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 X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03D93C433DB for ; Sun, 24 Jan 2021 05:02:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBD8122C9F for ; Sun, 24 Jan 2021 05:02:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726102AbhAXFC6 (ORCPT ); Sun, 24 Jan 2021 00:02:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:47498 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726192AbhAXFCt (ORCPT ); Sun, 24 Jan 2021 00:02:49 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id CE88422D3E; Sun, 24 Jan 2021 05:02:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1611464529; bh=5m6eKIrU3O/9S7JR8opysQYB7ve/fwDQzJXKsoXT4q4=; h=Date:From:To:Subject:In-Reply-To:From; b=IL5yFNEBgszUsIogAzsPzynt7ECC1kgFa5KcHXYVSHG5hhphlQoYblsx32WoNzTRd e5W2ry7E9W96q0LyZ2ctT1koCa3FA5mKinVNmFNK9WgCMUJ4H4JpwUvzNdJ+HdTGr4 Pvdez8QPkYLOZdf9dxonNtRePqnftiWyowbfMUvA= Date: Sat, 23 Jan 2021 21:02:07 -0800 From: Andrew Morton To: akpm@linux-foundation.org, andreas@gaisler.com, davem@davemloft.net, linux-mm@kvack.org, mm-commits@vger.kernel.org, mpe@ellerman.id.au, paul@crapouillou.net, peterz@infradead.org, tglx@linutronix.de, torvalds@linux-foundation.org, tsbogend@alpha.franken.de Subject: [patch 16/19] mips/mm/highmem: use set_pte() for kmap_local() Message-ID: <20210124050207.kzNYUeyrW%akpm@linux-foundation.org> In-Reply-To: <20210123210029.a7c704d0cab204683e41ad10@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Thomas Gleixner Subject: mips/mm/highmem: use set_pte() for kmap_local() set_pte_at() on MIPS invokes update_cache() which might recurse into kmap_local(). Use set_pte() like the original MIPS highmem implementation did. Link: https://lkml.kernel.org/r/20210112170411.187513575@linutronix.de Fixes: a4c33e83bca1 ("mips/mm/highmem: Switch to generic kmap atomic") Signed-off-by: Thomas Gleixner Reported-by: Paul Cercueil Reported-by: Thomas Bogendoerfer Acked-by: Thomas Bogendoerfer Cc: Andreas Larsson Cc: "David S. Miller" Cc: Michael Ellerman Cc: Peter Zijlstra Signed-off-by: Andrew Morton --- arch/mips/include/asm/highmem.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/include/asm/highmem.h~mips-mm-highmem-use-set_pte-for-kmap_local +++ a/arch/mips/include/asm/highmem.h @@ -51,6 +51,7 @@ extern void kmap_flush_tlb(unsigned long #define flush_cache_kmaps() BUG_ON(cpu_has_dc_aliases) +#define arch_kmap_local_set_pte(mm, vaddr, ptep, ptev) set_pte(ptep, ptev) #define arch_kmap_local_post_map(vaddr, pteval) local_flush_tlb_one(vaddr) #define arch_kmap_local_post_unmap(vaddr) local_flush_tlb_one(vaddr) _