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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 87770C433E5 for ; Fri, 15 May 2020 14:37:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5FC0420825 for ; Fri, 15 May 2020 14:37:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="uAJfNv2T" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727964AbgEOOh6 (ORCPT ); Fri, 15 May 2020 10:37:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727943AbgEOOh5 (ORCPT ); Fri, 15 May 2020 10:37:57 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C04CC061A0C; Fri, 15 May 2020 07:37:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=HDHNR2vMO5LCySRH/6CT3QqjRsqvFZVzPMz3Qt7mA6o=; b=uAJfNv2TDWJ9JRrcHAJUafDd9C KT8Rx9Bi4XWFozwmwOOqZsw3N64RQD9ErU02DTmQP9wUNQOf0ctXrgMstAhzy0XcLClxnojVhMHSL o72cLiKWcbAIxAAtk5tDJ2JYF1SW/wJ3VMFyTu5yg8VxbDKil5E1qyNe7QfJqzY6uJ5PuwL7F7x5x h0OKHzVB/oQMCDqHug9II4XGGw5HWXk4POJ5jWRB8Q+9GgljbxEiBFOxvUQ8fBl1TxTd3GPm8pcbk CRNY1ZY6VC2rGV672WS/7S3Fxet+aDqDNd+FrRNCSE5AhEyFilH0csXCrw8hA1FZtyztlIyN9YIAY aP4syW4g==; Received: from [2001:4bb8:188:1506:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZbT0-0004m1-QX; Fri, 15 May 2020 14:37:39 +0000 From: Christoph Hellwig To: Andrew Morton , Arnd Bergmann , Roman Zippel Cc: Jessica Yu , Michal Simek , x86@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, linux-fsdevel@vger.kernel.org, Palmer Dabbelt Subject: [PATCH 17/29] riscv: use asm-generic/cacheflush.h Date: Fri, 15 May 2020 16:36:34 +0200 Message-Id: <20200515143646.3857579-18-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200515143646.3857579-1-hch@lst.de> References: <20200515143646.3857579-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org RISC-V needs almost no cache flushing routines of its own. Rely on asm-generic/cacheflush.h for the defaults. Also remove the pointless __KERNEL__ ifdef while we're at it. Signed-off-by: Christoph Hellwig Reviewed-by: Palmer Dabbelt Acked-by: Palmer Dabbelt --- arch/riscv/include/asm/cacheflush.h | 62 ++--------------------------- 1 file changed, 3 insertions(+), 59 deletions(-) diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h index c8677c75f82cb..a167b4fbdf007 100644 --- a/arch/riscv/include/asm/cacheflush.h +++ b/arch/riscv/include/asm/cacheflush.h @@ -8,65 +8,6 @@ #include -#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 - -/* - * The cache doesn't need to be flushed when TLB entries change when - * the cache is mapped to physical memory, not virtual memory - */ -static inline void flush_cache_all(void) -{ -} - -static inline void flush_cache_mm(struct mm_struct *mm) -{ -} - -static inline void flush_cache_dup_mm(struct mm_struct *mm) -{ -} - -static inline void flush_cache_range(struct vm_area_struct *vma, - unsigned long start, - unsigned long end) -{ -} - -static inline void flush_cache_page(struct vm_area_struct *vma, - unsigned long vmaddr, - unsigned long pfn) -{ -} - -static inline void flush_dcache_mmap_lock(struct address_space *mapping) -{ -} - -static inline void flush_dcache_mmap_unlock(struct address_space *mapping) -{ -} - -static inline void flush_icache_page(struct vm_area_struct *vma, - struct page *page) -{ -} - -static inline void flush_cache_vmap(unsigned long start, unsigned long end) -{ -} - -static inline void flush_cache_vunmap(unsigned long start, unsigned long end) -{ -} - -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ - do { \ - memcpy(dst, src, len); \ - flush_icache_user_range(vma, page, vaddr, len); \ - } while (0) -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - memcpy(dst, src, len) - static inline void local_flush_icache_all(void) { asm volatile ("fence.i" ::: "memory"); @@ -79,6 +20,7 @@ static inline void flush_dcache_page(struct page *page) if (test_bit(PG_dcache_clean, &page->flags)) clear_bit(PG_dcache_clean, &page->flags); } +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 /* * RISC-V doesn't have an instruction to flush parts of the instruction cache, @@ -105,4 +47,6 @@ void flush_icache_mm(struct mm_struct *mm, bool local); #define SYS_RISCV_FLUSH_ICACHE_LOCAL 1UL #define SYS_RISCV_FLUSH_ICACHE_ALL (SYS_RISCV_FLUSH_ICACHE_LOCAL) +#include + #endif /* _ASM_RISCV_CACHEFLUSH_H */ -- 2.26.2