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t=1780920012; bh=AQAir/XhNgzln0FRrf8cgFa/spk0WCi7bswkv8ztqtM=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=VbshWzMbj8MuZE3fQBjIspMvk6Z4L2Uwp7JKBQDi7zG7PNGbjZK3FOiOyMtngTPId CkklEcZg91CINj0HiWVC9Gfc80+yDZibAE9nBvMPSJTfxTDEKqHrb0lb9w8/An9BC3 9Xl+UnrxOrfGTQCSmcitJ3pVQ+6LKwQMJfY9ZcsX0XNPtKpQEkuSgjGS1npPm8Yabj zZCHUyW7t0Cx/M5eZPzlXgSExpuE5ueuuJ4zMNjja8Xlq35MjDAuiHyJtDoilmbwy8 gC7j2SZOAcubRcT42zNoLs8sKFkCNY8v/D8sxnqGqf1kS1gPjGB+j6ydvtKLiE/0tK p8dcPzmqCGdgA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 938DC3930D69; Mon, 8 Jun 2026 12:00:12 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH v2 bpf-next] arm64: mm: Complete the PTE store in ptep_try_set() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178092001114.1007295.14338085080112012433.git-patchwork-notify@kernel.org> Date: Mon, 08 Jun 2026 12:00:11 +0000 References: <7f5f7c94601312c1a401fb18998291cc@kernel.org> In-Reply-To: <7f5f7c94601312c1a401fb18998291cc@kernel.org> To: Tejun Heo Cc: catalin.marinas@arm.com, will@kernel.org, ast@kernel.org, david@kernel.org, arighi@nvidia.com, memxor@gmail.com, akpm@linux-foundation.org, rppt@kernel.org, andrii@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, eddyz87@gmail.com, yonghong.song@linux.dev, emil@etsalapatis.com, void@manifault.com, changwoo@igalia.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 79C24100009 X-Rspam-User: X-Stat-Signature: kt1tyyj98718uu7dgea6tkqhn3axqotk X-HE-Tag: 1780920013-886516 X-HE-Meta: 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 qHrw+hgm 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello: This patch was applied to bpf/bpf-next.git (master) by Kumar Kartikeya Dwivedi : On Sun, 07 Jun 2026 21:25:47 -1000 you wrote: > ptep_try_set() installs a kernel PTE with try_cmpxchg() but, unlike > __set_pte(), skips the barriers that arm64 requires after writing a valid > kernel PTE. Without them a subsequent access can fault instead of seeing > the new mapping. > > Issue them with emit_pte_barriers() rather than __set_pte_complete(). > ptep_try_set() must finish the store before it returns, but > __set_pte_complete() would defer the barriers when the calling context is in > lazy MMU mode. > > [...] Here is the summary with links: - [v2,bpf-next] arm64: mm: Complete the PTE store in ptep_try_set() https://git.kernel.org/bpf/bpf-next/c/71385b78dbc2 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html