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=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 195ADC433E2 for ; Sun, 13 Sep 2020 11:46:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C95762158C for ; Sun, 13 Sep 2020 11:46:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="PvtMakq3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725936AbgIMLqD (ORCPT ); Sun, 13 Sep 2020 07:46:03 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:42720 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725944AbgIMLpj (ORCPT ); Sun, 13 Sep 2020 07:45:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599997480; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=W9BE3+QupnrIGk+K+XKNwB1A5ivau0ppvVu7A4eBwWQ=; b=PvtMakq3tRTcD4e5X2OqzhX/TXPUbgPDDNJlq3i0CxgoKgY1atTVvPE87Sh/yJ7WToPo9A 0r+YrVSFNgOZvHrampuH+8Yv+lkwXUw56U9eqXWL7k/HK6xTNNbL2ROAX1uS3zFHiVPIa+ kWRMtb9aG+MOoDQi/lNb3NO8P8KAlYs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-37-OWN78MUaOfiAbs3pEXztRw-1; Sun, 13 Sep 2020 07:44:38 -0400 X-MC-Unique: OWN78MUaOfiAbs3pEXztRw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9E925425CB; Sun, 13 Sep 2020 11:44:36 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-46.bne.redhat.com [10.64.54.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 291FB75121; Sun, 13 Sep 2020 11:44:33 +0000 (UTC) From: Gavin Shan To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, catalin.marinas@arm.com, anshuman.khandual@arm.com, mark.rutland@arm.com, will@kernel.org, shan.gavin@gmail.com Subject: [PATCH] arm64/mm: Refactor {pgd, pud, pmd, pte}_ERROR() Date: Sun, 13 Sep 2020 21:44:30 +1000 Message-Id: <20200913114430.16102-1-gshan@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The function __{pgd, pud, pmd, pte}_error() are introduced so that they can be called by {pgd, pud, pmd, pte}_ERROR(). However, some of the functions could never be called when the corresponding page table level isn't enabled. For example, __{pud, pmd}_error() are unused when PUD and PMD are folded to PGD. This removes __{pgd, pud, pmd, pte}_error() and call pr_err() from {pgd, pud, pmd, pte}_ERROR() directly, similar to what x86/powerpc are doing. With this, the code looks a bit simplified either. Signed-off-by: Gavin Shan --- arch/arm64/include/asm/pgtable.h | 17 ++++++++--------- arch/arm64/kernel/traps.c | 20 -------------------- 2 files changed, 8 insertions(+), 29 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index d5d3fbe73953..8d037615a392 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -35,11 +35,6 @@ extern struct page *vmemmap; -extern void __pte_error(const char *file, int line, unsigned long val); -extern void __pmd_error(const char *file, int line, unsigned long val); -extern void __pud_error(const char *file, int line, unsigned long val); -extern void __pgd_error(const char *file, int line, unsigned long val); - #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE @@ -57,7 +52,8 @@ extern void __pgd_error(const char *file, int line, unsigned long val); extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; #define ZERO_PAGE(vaddr) phys_to_page(__pa_symbol(empty_zero_page)) -#define pte_ERROR(pte) __pte_error(__FILE__, __LINE__, pte_val(pte)) +#define pte_ERROR(e) \ + pr_err("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) /* * Macros to convert between a physical address and its placement in a @@ -541,7 +537,8 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) #if CONFIG_PGTABLE_LEVELS > 2 -#define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd_val(pmd)) +#define pmd_ERROR(e) \ + pr_err("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e)) #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!(pud_val(pud) & PUD_TABLE_BIT)) @@ -608,7 +605,8 @@ static inline unsigned long pud_page_vaddr(pud_t pud) #if CONFIG_PGTABLE_LEVELS > 3 -#define pud_ERROR(pud) __pud_error(__FILE__, __LINE__, pud_val(pud)) +#define pud_ERROR(e) \ + pr_err("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__, pud_val(e)) #define p4d_none(p4d) (!p4d_val(p4d)) #define p4d_bad(p4d) (!(p4d_val(p4d) & 2)) @@ -667,7 +665,8 @@ static inline unsigned long p4d_page_vaddr(p4d_t p4d) #endif /* CONFIG_PGTABLE_LEVELS > 3 */ -#define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd)) +#define pgd_ERROR(e) \ + pr_err("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e)) #define pgd_set_fixmap(addr) ((pgd_t *)set_fixmap_offset(FIX_PGD, addr)) #define pgd_clear_fixmap() clear_fixmap(FIX_PGD) diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 13ebd5ca2070..12fba7136dbd 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -935,26 +935,6 @@ asmlinkage void enter_from_user_mode(void) } NOKPROBE_SYMBOL(enter_from_user_mode); -void __pte_error(const char *file, int line, unsigned long val) -{ - pr_err("%s:%d: bad pte %016lx.\n", file, line, val); -} - -void __pmd_error(const char *file, int line, unsigned long val) -{ - pr_err("%s:%d: bad pmd %016lx.\n", file, line, val); -} - -void __pud_error(const char *file, int line, unsigned long val) -{ - pr_err("%s:%d: bad pud %016lx.\n", file, line, val); -} - -void __pgd_error(const char *file, int line, unsigned long val) -{ - pr_err("%s:%d: bad pgd %016lx.\n", file, line, val); -} - /* GENERIC_BUG traps */ int is_valid_bugaddr(unsigned long addr) -- 2.23.0