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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EDF73FF8875 for ; Thu, 30 Apr 2026 03:26:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 63AEB6B008C; Wed, 29 Apr 2026 23:26:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 613366B0092; Wed, 29 Apr 2026 23:26:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 528646B0093; Wed, 29 Apr 2026 23:26:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 43A286B008C for ; Wed, 29 Apr 2026 23:26:00 -0400 (EDT) Received: from smtpin01.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id EB0901B98E7 for ; Thu, 30 Apr 2026 03:25:59 +0000 (UTC) X-FDA: 84713783238.01.FF9AA80 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf22.hostedemail.com (Postfix) with ESMTP id 4F1A8C0005 for ; Thu, 30 Apr 2026 03:25:58 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=PvM8my1I; spf=pass (imf22.hostedemail.com: domain of patchwork-bot+linux-riscv@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=patchwork-bot+linux-riscv@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1777519558; 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=LXhOAcmYnCD9USewCHVAQkUCf2Ty94DfND3RLOI2CXo=; b=3TXxDsAkn5XUQz+MqJpk0O0stGr4Mfz/b5uj3FAYvik8lBC781eGkxEE5Y2xd7RscutGz6 nouMM2FLOZCn0DUgvcWFrFhussmIdP9gH4ISQ63hlb7I2ITeIomr/ij5sf143zFUKHOdhl hUzfei67EHQasIBjbKXFj/T3pgKAbUc= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1777519558; a=rsa-sha256; cv=none; b=o8tPLTFXyD2cMEMuhr8Xe53+N0KEtRvOCHr4oFUpKORDrd4q4RjWIN/3UgN8HgjHQBw24K lX7SqTeBP5E8Tu/qYe4L0zBUXuFLokdSLW4rOwdahHAQ3mLfaKIGN6Jtk1fr8YuJXfHA1Q QWqSmKjLZ5Bvd/30jBN4YIrtpqHjedc= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=PvM8my1I; spf=pass (imf22.hostedemail.com: domain of patchwork-bot+linux-riscv@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=patchwork-bot+linux-riscv@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 83710444C0; Thu, 30 Apr 2026 03:25:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 662B9C2BCB8; Thu, 30 Apr 2026 03:25:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777519557; bh=3A9sSPpTFnTSwNLnH2RiVekzHJbPnUK+mXyDzY4bjyk=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=PvM8my1IW2Yjwupoq66vKLJIr1YZ/KioPkhJQkE7eo14dAk8o2H6RNfUatGZ2Au9S 91HQM/8YvYPRiw98kHgqVpZmSf7VnKX3GtzG7tbbozHcDgaRlvxBU0lZAMm+aj7cPh qT6q1tde0FqSYSPt0N2fidtUIF1aUhoMl4reQhuruOMGgj3cRRvZeoBRiI4AEgorg0 StaKda1S6UYGl5kKlqXb2yBN8WQ8cq7wMowo/Uy/ler0ew/dVewdsp0hCgMvA54aza CunUoeLgN5/VA34GkpqJiUE2zYwO5PBQl4g1nYfrAsGa+cekkOMHiB31Rm0HDxSQeo il5OF8PZWn6WQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id BA3583809A07; Thu, 30 Apr 2026 03:25:13 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCHv7 16/18] mm: Remove the branch from compound_head() From: patchwork-bot+linux-riscv@kernel.org Message-Id: <177751951229.2274119.12563342067361093997.git-patchwork-notify@kernel.org> Date: Thu, 30 Apr 2026 03:25:12 +0000 References: <20260227193030.272078-16-kas@kernel.org> In-Reply-To: <20260227193030.272078-16-kas@kernel.org> To: Kiryl Shutsemau (Meta) Cc: linux-riscv@lists.infradead.org, akpm@linux-foundation.org, muchun.song@linux.dev, david@redhat.com, willy@infradead.org, usamaarif642@gmail.com, fvdl@google.com, osalvador@suse.de, rppt@kernel.org, vbabka@suse.cz, lorenzo.stoakes@oracle.com, ziy@nvidia.com, bhe@redhat.com, mhocko@suse.com, hannes@cmpxchg.org, corbet@lwn.net, chenhuacai@kernel.org, kernel@xen0n.name, palmer@dabbelt.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu, alex@ghiti.fr, kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, david@kernel.org X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 4F1A8C0005 X-Stat-Signature: ok5curt5c3s6mmnicojp3r1q8cwbbgxw X-Rspam-User: X-HE-Tag: 1777519558-414783 X-HE-Meta: U2FsdGVkX1+9ppEgqoUyaBysokWWQluI9eUauiFDroxO+rrAgV/MSrI1qovPLVWc0i9y+K7AKth7k7c1/Gdaa//b0t2klv6QqO6axCjhljQ0av+GcPGpakCOiops1XmqrZx/MBo2Il6ar2Ld7ZjhQkx5OmDSXlkYwGLB6TUe+d63yYz28hluQdlKcA9GWAUinN6ftov0YIK6hwMjtVrU8JI0jTz9Ht/Dm8lietSEFGz++U5jmtdhlcFcu+uwUAnPmt9PMnkBjA3J6ionj+TVqsTusG+0u6K7yDeOXLDqYw7IcoIY+4V2G6LN758huT5Kr+4AdiiX//F0KKktgmlbGaS0LkyN58DNTtx11eJ5+vgGbyEw8LWbaeRkSWl4VAtFzFSop6R5wrfcxuHahiCsgIV+afyrCtqMtcgVE7DvU4dDjGl5N19V9JRSkbdlqBxoHSk52LYiMhKqct4p90nWJypdAJAjpC/DKBUi+pQK1De9JkFJkE2c9o/tj3tWugdlFPb90Z0+ZXkZ0Txu48z9ySp8UiDCpASUf8Z+1fsURmIAmrimwt8iRuvZy1F8szd1Qtu7LXNR2EtfP8+wD1QRgsxati3ebSuYsuYhrn6MO474OIPxnQCa+kCMzhfHzOKBTO5qosya73gT8YXlg2cMdWpYtjIY5QsNvizN5sAGRO7rpCwDsfOHqA0kn3RYD2hgYj0V/x4MtCjOvlEn0TE7B4yRow/2mgRHq39c/3wq7ZmGsHvVm9jTVR5xUFunWGWavE8stP/HWErD5g4Y46BCiHA60/+npOQF+IV2ADDsvBXJs0t4QL2NpufOBdh6ZILszYjDZqH+tz4i3a7FPTO6HbkMSx9qN17B4erHnuRhW/QgPpmQUcEdMNlkFzEl4rag67f/4j+GP/gzm3X9xKj1Tj+izhbfRH9sbI7Wj4yrUza+AShqb2FZA+5BrY+UFjLqgU2oniIBO2kQQq+mpix 7voMbMyO eynp9Fr4h+ZcQ3nqWNcdR5fOFOa24JcqJTQLC+n969+8bdCgdPrCtpGjKiII4sBRms5Efvhf7H1iDVP0/jKOcK3ARnuat9cUrQRlKuzc15ET/2nv8qgdhdrBTiAjZ+kEHP1EmaAr1J8PsJ7YKu4tl5twRVndYQz7Aksprc5kE0XjxuPZk3HzN9Z4Aaj2YJhNVoamAlhj0q8aOwWYZkD4iuMzREGbRJmk+vm3PXtaHetLEB1Z+fGIAfQRaZlLCULqzxFBZs8XVk9me704ge3XVIFs7+bFeBbVEinI5Y1czKb5X8/COIOSOo65XTwcEufjUU56pfaLT25cHZtPQZo0tACzXFL+B+GwvMXswU0hy8IsqrXv1NzlRdXqqqQLYGmp8ewBc/cFV5QmJAh6TXYpnEboeOOHMMtbMjowQRcAx1RW/3qC9f3/z8rPzWUSMhOZzGfRUyFOT/HwQcqmP2pFwNOISmHJL6ba7Uy3Y 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 riscv/linux.git (fixes) by Andrew Morton : On Fri, 27 Feb 2026 19:30:17 +0000 you wrote: > From: Kiryl Shutsemau > > The compound_head() function is a hot path. For example, the zap path > calls it for every leaf page table entry. > > Rewrite the helper function in a branchless manner to eliminate the risk > of CPU branch misprediction. > > [...] Here is the summary with links: - [PATCHv7,16/18] mm: Remove the branch from compound_head() https://git.kernel.org/riscv/c/66b2a3d9ae46 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html