From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 D1FC5405F7; Thu, 10 Oct 2024 05:47:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728539265; cv=none; b=cv/oGvcrxMWln7mGF8UalM8qPtwK3dNjVe+BaNdW+oBG3OEOCun6HieFydJqRfRQHR3nFHZr5N8WSeTeOXq9/TuRQ8kPr2DcYodCVcbXmDo5MQoamxdrlmZZVx4BWrueHRNDc8CTw7G5IHSg69PHJtIWzElXS7WayY03DKlkPjs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728539265; c=relaxed/simple; bh=OTuy4VqE5rZSLBEA0/Pnb2zLZJiAXIMvgimloV5JAr4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=R4lGI7A3Fh4yMonxTaOkY1I+UG0qK0Inn/WfbbKuXJxfgokCN0fXsi6eRtVgTzuDJFKdl/TTg4q6COKtaRRCBAaICOZeZoimi1OFGtXCtcWJnp47vTYpIjGAscCBRaC5p/S65QXM+gwT+2lyRpwZN0WT68t3V5/euD5T7Fy25vY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e1wK0sqC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e1wK0sqC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 941A0C4CECC; Thu, 10 Oct 2024 05:47:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728539264; bh=OTuy4VqE5rZSLBEA0/Pnb2zLZJiAXIMvgimloV5JAr4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=e1wK0sqCj1hFSMccCG8VnSk9aTxpzFJTrYzsRT9VXVEEoRS3hraEZu619qHthJzSx DynBiJLcPJQRbA9J0lLh6ATNk3FB4/xFOM4dXnLEGXWPkSrxd0XcoTxriiWODdioLD 1sWIJTn6uT4ZOaW12OrRLOdpildKc5e58UW0/bc2P0yDusD5bq7Iwbf8r4b7hIX5Iy XccbgL+BkzqR13hBcI+eIsGnGBFTEruC5c+E0zapz7RRHpVu6gMKoZHI6cwfi2IRZM bP+nlVliXD/Sq3TcOU7AO/E8ZEwKb501SlYT1dTNQaVEK/mrQ9FtlySueDuymdFkFN xybmhUi0XMlmg== Date: Thu, 10 Oct 2024 08:43:56 +0300 From: Mike Rapoport To: Song Liu Cc: Andrew Morton , Andreas Larsson , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Brian Cain , Catalin Marinas , Christoph Hellwig , Christophe Leroy , Dave Hansen , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Kent Overstreet , "Liam R. Howlett" , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Stafford Horne , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, 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-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v5 4/8] module: prepare to handle ROX allocations for text Message-ID: References: <20241009180816.83591-1-rppt@kernel.org> <20241009180816.83591-5-rppt@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Wed, Oct 09, 2024 at 03:23:40PM -0700, Song Liu wrote: > On Wed, Oct 9, 2024 at 11:10 AM Mike Rapoport wrote: > [...] > > diff --git a/include/linux/module.h b/include/linux/module.h > > index 88ecc5e9f523..7039f609c6ef 100644 > > --- a/include/linux/module.h > > +++ b/include/linux/module.h > > @@ -367,6 +367,8 @@ enum mod_mem_type { > > > > struct module_memory { > > void *base; > > + void *rw_copy; > > + bool is_rox; > > unsigned int size; > > Do we really need to hold the rw_copy all the time? We hold it only during module initialization, it's freed in post_relocation. > Thanks, > Song > > [...] -- Sincerely yours, Mike. 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 76335CF07A8 for ; Thu, 10 Oct 2024 05:47:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h2o08AmX4W2+tGIhgtYqAvpBrOhpzXo9Js6BuWQKBy4=; b=h7qUBusVgCvdSQ qlvXBqkSbChPntR1L07n/EooumbOPz/tSanq3AEJUDu097Ghc/jUxGqp718RT//l40+wcMAX/+Ha7 +MokkSKzRoFT7K7/HflHFPzYYD5Z4w45JbzyFtB0W4FqRTM3E937SMRTwW4ArbRAibm04fQTJKnID YAwS+d5NhMchJPLiwUv4V1w8shhkg8W0fLi/QdnMLBhpjELNepJOMh2R6BXrnPOpJ7aF641Q+V+by HELvr0dSzRGQMBFaX/AtazxIzqZ+cbabAyk6BHgQ4WrQM02dapvKUVOGp7q/hPW1YOEU9HMsJxBS5 3lMkpcJMmCWRDBDl2rbA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sym1c-0000000BbVW-117p; Thu, 10 Oct 2024 05:47:48 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sym1Z-0000000BbTl-3PkR; Thu, 10 Oct 2024 05:47:47 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 729BE5C5406; Thu, 10 Oct 2024 05:47:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 941A0C4CECC; Thu, 10 Oct 2024 05:47:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728539264; bh=OTuy4VqE5rZSLBEA0/Pnb2zLZJiAXIMvgimloV5JAr4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=e1wK0sqCj1hFSMccCG8VnSk9aTxpzFJTrYzsRT9VXVEEoRS3hraEZu619qHthJzSx DynBiJLcPJQRbA9J0lLh6ATNk3FB4/xFOM4dXnLEGXWPkSrxd0XcoTxriiWODdioLD 