From mboxrd@z Thu Jan 1 00:00:00 1970 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.subspace.kernel.org (Postfix) with ESMTPS id C400E18C03D; Thu, 10 Oct 2024 06:58:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728543529; cv=none; b=ZauAZH052+2SqOn/la25W+B7STVCQfUw0AKFV7LYX5Mx1dqCkyoWF0RRetNBJL/lpFYzCSjccD8htekOeqJph5xq+Zhkbg24xZ2HRCcXywqKAVehzs3r7EPREwXWKcsdqLG/wzBT1fNYZtr9+AIPuLdb6oKb1pJxt0DO3eAx36E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728543529; c=relaxed/simple; bh=caS8dejioNQ8618OBctl8+vfCDRZ5qvkd9Pb2QUU3UQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=WQ8OaElbafoDoX1MyInZ7MSbp3GegmZiUIemQZy8XH72rl2QZM5wy6SljryJKi92LMfb+qkinGZvAPooy8MzV3odBSinWtm2g352BdAPIt1FOEdGVkwngKpzLimf1+DJ0OzU5yocN6wphllEjwsEstT4q+dynndenuDOz4pjQeo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=PB60Rs8V; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="PB60Rs8V" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=/zbTLmbbuRlkbkFfWpl8colo1jSJ9uliQf2rR8cRNA4=; b=PB60Rs8VG5047EKu2IWcGim4xN 3i0Qw7RPRAIsO66mh9xdAfrSun/MIch91MkwMfhqOKDb/wKvMQW97oFm92kvVqhUytRW4JhxHN5jH hmtDCrppcP6A5fT/VMKL2AwR/GEGHHTNyfGcu6VpMaWhVFgYathFFZvP2aBhwpbe9mt1F27jNJHAe DM0dvoT7U+kwu/MXVo2HF92AZLf51MJWArXM4URUWYfk4GTWuKsXLZ3eVcaFjhOQ+bJZmsEgB7Afw RsxTevrbhGUTDv6C9ObIW+MRmnJJoHX+q3zSnaEBWcNH/CJhNwv/13LMWnt8QDpqRzQrwpLLFX/ky bpMsfU6Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1syn85-0000000BlEq-1dyW; Thu, 10 Oct 2024 06:58:33 +0000 Date: Wed, 9 Oct 2024 23:58:33 -0700 From: Christoph Hellwig To: Mike Rapoport 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 , Song Liu , 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 7/8] execmem: add support for cache of large ROX pages Message-ID: References: <20241009180816.83591-1-rppt@kernel.org> <20241009180816.83591-8-rppt@kernel.org> Precedence: bulk X-Mailing-List: linux-m68k@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241009180816.83591-8-rppt@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Wed, Oct 09, 2024 at 09:08:15PM +0300, Mike Rapoport wrote: > /** > * struct execmem_info - architecture parameters for code allocations > + * @fill_trapping_insns: set memory to contain instructions that will trap > * @ranges: array of parameter sets defining architecture specific > * parameters for executable memory allocations. The ranges that are not > * explicitly initialized by an architecture use parameters defined for > * @EXECMEM_DEFAULT. > */ > struct execmem_info { > + void (*fill_trapping_insns)(void *ptr, size_t size, bool writable); > struct execmem_range ranges[EXECMEM_TYPE_MAX]; Why is the filler an indirect function call and not an architecture hook?