From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 29AB11C5F1B for ; Tue, 19 May 2026 20:17:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779221861; cv=none; b=bXQLuN4siE+4y7G5j9SnYF3Q5OALqBKRjdOgHMp5AaPxNoRnGL/F1zKvd+SYj6ajnRxYTVwpVTSWC80F+uUMy7w3IuNfVRcQdtDyakS/nAEVj49t5glu539a/gAvgjWASpvZcs1kR7aFMdrZpusvjIJbkC0kFiThLOKlCYeeR8A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779221861; c=relaxed/simple; bh=wSiAjwbMkUnBzMNCEzQ4QIlN97khyPWGXRKu/y0In58=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=F0UtKWAMDkbnPJjEaa7RwK4mH3XwGy0Po4uY6sMI8Oag/m6VNMmIXB7PEBs9i0N0NMXOeF0VGz7tcuxOPx3W4p+salyvfUhJlngHpGbcRDVLdWC9qE2g5M1kFiw46sZvUdEHFRseSft4DbStG3nmDBeAQq9Ui0JKIWKstecRsi0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=BS7h5UyL; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="BS7h5UyL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 503B81F000E9; Tue, 19 May 2026 20:17:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1779221859; bh=JgwMblJfIxEmaANWEuRgc49UNNTEJj4iwpCYVZQxH64=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=BS7h5UyLvMIY/o09LiVQZ5odLA7cvPjyIpzG2hY0oyp57jnKokHf9goMsQ8jOlvwn 7J7BT1MuRvlHydrdp9IFLZAzIyrf3jwDV7jsK4nsYIh2N7RHXQ9Q6NRwcF2yuVOzTm srRO+peKwLofUYR8xTKXKos1EE0OUwgvE+G13Kp8= Date: Tue, 19 May 2026 13:17:38 -0700 From: Andrew Morton To: Wen Jiang Cc: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, will@kernel.org, urezki@gmail.com, baohua@kernel.org, Xueyuan.chen21@gmail.com, dev.jain@arm.com, rppt@kernel.org, david@kernel.org, ryan.roberts@arm.com, anshuman.khandual@arm.com, ajd@linux.ibm.com, linux-kernel@vger.kernel.org, Wen Jiang Subject: Re: [PATCH v2 0/7] mm/vmalloc: Speed up ioremap, vmalloc and vmap with contiguous memory Message-Id: <20260519131738.11a78ba88e1be28ba5cb26eb@linux-foundation.org> In-Reply-To: <20260514094108.2016201-1-jiangwen6@xiaomi.com> References: <20260514094108.2016201-1-jiangwen6@xiaomi.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On Thu, 14 May 2026 17:41:01 +0800 Wen Jiang wro= te: > This patchset accelerates ioremap, vmalloc, and vmap when the memory > is physically fully or partially contiguous. >=20 > ... >=20 > On the RK3588 8-core ARM64 SoC, with tasks pinned to a little core and > the performance CPUfreq policy enabled, benchmark results: >=20 > * ioremap(1 MB): 1.35=D7 faster (3407 ns -> 2526 ns) > * vmalloc(1 MB) mapping time (excluding allocation) with > VM_ALLOW_HUGE_VMAP: 1.42=D7 faster (5.00 us -> 3.53us) > * vmap(100MB) with order-8 pages: 8.3=D7 faster (1235 us -> 149 us) Nice. AI review found a bunch of things to ask about: https://sashiko.dev/#/patchset/20260514094108.2016201-1-jiangwen6@xiaomi.c= om It doesn't appear that you'll be getting any more review on this series, so please check the above questions and resend?