWfeqx1yf LXPBIEGC1n+8ewTFdNatWZ1e8tFujqss0mjfK8vJceqjgV3bsXDz9+EgVWyN0xwkI5 PbG9m4BVDiCxgEhN2A7LdckrQ9KdWIqtTa/qjKT0uOGkfsj1UG9m2WfUPm5VnaZoBU LSMLMLHG88HmQ== From: Will Deacon To: Catalin Marinas , Pasha Tatashin , Andrew Morton , Uladzislau Rezki , Christoph Hellwig , David Hildenbrand , "Matthew Wilcox (Oracle)" , Mark Rutland , Anshuman Khandual , Alexandre Ghiti , Kevin Brodsky , Ryan Roberts Cc: kernel-team@android.com, Will Deacon , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, syzbot+5c0d9392e042f41d45c5@syzkaller.appspotmail.com Subject: Re: [PATCH] arm64/mm: Disable barrier batching in interrupt contexts Date: Wed, 14 May 2025 16:14:11 +0100 Message-Id: <174722567630.76853.13198140352994941416.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20250512102242.4156463-1-ryan.roberts@arm.com> References: <20250512102242.4156463-1-ryan.roberts@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 4AC94180013 X-Rspam-User: X-Stat-Signature: mehoazcxwtjxeeoxds733rgq1mwm87th X-HE-Tag: 1747235660-204243 X-HE-Meta: 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 SgGM+0w9 sWL/yw7nVT7arTTQUlvA1vFN/vWtT35KhXjmILoxTWsEluTGSSDBOwyG3olmDVtawXfM4gTIiXE1G29UtssorBE/wDXsq1eWjXZEKpJIayWPk5RgLkZREdRNFX9olVQJkyjQbOSS5DTaon0GTdMl+dqa0LE1Zc5poGewnl4qCHBtfMcZwJTPzVCMgKqaBko4OZbixvY+8713WM+7eYmn7A8XYLW3tBNqWHn3UMFeS/18KhUB7U4j1TY9oqWv75WO4WkcCxyspOG80UQWPphMUL+qk5m0XG+Th48drZdJj8ER1Ai6FcUVE4C2BMFZYnATwbWgruqddZWnm9cmFQKlirdv78gBObxf/ht6hEVhhukwPVg8ZkV1QuYnChAoVOMuI9g8FhlrT7u70xIb2017H+rhQHQ== 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 Mon, 12 May 2025 11:22:40 +0100, Ryan Roberts wrote: > Commit 5fdd05efa1cd ("arm64/mm: Batch barriers when updating kernel > mappings") enabled arm64 kernels to track "lazy mmu mode" using TIF > flags in order to defer barriers until exiting the mode. At the same > time, it added warnings to check that pte manipulations were never > performed in interrupt context, because the tracking implementation > could not deal with nesting. > > [...] Applied to arm64 (for-next/mm), thanks! [1/1] arm64/mm: Disable barrier batching in interrupt contexts https://git.kernel.org/arm64/c/b81c688426a9 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev