From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko =?ISO-8859-1?Q?St=FCbner?= Subject: Re: [PATCH 1/9] mm: Introduce new vm_insert_range API Date: Wed, 28 Nov 2018 16:21:05 +0100 Message-ID: <3555131.qyOKUBSTPx@diego> References: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Souptick Joarder Cc: mhocko@suse.com, peterz@infradead.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux1394-devel@lists.sourceforge.net, m.szyprowski@samsung.com, sfr@canb.auug.org.au, oleksandr_andrushchenko@epam.com, linux@armlinux.org.uk, willy@infradead.org, airlied@linux.ie, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, treding@nvidia.com, linux-media@vger.kernel.org, keescook@chromium.org, pawel@osciak.com, riel@surriel.com, iommu@lists.linux-foundation.org, rppt@linux.vnet.ibm.com, boris.ostrovsky@oracle.com, mchehab@kernel.org, iamjoonsoo.kim@lge.com, vbabka@suse.cz, jgross@suse.com, xen-devel@lists.xen.org, kyungmin.park@samsung.com, stefanr@s5r6.in-berlin.de, akpm@linux-foundation.org, robin.murphy@arm.com, kirill.shutemov@linux.intel.com List-Id: iommu@lists.linux-foundation.org QW0gRG9ubmVyc3RhZywgMTUuIE5vdmVtYmVyIDIwMTgsIDE2OjQ1OjMwIENFVCBzY2hyaWViIFNv dXB0aWNrIEpvYXJkZXI6Cj4gUHJldmlvdWx5IGRyaXZlcnMgaGF2ZSB0aGVpciBvd24gd2F5IG9m IG1hcHBpbmcgcmFuZ2Ugb2YKPiBrZXJuZWwgcGFnZXMvbWVtb3J5IGludG8gdXNlciB2bWEgYW5k IHRoaXMgd2FzIGRvbmUgYnkKPiBpbnZva2luZyB2bV9pbnNlcnRfcGFnZSgpIHdpdGhpbiBhIGxv b3AuCj4gCj4gQXMgdGhpcyBwYXR0ZXJuIGlzIGNvbW1vbiBhY3Jvc3MgZGlmZmVyZW50IGRyaXZl cnMsIGl0IGNhbgo+IGJlIGdlbmVyYWxpemVkIGJ5IGNyZWF0aW5nIGEgbmV3IGZ1bmN0aW9uIGFu ZCB1c2UgaXQgYWNyb3NzCj4gdGhlIGRyaXZlcnMuCj4gCj4gdm1faW5zZXJ0X3JhbmdlIGlzIHRo ZSBuZXcgQVBJIHdoaWNoIHdpbGwgYmUgdXNlZCB0byBtYXAgYQo+IHJhbmdlIG9mIGtlcm5lbCBt ZW1vcnkvcGFnZXMgdG8gdXNlciB2bWEuCj4gCj4gU2lnbmVkLW9mZi1ieTogU291cHRpY2sgSm9h cmRlciA8anJkci5saW51eEBnbWFpbC5jb20+Cj4gUmV2aWV3ZWQtYnk6IE1hdHRoZXcgV2lsY294 IDx3aWxseUBpbmZyYWRlYWQub3JnPgoKRXhjZXB0IHRoZSBtaXNzaW5nIEVYUE9SVF9TWU1CT0wg Zm9yIG1vZHVsZSBidWlsZHMgdGhpcyBuZXcKQVBJIGlzIHN1cHBvc2VkIHRvIHJ1biBhbHNvIHdp dGhpbiB0aGUgUm9ja2NoaXAgZHJtIGRyaXZlciwgc28Kb24gcmszMTg4LCByazMyODgsIHJrMzMy OCBhbmQgcmszMzk5IHdpdGggZ3JhcGhpY3MKVGVzdGVkLWJ5OiBIZWlrbyBTdHVlYm5lciA8aGVp a29Ac250ZWNoLmRlPgoKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3Rv cC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmkt ZGV2ZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 From: heiko@sntech.de (Heiko =?ISO-8859-1?Q?St=FCbner?=) Date: Wed, 28 Nov 2018 16:21:05 +0100 Subject: [PATCH 1/9] mm: Introduce new vm_insert_range API In-Reply-To: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> References: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> Message-ID: <3555131.qyOKUBSTPx@diego> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am Donnerstag, 15. November 2018, 16:45:30 CET schrieb Souptick Joarder: > Previouly drivers have their own way of mapping range of > kernel pages/memory into user vma and this was done by > invoking vm_insert_page() within a loop. > > As this pattern is common across different drivers, it can > be generalized by creating a new function and use it across > the drivers. > > vm_insert_range is the new API which will be used to map a > range of kernel memory/pages to user vma. > > Signed-off-by: Souptick Joarder > Reviewed-by: Matthew Wilcox Except the missing EXPORT_SYMBOL for module builds this new API is supposed to run also within the Rockchip drm driver, so on rk3188, rk3288, rk3328 and rk3399 with graphics Tested-by: Heiko Stuebner From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from gloria.sntech.de ([185.11.138.130]:45110 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727789AbeK2CYA (ORCPT ); Wed, 28 Nov 2018 21:24:00 -0500 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: Souptick Joarder Cc: akpm@linux-foundation.org, willy@infradead.org, mhocko@suse.com, kirill.shutemov@linux.intel.com, vbabka@suse.cz, riel@surriel.com, sfr@canb.auug.org.au, rppt@linux.vnet.ibm.com, peterz@infradead.org, linux@armlinux.org.uk, robin.murphy@arm.com, iamjoonsoo.kim@lge.com, treding@nvidia.com, keescook@chromium.org, m.szyprowski@samsung.com, stefanr@s5r6.in-berlin.de, hjc@rock-chips.com, airlied@linux.ie, oleksandr_andrushchenko@epam.com, joro@8bytes.org, pawel@osciak.com, kyungmin.park@samsung.com, mchehab@kernel.org, boris.ostrovsky@oracle.com, jgross@suse.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux1394-devel@lists.sourceforge.net, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, xen-devel@lists.xen.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org Subject: Re: [PATCH 1/9] mm: Introduce new vm_insert_range API Date: Wed, 28 Nov 2018 16:21:05 +0100 Message-ID: <3555131.qyOKUBSTPx@diego> In-Reply-To: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> References: <20181115154530.GA27872@jordon-HP-15-Notebook-PC> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-media-owner@vger.kernel.org List-ID: Am Donnerstag, 15. November 2018, 16:45:30 CET schrieb Souptick Joarder: > Previouly drivers have their own way of mapping range of > kernel pages/memory into user vma and this was done by > invoking vm_insert_page() within a loop. > > As this pattern is common across different drivers, it can > be generalized by creating a new function and use it across > the drivers. > > vm_insert_range is the new API which will be used to map a > range of kernel memory/pages to user vma. > > Signed-off-by: Souptick Joarder > Reviewed-by: Matthew Wilcox Except the missing EXPORT_SYMBOL for module builds this new API is supposed to run also within the Rockchip drm driver, so on rk3188, rk3288, rk3328 and rk3399 with graphics Tested-by: Heiko Stuebner