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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3835BC636D4 for ; Mon, 13 Feb 2023 07:55:45 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4PFc8b0FDgz3cFT for ; Mon, 13 Feb 2023 18:55:43 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=P/NLBLn1; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=145.40.68.75; helo=ams.source.kernel.org; envelope-from=rppt@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=P/NLBLn1; dkim-atps=neutral Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4PFc7W2PsCz2x9J for ; Mon, 13 Feb 2023 18:54:47 +1100 (AEDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 16B7EB80E01; Mon, 13 Feb 2023 07:54:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3884FC433EF; Mon, 13 Feb 2023 07:54:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676274881; bh=6metnuiv9QkmKFu+JTHLVBvZLre3nFtuNi3AR7PlA78=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=P/NLBLn1QBccO0iLmwEVdjTRTOu/1JTVdr0CvbgYz4ThLcAoENpkQwi1mRk7/P19V Brn+rbVYSD8LBBQWtetps+o6x9tV427CYirqerxd+gmGggehAz5OXTZeiD3MkT7U29 s/as2HenQlPGtPPTTf3fp/G4jLA+MmtrrPcey6hAK36CzGgOAg/0LtwnODYIfT0DI9 MUeph4dw/P2V8jMyhN9SftHlhcEV/JNhGKIKb6cMv7netYSdbt356AlVVkhPoiPUvd r4aExWVaj3CL3McIngU/VdH3ENcuJwfiC6rBQVcgRCzZo3MtbE8U1j5N/4s5pn2pxp sfCWQJUUPJk8Q== Date: Mon, 13 Feb 2023 09:54:17 +0200 From: Mike Rapoport To: Guenter Roeck 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> <15a2c023-fdfa-9543-ac36-a846e5f8a000@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <15a2c023-fdfa-9543-ac36-a846e5f8a000@roeck-us.net> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, x86@kernel.org, linux-mips@vger.kernel.org, Max Filippov , Guo Ren , sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, WANG Xuerui , Greg Ungerer , linux-arch@vger.kernel.org, Yoshinori Sato , Helge Deller , Huacai Chen , Russell King , linux-csky@vger.kernel.org, Geert Uytterhoeven , Vineet Gupta , Matt Turner , linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, Arnd Bergmann , linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, openrisc@lists.librecores.org, loongarch@lists.linux.dev, Stafford Horne , linux-arm-kernel@lists.infradead.org, Brian Cain , Mic hal Simek , Thomas Bogendoerfer , linux-parisc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Dinh Nguyen , linux-riscv@lists.infradead.org, Palmer Dabbelt , Richard Weinberger , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , Huacai Chen Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Andrew, On Sun, Feb 12, 2023 at 10:37:15PM -0800, Guenter Roeck wrote: > On 2/12/23 17:26, Mike Rapoport wrote: > > 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); > > Confirmed, this fixes the problem for me. What is your preference for this and m68k fix? Fixups on top of mm-stable or v3 of the entire series? > Thanks, > Guenter -- Sincerely yours, Mike.