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 X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F390FC433ED for ; Fri, 14 May 2021 14:31:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D240861462 for ; Fri, 14 May 2021 14:31:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232548AbhENOca (ORCPT ); Fri, 14 May 2021 10:32:30 -0400 Received: from mx2.suse.de ([195.135.220.15]:57158 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230141AbhENOca (ORCPT ); Fri, 14 May 2021 10:32:30 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 3064FB19B; Fri, 14 May 2021 14:31:18 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 4C8E5DAF1B; Fri, 14 May 2021 16:28:47 +0200 (CEST) Date: Fri, 14 May 2021 16:28:47 +0200 From: David Sterba To: Qu Wenruo Cc: Su Yue , linux-btrfs@vger.kernel.org Subject: Re: [PATCH] btrfs-progs: do not BUG_ON if btrfs_add_to_fsid succeeded to write superblock Message-ID: <20210514142846.GW7604@suse.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Qu Wenruo , Su Yue , linux-btrfs@vger.kernel.org References: <20210511042501.900731-1-l@damenly.su> <20210512140135.GR7604@twin.jikos.cz> <20210514112243.GT7604@suse.cz> <347443f7-b26c-04ac-88c2-2d1e490b7115@gmx.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <347443f7-b26c-04ac-88c2-2d1e490b7115@gmx.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Fri, May 14, 2021 at 09:50:00PM +0800, Qu Wenruo wrote: > > Right, I initially booted the kvm using Ubuntu kernel built with 4k > > pages then compiled 16k pagesize kernel manully. > > Are you sure it's really no 64K page support? > > For example, maybe it's the fault of the VM UEFI you're using doesn't > support 64K page size? It's been said on various sites that analyzed the chip that it's 16k and there's not much official specs. Here's the most specific number regarding page size and also effects on caches (and other perf characteristics). https://www.anandtech.com/show/16226/apple-silicon-m1-a14-deep-dive/2