From patchwork Mon Dec 24 13:24:53 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souptick Joarder X-Patchwork-Id: 10743587 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B035814DE for ; Thu, 27 Dec 2018 07:52:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A2D7C287B9 for ; Thu, 27 Dec 2018 07:52:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9764D287CF; Thu, 27 Dec 2018 07:52:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4EADC287B9 for ; Thu, 27 Dec 2018 07:52:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 470CA6E1B3; Thu, 27 Dec 2018 07:52:04 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3BD6B6E5D7 for ; Mon, 24 Dec 2018 13:20:58 +0000 (UTC) Received: by mail-pf1-x442.google.com with SMTP id 64so5797009pfr.9 for ; Mon, 24 Dec 2018 05:20:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=YwqNkUNPLYdK07Ra2/mSQ+jZoA95B8gqjnUO/EioucE=; b=gPDSExCiObtteW6g+x6sQmCKL+ebXAVg2vCLE6LmWpHnVoESkZLvN6TkEMfPY/oysD QNSkMk01nckYlNDphruo/kKoaGcZUsztoIaGrDSjUYkWiKU7d0WHN4U6CSSkKNIcpnZ4 W/eGhVZpePbLIjEyKtghRS5DBtRXRRb4qeLXWH11L64mTZeZConsB3wxDsZMj1BaPIc7 bv6uCPimAOUoGl9T5k/mZZjYHLQMm7+IAkWM1yTc2zWcjlRj0tirwNhfWdnCQbm+UwaR zcB8qC+Hx87d1tD1c83Jyy705jwa4t/R9vermcSYtMxz4HnPXu2PPMzMPBr8jwApxr0n qkIg== X-Gm-Message-State: AJcUukctRjLmuTsXERw+uPw418Ik3I46AzadEyG4N7ryEa7R7C5nIi9Q Fp1YXhxj/kJTpDWuQTJI04g= X-Google-Smtp-Source: ALg8bN5/gh7iKSFeVbCDxnlm68Sjq9dvwVK/fGxmQ8vvM0+wZbEa4aML94BwBBLnwyDRbrgezk3ImQ== X-Received: by 2002:a62:c185:: with SMTP id i127mr620171pfg.43.1545657657811; Mon, 24 Dec 2018 05:20:57 -0800 (PST) Received: from jordon-HP-15-Notebook-PC ([106.51.18.181]) by smtp.gmail.com with ESMTPSA id 84sm87589245pfa.115.2018.12.24.05.20.56 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 24 Dec 2018 05:20:56 -0800 (PST) Date: Mon, 24 Dec 2018 18:54:53 +0530 From: Souptick Joarder To: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, oleksandr_andrushchenko@epam.com, airlied@linux.ie, linux@armlinux.org.uk, robin.murphy@arm.com Subject: [PATCH v5 5/9] drm/xen/xen_drm_front_gem.c: Convert to use vm_insert_range Message-ID: <20181224132453.GA22132@jordon-HP-15-Notebook-PC> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Mailman-Approved-At: Thu, 27 Dec 2018 07:52:03 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, xen-devel@lists.xen.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Convert to use vm_insert_range() to map range of kernel memory to user vma. Signed-off-by: Souptick Joarder Reviewed-by: Matthew Wilcox Reviewed-by: Oleksandr Andrushchenko --- drivers/gpu/drm/xen/xen_drm_front_gem.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c index 47ff019..c21e5d1 100644 --- a/drivers/gpu/drm/xen/xen_drm_front_gem.c +++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c @@ -225,8 +225,7 @@ struct drm_gem_object * static int gem_mmap_obj(struct xen_gem_object *xen_obj, struct vm_area_struct *vma) { - unsigned long addr = vma->vm_start; - int i; + int ret; /* * clear the VM_PFNMAP flag that was set by drm_gem_mmap(), and set the @@ -247,18 +246,11 @@ static int gem_mmap_obj(struct xen_gem_object *xen_obj, * FIXME: as we insert all the pages now then no .fault handler must * be called, so don't provide one */ - for (i = 0; i < xen_obj->num_pages; i++) { - int ret; - - ret = vm_insert_page(vma, addr, xen_obj->pages[i]); - if (ret < 0) { - DRM_ERROR("Failed to insert pages into vma: %d\n", ret); - return ret; - } - - addr += PAGE_SIZE; - } - return 0; + ret = vm_insert_range(vma, vma->vm_start, xen_obj->pages, + xen_obj->num_pages); + if (ret < 0) + DRM_ERROR("Failed to insert pages into vma: %d\n", ret); + return ret; } int xen_drm_front_gem_mmap(struct file *filp, struct vm_area_struct *vma)