From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8501535B64B; Thu, 30 Apr 2026 03:25:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777519557; cv=none; b=A+lom9SgvoC5ZutrwzL9Cb/YD/v6g8lpWMKOWJQqz3FRZAdvndnLaRS4gciOqVFnkAL44fesL6rEq2NwB/vwqx0bK72aP7AZnnUGJW0xynaG8GU8i6pfXFN0SFQ1BGH/xDa4R9lPkPMH/2LWMvcrNo7LzynjJMgKDAK319SwdRk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777519557; c=relaxed/simple; bh=3A9sSPpTFnTSwNLnH2RiVekzHJbPnUK+mXyDzY4bjyk=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=hF4DQanB7nDIEnHKKWDnEcpT+BENzAjwoqCaVd1mQ0xaGdYKylFl+e73pRv07/uykrx+Iqk1nvHsAmen6d0vgyX/t5CsMVSdHWTvxGr3pfrjkym2h0s7USs5zHr3h+rdUVJ+a6ewTVhC1onsmnhQS9vcqxPteOcC8v1Zf82vAhI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PvM8my1I; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PvM8my1I" 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" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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