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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D58A5D6406D for ; Wed, 17 Dec 2025 04:14:09 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 257C46B0005; Tue, 16 Dec 2025 23:14:09 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2057C6B0089; Tue, 16 Dec 2025 23:14:09 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0E76D6B008A; Tue, 16 Dec 2025 23:14:09 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id ED5806B0005 for ; Tue, 16 Dec 2025 23:14:08 -0500 (EST) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 425485B704 for ; Wed, 17 Dec 2025 04:14:08 +0000 (UTC) X-FDA: 84227645376.01.E0D3C42 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf19.hostedemail.com (Postfix) with ESMTP id 7B2F61A000C for ; Wed, 17 Dec 2025 04:14:06 +0000 (UTC) Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=mObMGKaH; dmarc=none; spf=pass (imf19.hostedemail.com: domain of akpm@linux-foundation.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1765944846; a=rsa-sha256; cv=none; b=7Uoy6HlTiT7iUBgXXnNhegUQaScwL1T/JWKVEO8lwbkEDyEG29Uwj8uumrGjABX0HSFBCa KbEi9NUP787W+Lb/wKFPUB7mKQfGHcHucYE6o906JX4zGuciHGt1lvNqZKBrZq6SNLNeiK wX8YM+7Be0rhD8Ln7nZhJElBPcxnfqM= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=mObMGKaH; dmarc=none; spf=pass (imf19.hostedemail.com: domain of akpm@linux-foundation.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1765944846; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=tIvslDrd3vRyKntdo1TKclAc08m0jxGuja83vYWFMz0=; b=bI5EnkdqYFdujvdlZTH7XVN6J8BMg5hd52uSVbKdwEuexXhXEpQEKjGX3U2Pb44QTB+feD kLQvhc776/qin+2uhMWEYwe/V+T6ujLZUxLQcWhF7RU7XkegARM0jro+AO0grfX7D2hNiW y6jmJ1oteTUaB6Dp3igfNuEld5Kmu7A= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 07C734021D; Wed, 17 Dec 2025 04:14:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB41EC4CEFB; Wed, 17 Dec 2025 04:14:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1765944844; bh=xU2trvapXnk7g5CtACkCj5ikoDQ/txcQUif1mO1cIY8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=mObMGKaHzs+oIi98uFJNPKFjcIbwG14MyPdinNriP9aRfBOmrP9YgUR0U5RY50Jcg MRZ/eN62bquBtMDDTcWo7ge5Ui+mwLmddzDbSz+GfDkXxY71DhMOB9iezvOgCfm+sh F57lldv0D0XP5sN73LEmpLArzoS8Y23dHH7bFz7M= Date: Tue, 16 Dec 2025 20:14:03 -0800 From: Andrew Morton To: Kevin Brodsky Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Alexander Gordeev , Andreas Larsson , Anshuman Khandual , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , "Ritesh Harjani (IBM)" , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Venkat Rao Bagalkote , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Subject: Re: [PATCH v6 14/14] mm: Add basic tests for lazy_mmu Message-Id: <20251216201403.4647a4f9861d3122ee9e90d7@linux-foundation.org> In-Reply-To: <20251215150323.2218608-15-kevin.brodsky@arm.com> References: <20251215150323.2218608-1-kevin.brodsky@arm.com> <20251215150323.2218608-15-kevin.brodsky@arm.