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_BLOCKED autolearn=unavailable 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 9D084C433DB for ; Tue, 12 Jan 2021 17:05:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5FDBD2311A for ; Tue, 12 Jan 2021 17:05:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392327AbhALRFe (ORCPT ); Tue, 12 Jan 2021 12:05:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392288AbhALRFd (ORCPT ); Tue, 12 Jan 2021 12:05:33 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08F91C06179F; Tue, 12 Jan 2021 09:04:53 -0800 (PST) Message-Id: <20210112170411.187513575@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1610471091; h=from:from: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: references:references; bh=pTk1FcH5+/wyB8HB1QRJBoXsx85zfAu4dJubIkq5SzI=; b=gXKVOF3fh+FZwnz+sbLIbpsIqGtmfmcazChwcDdjZCPkH513hGnuY50e8hxBerCj+Wozq6 WjgYTVQGcNu19gSVoPSMUUdPEFQ6UewzPdWwBUpbQGo2dR9GuoXtYO5tLQghs+5Gjdhfvn apTCXHcWAlg1m4tdfKh2Fgae4QM+vz+2vlBm4AaiqkvBvmXsD/lmVr2DpvbTvOmvz+ugxx o++jLvhtnn57Ujm52fOxGmyjUtgnJ2JI/8kE5srw5yeujHTimsvfFlCi8JDN5enGNJgu8H gUy6dDFWPVPpAWxPgD0mWAXhgQoHM2Kh/3GuZjlZ99rD4A8Fm1EkjhsFkFaArQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1610471091; h=from:from: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: references:references; bh=pTk1FcH5+/wyB8HB1QRJBoXsx85zfAu4dJubIkq5SzI=; b=Q/AYXgDRbN6MB0ck3kKpvdlAZd4tF/RVCxjLqReI6YlcdY4xdER6sSEIJpfVazoon1EasT Z/sRhKeZnnCkqaCg== Date: Tue, 12 Jan 2021 18:01:39 +0100 From: Thomas Gleixner To: LKML Cc: Andrew Morton , linux-mm@kvack.org, Peter Zijlstra , Paul Cercueil , Thomas Bogendoerfer , Andreas Larsson , "David S. Miller" , sparclinux@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org Subject: [patch 3/4] mips/mm/highmem: Use set_pte() for kmap_local() References: <20210112170136.078559026@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org set_pte_at() on MIPS invokes update_cache() which might recurse into kmap_local(). Use set_pte() like the original MIPS highmem implementation did. Fixes: a4c33e83bca1 ("mips/mm/highmem: Switch to generic kmap atomic") Reported-by: Paul Cercueil Reported-by: Thomas Bogendoerfer Signed-off-by: Thomas Gleixner --- arch/mips/include/asm/highmem.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/include/asm/highmem.h +++ b/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)