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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no 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 1A2AFC433DF for ; Mon, 8 Jun 2020 04:41:55 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D42FB20825 for ; Mon, 8 Jun 2020 04:41:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZC0o0J9j" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D42FB20825 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7B0CB6B00AB; Mon, 8 Jun 2020 00:41:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 760CD6B00AC; Mon, 8 Jun 2020 00:41:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 677366B00AD; Mon, 8 Jun 2020 00:41:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0178.hostedemail.com [216.40.44.178]) by kanga.kvack.org (Postfix) with ESMTP id 4A2BB6B00AB for ; Mon, 8 Jun 2020 00:41:54 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 14960235BA for ; Mon, 8 Jun 2020 04:41:54 +0000 (UTC) X-FDA: 76904796948.21.clock54_010cab126db7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id E105618121D8B for ; Mon, 8 Jun 2020 04:41:53 +0000 (UTC) X-HE-Tag: clock54_010cab126db7 X-Filterd-Recvd-Size: 4080 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf41.hostedemail.com (Postfix) with ESMTP for ; Mon, 8 Jun 2020 04:41:53 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 92B572081A; Mon, 8 Jun 2020 04:41:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591591312; bh=e5bXvDFlBF0v/TYTyGxqi7kE8DaCWB9flbrS4EpjY0g=; h=Date:From:To:Subject:In-Reply-To:From; b=ZC0o0J9jA//ou05vRylkiCPVmR192pFIueuM3OOxmwEP7zT4OFzLduT1KyDVmBuwT j41ApwaSsaVj2d3Z4lWtFUjsURH+dl5+TGA58KgnBFdYr8kTHxCEVX0vuylOzxbTlr BJG3O15+JyMlH6NfJdWyW65DD5R2c/YV0WdOz5j8= Date: Sun, 07 Jun 2020 21:41:51 -0700 From: Andrew Morton To: akpm@linux-foundation.org, catalin.marinas@arm.com, hch@lst.de, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, will@kernel.org Subject: [patch 33/54] arm64: use asm-generic/cacheflush.h Message-ID: <20200608044151.TzsKIXB78%akpm@linux-foundation.org> In-Reply-To: <20200607212615.b050e41fac139a1e16fe00bd@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: E105618121D8B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Christoph Hellwig Subject: arm64: use asm-generic/cacheflush.h ARM64 needs almost no cache flushing routines of its own. Rely on asm-generic/cacheflush.h for the defaults. Link: http://lkml.kernel.org/r/20200515143646.3857579-10-hch@lst.de Signed-off-by: Christoph Hellwig Acked-by: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton --- arch/arm64/include/asm/cacheflush.h | 46 ++------------------------ 1 file changed, 5 insertions(+), 41 deletions(-) --- a/arch/arm64/include/asm/cacheflush.h~arm64-use-asm-generic-cacheflushh +++ a/arch/arm64/include/asm/cacheflush.h @@ -94,20 +94,7 @@ static inline void flush_icache_range(un 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 */ 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_icac 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 */ _