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 7B2F61A000C X-Stat-Signature: qpcr8pzqxdwg7w7ghrceefpozhfpgif6 X-Rspam-User: X-HE-Tag: 1765944846-955370 X-HE-Meta: U2FsdGVkX189uHp4Y06fV4hBsWm7xbTnEly1/8LsTCM2yG0rOjeqdTEQThjl6EBzpI9M9Njrt/RUTka/txDnyeQ4Ndjzw8JbHZ5HVggw8o3I/g52m2jn5LgsIuj8ohCSZLqq0KQZibbPeagswjE/mryzyF20YJFcSNL66IYdQb6M5NK+kNqWOLayLViIIaNcSMtLi6AuFjxr5gcNAAvP0E++zSceXXoZQVPVNHvU9I6IRp0dK5JckqN2v+UDeeomEwF+Ez/LNHU3ke/KUKaA2gcKasJg+pMyqvmgQFb5HEV3q5IO4u94Eord+TsxRuBtgeZkdKc6p/nnwSDv4ngot1Q154ZvmZx/zFMVZpGxe5juj9gzwQvzMcgA5u+X+61TINuZIk6IsU0i0azkl9+PCLvW5SLkdFu7rjL3l264IZZlYkd3jIZkowc275b4dxJxH5XKGetmXZzOSOI6zFhSFW/mOoVZdM0ZEFh/emO+puJYdCWLv4bWdHafyZ8wCnAfnL+ow7jAg6TUmgTKAxX1Au0LyCwooV94lFbJA0oE3IEIQqkUszzeDv9EYOT/C4kT7J46ieEVX/Ht+ZdNQZDVchgWs50h9Kj0GX2SJYaPuhpvKKeYM5eyvMT8OtxWNWy1ybDWbqJIWuHS2LvCXpzdCWSMcO8W9WhdIjiOE5L+T1YNn9WIj4kDnk9GPRV166lochkAIjyi/QGdyqmCNX8a5FbMqtoBtVNNfwZ5QozvqgGg9c2/+/oni/CJiR/9oxcD8ifhPdJbFPG4XZkyIgm1Syn/jCmYQ0FM05AM3urpshoan8UN1FMWtL67AeMcnBFgwdmA0ZyX6/zApD3Ob42SnrD/s/T2rz4gtrcO5ZwR5WVfA8YghWshltk3q5dFIMm4gR08d9jzAo8eQJ6qoICvJ5JJ/m1CLyhdJ5as6SxDnGpZ4BcfsJtveKxiZihSMun0gcOX8fxUA2CXEWqsr8C 1/RWPrqL DpkGvW8ZTLLEE/MH8nL7RGltha9mWx8KV2GTOHaKY2RO17S6Mq9KTRr6GCLFDtkinDku29PK6oWfjfQdjiaqRqBK/CPi5vSs/qs9fePX3Q8CKAbil0fWVp2UpINMXnGuSGWncpicVyrCVEFW2uB9MDN9YIpwYbFVlK9IG9ESbvaPc/5hUiCWLQrn1Xmh6H62JttDG8CTkRvwRRFKKR90+xiMQVA17eC52tGDCoqKFELDPxyB5YwL0lo48C7vdyJ9jq1UKeRWm01xZ31ThkSI1E9EOH5DxK0FNCObQPAx9vR0pCa0b0mc8wSr8uu4rk/jRSEvRl0i1XahNa8CJwzF+DvpuBQhiLQIk9GJ3ionpOOJUq/bnoS/4BFbcsHp+UDAitRLZwacq4EvjilQz2TRFYs0U2pGUiYoAJKE+UtSTjD4usOQ= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 15 Dec 2025 15:03:23 +0000 Kevin Brodsky wrote: > Add basic KUnit tests for the generic aspects of the lazy MMU mode: > ensure that it appears active when it should, depending on how > enable/disable and pause/resume pairs are nested. I needed this for powerpc allmodconfig; --- a/arch/powerpc/mm/book3s64/hash_tlb.c~mm-add-basic-tests-for-lazy_mmu-fix +++ a/arch/powerpc/mm/book3s64/hash_tlb.c @@ -30,6 +30,7 @@ #include DEFINE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch); +EXPORT_SYMBOL_GPL(ppc64_tlb_batch); /* * A linux PTE was changed and the corresponding hash table entry @@ -154,6 +155,7 @@ void __flush_tlb_pending(struct ppc64_tl flush_hash_range(i, local); batch->index = 0; } +EXPORT_SYMBOL_GPL(__flush_tlb_pending); void hash__tlb_flush(struct mmu_gather *tlb) { _