From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C1DD2368D4D; Wed, 22 Jul 2026 17:31:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784741464; cv=none; b=hSRmAh1jkTThGuvTjPNLuTkqbxNG0vttbYTQQ6jBgZZWVtkeEiNSmqaHykuGb5CMTSiZQBmm/N5iHCll6XETkKxQq9pUy2fUqwagHWcz1akIXsHTZ20zdMaiyBbItrpWb9ih2a0V9nbT2L1UoG4VF6NKofebxEKyeELeQqma/50= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784741464; c=relaxed/simple; bh=24jF6AcUqs8OWEGAaLR69DLBQjR9hO+Rom+3K8DJQKo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=DrUPZX+HF7WQ9TaRZVwLMaRu5nRTeks742PZ8mdI8Vnq5MboVmAHs6OsjChy6+0eySjxxaPWZbF1wRlC6GbKErhw7OEQJFo4/LB2UmVVFbMUSNg7m8LgxRGijvPguIBL6dlyrjDoysUDiv3crcnDhRRVfQV5UW/kmFF+KkjQALI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=c73DPG7u; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="c73DPG7u" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EC1E21595; Wed, 22 Jul 2026 10:30:57 -0700 (PDT) Received: from e129823.arm.com (e129823.arm.com [10.2.213.3]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1CBCB3F66F; Wed, 22 Jul 2026 10:30:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1784741462; bh=24jF6AcUqs8OWEGAaLR69DLBQjR9hO+Rom+3K8DJQKo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=c73DPG7uUV5Fqsc83UkY57n5Qs0XXql23cCXWpZ2ZiqQ+ckAvgZYW4H6Qxd7IuEhg UpaREG+sGAYzR3v9TgE4TzXqEnrXG7rfKfeEIP65qzbz/5t2U9GCOzbaaUSYCknPsU WarfMW9lzNf8oKGScXg68Qq+UBElSke/y8/OuBEw= Date: Wed, 22 Jul 2026 18:30:52 +0100 From: Yeoreum Yun To: Dave Hansen Cc: Yeoreum Yun , Russell King , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Catalin Marinas , Will Deacon , Arnd Bergmann , Andrew Morton , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Johannes Weiner , David Hildenbrand , Michal Hocko , Lorenzo Stoakes , Tianrui Zhao , Bibo Mao , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonas Bonn , Stefan Kristiansson , Stafford Horne , linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-openrisc@vger.kernel.org Subject: Re: [PATCH RFC v2 00/20] mm: optimize unnecessary loads due to ptep_get() and friends out Message-ID: References: <20260722-dummy_ptxp3-v2-0-d9e4bad31e0a@arm.com> <0143b927-08c5-4e94-ae6e-2a0d7bfe950f@intel.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0143b927-08c5-4e94-ae6e-2a0d7bfe950f@intel.com> > One of my nits about v1 was that it didn't really frame the series > precisely. It talks about "optimization" instead of fundamentally > changing the way that the kernel deals with folded page table levels. > > The optimization that this *wants* to talk about kinda falls out of that > refactoring. It's not really the core of the series, IMNHO. > > This series effectively changes the rules about where and how folded > page table levels can be manipulated. In doing that, the door is opened > to optimizing out the unnecessary loads. I see. might the title and the cover letter should be reparsed. Thanks to remind it again :) -- Sincerely, Yeoreum Yun