1sWIJTn6uT4ZOaW12OrRLOdpildKc5e58UW0/bc2P0yDusD5bq7Iwbf8r4b7hIX5Iy XccbgL+BkzqR13hBcI+eIsGnGBFTEruC5c+E0zapz7RRHpVu6gMKoZHI6cwfi2IRZM bP+nlVliXD/Sq3TcOU7AO/E8ZEwKb501SlYT1dTNQaVEK/mrQ9FtlySueDuymdFkFN xybmhUi0XMlmg== Date: Thu, 10 Oct 2024 08:43:56 +0300 From: Mike Rapoport To: Song Liu Cc: Andrew Morton , Andreas Larsson , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Brian Cain , Catalin Marinas , Christoph Hellwig , Christophe Leroy , Dave Hansen , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Kent Overstreet , "Liam R. Howlett" , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Stafford Horne , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, 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-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v5 4/8] module: prepare to handle ROX allocations for text Message-ID: References: <20241009180816.83591-1-rppt@kernel.org> <20241009180816.83591-5-rppt@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241009_224745_946664_0DF79C5B X-CRM114-Status: GOOD ( 14.32 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; 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Thu, 10 Oct 2024 05:47:49 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sym1Z-0000000BbTl-3PkR; Thu, 10 Oct 2024 05:47:47 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 729BE5C5406; Thu, 10 Oct 2024 05:47:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 941A0C4CECC; Thu, 10 Oct 2024 05:47:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728539264; bh=OTuy4VqE5rZSLBEA0/Pnb2zLZJiAXIMvgimloV5JAr4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=e1wK0sqCj1hFSMccCG8VnSk9aTxpzFJTrYzsRT9VXVEEoRS3hraEZu619qHthJzSx DynBiJLcPJQRbA9J0lLh6ATNk3FB4/xFOM4dXnLEGXWPkSrxd0XcoTxriiWODdioLD 1sWIJTn6uT4ZOaW12OrRLOdpildKc5e58UW0/bc2P0yDusD5bq7Iwbf8r4b7hIX5Iy XccbgL+BkzqR13hBcI+eIsGnGBFTEruC5c+E0zapz7RRHpVu6gMKoZHI6cwfi2IRZM bP+nlVliXD/Sq3TcOU7AO/E8ZEwKb501SlYT1dTNQaVEK/mrQ9FtlySueDuymdFkFN xybmhUi0XMlmg== Date: Thu, 10 Oct 2024 08:43:56 +0300 From: Mike Rapoport To: Song Liu Cc: Andrew Morton , Andreas Larsson , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Brian Cain , Catalin Marinas , Christoph Hellwig , Christophe Leroy , Dave Hansen , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Kent Overstreet , "Liam R. Howlett" , Luis Chamberlain , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Stafford Horne , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, 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-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v5 4/8] module: prepare to handle ROX allocations for text Message-ID: References: <20241009180816.83591-1-rppt@kernel.org> <20241009180816.83591-5-rppt@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241009_224745_946664_0DF79C5B X-CRM114-Status: GOOD ( 14.32 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org T24gV2VkLCBPY3QgMDksIDIwMjQgYXQgMDM6MjM6NDBQTSAtMDcwMCwgU29uZyBMaXUgd3JvdGU6 Cj4gT24gV2VkLCBPY3QgOSwgMjAyNCBhdCAxMToxMOKAr0FNIE1pa2UgUmFwb3BvcnQgPHJwcHRA a2VybmVsLm9yZz4gd3JvdGU6Cj4gWy4uLl0KPiA+IGRpZmYgLS1naXQgYS9pbmNsdWRlL2xpbnV4 L21vZHVsZS5oIGIvaW5jbHVkZS9saW51eC9tb2R1bGUuaAo+ID4gaW5kZXggODhlY2M1ZTlmNTIz Li43MDM5ZjYwOWM2ZWYgMTAwNjQ0Cj4gPiAtLS0gYS9pbmNsdWRlL2xpbnV4L21vZHVsZS5oCj4g PiArKysgYi9pbmNsdWRlL2xpbnV4L21vZHVsZS5oCj4gPiBAQCAtMzY3LDYgKzM2Nyw4IEBAIGVu dW0gbW9kX21lbV90eXBlIHsKPiA+Cj4gPiAgc3RydWN0IG1vZHVsZV9tZW1vcnkgewo+ID4gICAg ICAgICB2b2lkICpiYXNlOwo+ID4gKyAgICAgICB2b2lkICpyd19jb3B5Owo+ID4gKyAgICAgICBi b29sIGlzX3JveDsKPiA+ICAgICAgICAgdW5zaWduZWQgaW50IHNpemU7Cj4gCj4gRG8gd2UgcmVh bGx5IG5lZWQgdG8gaG9sZCB0aGUgcndfY29weSBhbGwgdGhlIHRpbWU/IAoKV2UgaG9sZCBpdCBv bmx5IGR1cmluZyBtb2R1bGUgaW5pdGlhbGl6YXRpb24sIGl0J3MgZnJlZWQgaW4KcG9zdF9yZWxv Y2F0aW9uLgoKPiBUaGFua3MsCj4gU29uZwo+IAo+IFsuLi5dCgotLSAKU2luY2VyZWx5IHlvdXJz LApNaWtlLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K bGludXgtc25wcy1hcmMgbWFpbGluZyBsaXN0CmxpbnV4LXNucHMtYXJjQGxpc3RzLmluZnJhZGVh ZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1z bnBzLWFyYwo=