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 D8FF1C0219D for ; Sat, 8 Feb 2025 07:23:09 +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=cLA84M3HtDS7eWT5Z4laZq5Hm3Rn0HVUfgr79LFHFMY=; b=kRcnftwn/aHEpJ XSNy3hUz8Atlqw0oe4R0TqgWBz+bpnYVqg+W5Hu0DYAU9fCVI830r4kZRMgfRGXC1hTwVIucIKS00 G65g36xNjsbuM2dII6kThXHddylqXZwPyFHk0R38xIhO6UmhlLMuMuYRN94V0GBkdfuTnvcv6106G ZBkdiSgLjVCcQ9OWvkZ0HqlaBjuyaONMyMtjUIewoLwlw49C3rSLwdJX509+MCvx326viagRL2pLr NflbjPTnzbx8/0L3L5xeXH/y0kcUDfjYe8MJ2Jv+S27Gc2r0IK3+2vJ7/avx5uF/0io79cFWCDJKB WIODZeJ5X8DJI2mg2okg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tgfB5-0000000COkj-0ijC; Sat, 08 Feb 2025 07:22:59 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tgfB4-0000000COkQ-06Zv; Sat, 08 Feb 2025 07:22:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=dIUTnKlqptBhVh4FHbYoQplL5I5DQEoGc3UGevcbKYc=; b=Aq7ElquEb4PU458vaoh2BURefq 0XGupeL+Ea5a1zbTs9mHs4isuqu4YDjsFkA4psNsUKV2IVtFGihdFzB3J4BlS1lx6yz2RbyKBPzLQ q5ug1G3UoBjgjdjZJ8pDtcbs+0u9J4m2W1Iyo6sUbB6qG+Wy0ywQUlWoMnSn8OmDM2h3cb8/NuufT bw6tV0V3F/oz2+8ixkTFko2xzqDuL2B9JR1G1aO/JW0eMEN6zXuMA2HAuspE0AAPA0iEyLWFwxwXY h9ZeDE/095r6pBz9fJ78gD+4ccGeRpRxZN3tn2b/eY9RppD2xLfz/F6OIiBJtZ6ZGQIYD7hJA/Ade hnrUUgrg==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tgfAx-00000009uJj-3bg7; Sat, 08 Feb 2025 07:22:51 +0000 Date: Sat, 8 Feb 2025 07:22:51 +0000 From: Matthew Wilcox To: Peter Zijlstra Cc: Qi Zheng , kevin.brodsky@arm.com, riel@surriel.com, vishal.moola@gmail.com, david@redhat.com, jannh@google.com, hughd@google.com, yuzhao@google.com, muchun.song@linux.dev, akpm@linux-foundation.org, will@kernel.org, aneesh.kumar@kernel.org, npiggin@gmail.com, arnd@arndb.de, dave.hansen@linux.intel.com, rppt@kernel.org, alexghiti@rivosinc.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, x86@kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH 0/5] remove tlb_remove_page_ptdesc() Message-ID: References: <20250124114759.GB15996@noisy.programming.kicks-ass.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20250124114759.GB15996@noisy.programming.kicks-ass.net> 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; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, Jan 24, 2025 at 12:47:59PM +0100, Peter Zijlstra wrote: > Right, so I don't think Sparc and Power care to use ptdesc, they're > using non page page-tables. i think you mean s390, not sparc. all architectures _use_ ptdescs, it's just that s390 and ppc use fractional ptdescs rather than an entire ptdesc for an individual page table. eventually we can change that, but we're looking out perhaps five years before we can allocate a ptdesc for a sub-PAGE_SIZE quantity. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv