From patchwork Wed Sep 9 15:52:12 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Bottomley X-Patchwork-Id: 46414 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n89FrSUf002700 for ; Wed, 9 Sep 2009 15:53:29 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753226AbZIIPwq (ORCPT ); Wed, 9 Sep 2009 11:52:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752864AbZIIPwh (ORCPT ); Wed, 9 Sep 2009 11:52:37 -0400 Received: from cantor.suse.de ([195.135.220.2]:57683 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752489AbZIIPwb (ORCPT ); Wed, 9 Sep 2009 11:52:31 -0400 Received: from relay1.suse.de (mail2.suse.de [195.135.221.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.suse.de (Postfix) with ESMTP id 6CD61457F0; Wed, 9 Sep 2009 17:52:34 +0200 (CEST) From: James Bottomley To: linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-parisc@vger.kernel.org Cc: Russell King , Christoph Hellwig , Paul Mundt , James Bottomley Subject: [PATCH 2/6] parisc: add mm API for DMA to vmalloc/vmap areas Date: Wed, 9 Sep 2009 10:52:12 -0500 Message-Id: <1252511536-22066-3-git-send-email-James.Bottomley@suse.de> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1252511536-22066-2-git-send-email-James.Bottomley@suse.de> References: <1252511536-22066-1-git-send-email-James.Bottomley@suse.de> <1252511536-22066-2-git-send-email-James.Bottomley@suse.de> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org We already have an API to flush a kernel page along an alias address, so use it. The TLB purge prevents the CPU from doing speculative moveins on the flushed address, so we don't need to implement and invalidate. Signed-off-by: James Bottomley --- arch/parisc/include/asm/cacheflush.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h index 7243951..2536a00 100644 --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -90,6 +90,14 @@ static inline void flush_kernel_dcache_page(struct page *page) { flush_kernel_dcache_page_addr(page_address(page)); } +static inline void flush_kernel_dcache_addr(void *addr) +{ + flush_kernel_dcache_page_addr(addr); +} +static inline void invalidate_kernel_dcache_addr(void *addr) +{ + /* nop .. the flush prevents move in until the page is touched */ +} #ifdef CONFIG_DEBUG_RODATA void mark_rodata_ro(void);