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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C05D4C6379F for ; Mon, 13 Feb 2023 01:27:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229709AbjBMB1H (ORCPT ); Sun, 12 Feb 2023 20:27:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229468AbjBMB1G (ORCPT ); Sun, 12 Feb 2023 20:27:06 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CF4CEB4F; Sun, 12 Feb 2023 17:27:05 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BABB760DFD; Mon, 13 Feb 2023 01:27:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CC29C433D2; Mon, 13 Feb 2023 01:26:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676251624; bh=pgBUeo8liI0s6ek7TqeHWnNdId7/PxzL//1niqaJld4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=k2F0Wjc3QZMPuc5srm1Uo6lh7DtJEgv5IlU00OIY/g3/oDmwNPK6vJ5mQLe6zmVrZ U7Qf9xDiV06Q1jflce9qkhXfkc1L6KRYpke8THr9inSs6C0A1otBnGQNf8uF3cegrG 0EmGevUaEIDKsnNmf8ZIAVce1Z4AArOyR1csZlUiMjSIKmKH8MO7Hyaem7TY9a1GEj /SbSFhoFkx3AJUFAXowUvw9JrdQQfq+lGUITVEsyDg1W74fq+wDnkm3XGeS8Pklcvf 5Csxvk8nJ+MA2NJIxi5jp+cpyC0bXkipJo3PVapLRiTQVfyphFUD+Ia9usI95Mzr9H V7q1GNDMLixEg== Date: Mon, 13 Feb 2023 03:26:39 +0200 From: Mike Rapoport To: Guenter Roeck Cc: Andrew Morton , Arnd Bergmann , Brian Cain , "David S. Miller" , Dinh Nguyen , Geert Uytterhoeven , Greg Ungerer , Guo Ren , Helge Deller , Huacai Chen , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Palmer Dabbelt , Rich Felker , Richard Weinberger , Russell King , Stafford Horne , Thomas Bogendoerfer , Vineet Gupta , WANG Xuerui , Yoshinori Sato , linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, openrisc@lists.librecores.org, sparclinux@vger.kernel.org, x86@kernel.org, Huacai Chen Subject: Re: [PATCH v2 4/4] mm, arch: add generic implementation of pfn_valid() for FLATMEM Message-ID: References: <20230129124235.209895-1-rppt@kernel.org> <20230129124235.209895-5-rppt@kernel.org> <20230212161320.GA3784076@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230212161320.GA3784076@roeck-us.net> Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org On Sun, Feb 12, 2023 at 08:13:20AM -0800, Guenter Roeck wrote: > On Sun, Jan 29, 2023 at 02:42:35PM +0200, Mike Rapoport wrote: > > From: "Mike Rapoport (IBM)" > > > > Every architecture that supports FLATMEM memory model defines its own > > version of pfn_valid() that essentially compares a pfn to max_mapnr. > > > > Use mips/powerpc version implemented as static inline as a generic > > implementation of pfn_valid() and drop its per-architecture definitions. > > > > With this patch in the tree, sh4 and sh4eb qemu emulations no longer boot. > Reverting this patch fixes the problem. This should be a better fix than a revert: diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 506784702430..bf1b54055316 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -301,6 +301,7 @@ void __init paging_init(void) */ max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT; min_low_pfn = __MEMORY_START >> PAGE_SHIFT; + set_max_mapnr(max_low_pfn - min_low_pfn); nodes_clear(node_online_map); > Guenter > > --- > # bad: [6ba8a227fd19d19779005fb66ad7562608e1df83] Add linux-next specific files for 20230210 > # good: [4ec5183ec48656cec489c49f989c508b68b518e3] Linux 6.2-rc7 > git bisect start 'HEAD' 'v6.2-rc7' > # good: [94613f0efc69ed41f9229ef5c294db3ec37145da] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git > git bisect good 94613f0efc69ed41f9229ef5c294db3ec37145da > # good: [19e62c715fe70dae4582c2874ed3e66715d09af6] Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git > git bisect good 19e62c715fe70dae4582c2874ed3e66715d09af6 > # good: [5d8b7ecef7f4a681b6e5538db59ff26c389c0ab6] Merge branch 'for-next' of https://gitlab.com/peda-linux/mux.git > git bisect good 5d8b7ecef7f4a681b6e5538db59ff26c389c0ab6 > # good: [c349bf6ec83903b20fe570c5609b9a864a64e09c] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode.git > git bisect good c349bf6ec83903b20fe570c5609b9a864a64e09c > # good: [5a06a9f17454df38f35672be522ff5eb9b4277d2] selftest: add testing unsharing and counting ksm zero page > git bisect good 5a06a9f17454df38f35672be522ff5eb9b4277d2 > # bad: [f5d115a7b06e5661ed5218ffa9a2644c4ff1c135] Merge branch 'mm-nonmm-unstable' into mm-everything > git bisect bad f5d115a7b06e5661ed5218ffa9a2644c4ff1c135 > # bad: [acb018d6ea0c055381fba7dddaef386ee28f8075] mm/vmalloc.c: allow vread() to read out vm_map_ram areas > git bisect bad acb018d6ea0c055381fba7dddaef386ee28f8075 > # good: [1a5d9782ac969dc6e61c6786500b5160603188ea] mm/mmap: remove __vma_adjust() > git bisect good 1a5d9782ac969dc6e61c6786500b5160603188ea > # good: [4b32363697de957dcc890b6245bec3f58903639a] arm: include asm-generic/memory_model.h from page.h rather than memory.h > git bisect good 4b32363697de957dcc890b6245bec3f58903639a > # bad: [328cf3fa6682ce6a4de6f8bb8009c833dc33f3c8] mm/migrate: convert isolate_movable_page() to use folios > git bisect bad 328cf3fa6682ce6a4de6f8bb8009c833dc33f3c8 > # bad: [b704c765b08cabe82adf76a4d1a74f3688eee410] mm/mempolicy: convert queue_pages_pmd() to queue_folios_pmd() > git bisect bad b704c765b08cabe82adf76a4d1a74f3688eee410 > # bad: [e5734c8b0edfd2a053a5c256189586a3b1e9f63d] mm, arch: add generic implementation of pfn_valid() for FLATMEM > git bisect bad e5734c8b0edfd2a053a5c256189586a3b1e9f63d > # good: [ad8aecea034c591b9754bc5908da9719853aa7fa] mips: drop definition of pfn_valid() for DISCONTIGMEM > git bisect good ad8aecea034c591b9754bc5908da9719853aa7fa > # first bad commit: [e5734c8b0edfd2a053a5c256189586a3b1e9f63d] mm, arch: add generic implementation of pfn_valid() for FLATMEM -- Sincerely yours, Mike.