From patchwork Sun May 10 07:54:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11538937 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B584D186E for ; Sun, 10 May 2020 07:58:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D05B20801 for ; Sun, 10 May 2020 07:58:10 +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="sDtpyjEU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729126AbgEJH4M (ORCPT ); Sun, 10 May 2020 03:56:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729106AbgEJH4I (ORCPT ); Sun, 10 May 2020 03:56:08 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA056C061A0C; Sun, 10 May 2020 00:56:08 -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=tuZN2xrlpt1mzaSPTZQmZcxarUCgYHN/WWoYWZD5CMA=; b=sDtpyjEUq3idoip3kyow2/PSWu uJVQ905vcUrXcgxrIxGDiLMbwWkdmWFL3KbQPd5+UF85+oP4oMmaS3xkzpsUVWiDcixEhOIKo/cl1 Vz3AFViQKVcBMvGEUWzwdyMeL1JUopahMHntY+9iMB0v+wY6a9xjPr6yUq6SzVBFRERWKDF7DIK4u zoOU9tCQc5fmTiPoje0X5bG83/bSW3bju4T9r039OVyhynk/4L3Icfau7cwcNJ7XPebW0TDm7A1OX 1O3JDWHPFgqgs+gHRxXS1Qt6gMyAwHTxZ2HknlcDl7IGeRSp00xiM1nRdlnl7T/U5tvQBRlsfW9wQ oGw6IPLg==; Received: from [2001:4bb8:180:9d3f:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXgoM-0008NU-Lt; Sun, 10 May 2020 07:55:47 +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 Subject: [PATCH 11/31] arm64: use asm-generic/cacheflush.h Date: Sun, 10 May 2020 09:54:50 +0200 Message-Id: <20200510075510.987823-12-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200510075510.987823-1-hch@lst.de> References: <20200510075510.987823-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org ARM64 needs almost no cache flushing routines of its own. Rely on asm-generic/cacheflush.h for the defaults. Signed-off-by: Christoph Hellwig --- arch/arm64/include/asm/cacheflush.h | 46 ++++------------------------- 1 file changed, 5 insertions(+), 41 deletions(-) diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h index e6cca3d4acf70..03a5a187163ab 100644 --- a/arch/arm64/include/asm/cacheflush.h +++ b/arch/arm64/include/asm/cacheflush.h @@ -94,20 +94,7 @@ static inline void flush_icache_range(unsigned long start, unsigned long end) #endif kick_all_cpus_sync(); } - -static inline void flush_cache_mm(struct mm_struct *mm) -{ -} - -static inline void flush_cache_page(struct vm_area_struct *vma, - unsigned long user_addr, unsigned long pfn) -{ -} - -static inline void flush_cache_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ -} +#define flush_icache_range flush_icache_range /* * Cache maintenance functions used by the DMA API. No to be used directly. @@ -123,12 +110,7 @@ extern void __dma_flush_area(const void *, size_t); */ extern void copy_to_user_page(struct vm_area_struct *, struct page *, unsigned long, void *, const void *, unsigned long); -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - do { \ - memcpy(dst, src, len); \ - } while (0) - -#define flush_cache_dup_mm(mm) flush_cache_mm(mm) +#define copy_to_user_page copy_to_user_page /* * flush_dcache_page is used when the kernel has written to the page @@ -154,29 +136,11 @@ static __always_inline void __flush_icache_all(void) dsb(ish); } -#define flush_dcache_mmap_lock(mapping) do { } while (0) -#define flush_dcache_mmap_unlock(mapping) do { } while (0) - -/* - * We don't appear to need to do anything here. In fact, if we did, we'd - * duplicate cache flushing elsewhere performed by flush_dcache_page(). - */ -#define flush_icache_page(vma,page) do { } while (0) - -/* - * Not required on AArch64 (PIPT or VIPT non-aliasing D-cache). - */ -static inline void flush_cache_vmap(unsigned long start, unsigned long end) -{ -} - -static inline void flush_cache_vunmap(unsigned long start, unsigned long end) -{ -} - int set_memory_valid(unsigned long addr, int numpages, int enable); int set_direct_map_invalid_noflush(struct page *page); int set_direct_map_default_noflush(struct page *page); -#endif +#include + +#endif /* __ASM_CACHEFLUSH_H */