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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_SANE_2 autolearn=unavailable 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 919F8C10F14 for ; Tue, 15 Oct 2019 05:25:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6F6DA2089C for ; Tue, 15 Oct 2019 05:25:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728294AbfJOFZe (ORCPT ); Tue, 15 Oct 2019 01:25:34 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:25467 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728254AbfJOFZd (ORCPT ); Tue, 15 Oct 2019 01:25:33 -0400 X-UUID: b4cbd657f3384a4d9f398a13e478d426-20191015 X-UUID: b4cbd657f3384a4d9f398a13e478d426-20191015 Received: from mtkcas32.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 420262602; Tue, 15 Oct 2019 13:25:21 +0800 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS32DR.mediatek.inc (172.27.6.104) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 15 Oct 2019 13:25:17 +0800 Received: from [10.17.3.153] (172.27.4.253) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 15 Oct 2019 13:25:16 +0800 Message-ID: <1571117118.19130.81.camel@mhfsdcap03> Subject: Re: [PATCH v3 4/7] iommu/mediatek: Delete the leaf in the tlb flush From: Yong Wu To: Robin Murphy CC: Matthias Brugger , Joerg Roedel , Will Deacon , , , Nicolas Boichat , , , , , , Evan Green , Tomasz Figa , , , Date: Tue, 15 Oct 2019 13:25:18 +0800 In-Reply-To: <20c74c20-864e-88af-3c58-ad3bb7600bcc@arm.com> References: <1571035101-4213-1-git-send-email-yong.wu@mediatek.com> <1571035101-4213-5-git-send-email-yong.wu@mediatek.com> <20c74c20-864e-88af-3c58-ad3bb7600bcc@arm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-SNTS-SMTP: 1320629692F0D088FC9AD967C2A18864D2766ABDB9AA66C650AFFE4EBC49898F2000:8 X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2019-10-14 at 15:22 +0100, Robin Murphy wrote: > On 14/10/2019 07:38, Yong Wu wrote: > > In our tlb range flush, we don't care the "leaf". Remove it to simplify > > the code. no functional change. > > Presumably you don't care about the granule either? Yes. I only keep "granule" to satisfy the format of "tlb_flush_walk", then it's no need add a new helper function. > > Robin. > > > Signed-off-by: Yong Wu > > --- > > drivers/iommu/mtk_iommu.c | 16 ++++------------ > > 1 file changed, 4 insertions(+), 12 deletions(-) > > > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > > index 8712afc..19f936c 100644 > > --- a/drivers/iommu/mtk_iommu.c > > +++ b/drivers/iommu/mtk_iommu.c > > @@ -174,8 +174,7 @@ static void mtk_iommu_tlb_flush_all(void *cookie) > > } > > > > static void mtk_iommu_tlb_add_flush_nosync(unsigned long iova, size_t size, > > - size_t granule, bool leaf, > > - void *cookie) > > + size_t granule, void *cookie) > > { > > struct mtk_iommu_data *data = cookie; > > > > @@ -219,14 +218,7 @@ static void mtk_iommu_tlb_sync(void *cookie) > > static void mtk_iommu_tlb_flush_walk(unsigned long iova, size_t size, > > size_t granule, void *cookie) > > { > > - mtk_iommu_tlb_add_flush_nosync(iova, size, granule, false, cookie); > > - mtk_iommu_tlb_sync(cookie); > > -} > > - > > -static void mtk_iommu_tlb_flush_leaf(unsigned long iova, size_t size, > > - size_t granule, void *cookie) > > -{ > > - mtk_iommu_tlb_add_flush_nosync(iova, size, granule, true, cookie); > > + mtk_iommu_tlb_add_flush_nosync(iova, size, granule, cookie); > > mtk_iommu_tlb_sync(cookie); > > } > > > > @@ -245,7 +237,7 @@ static void mtk_iommu_tlb_flush_page_nosync(struct iommu_iotlb_gather *gather, > > static const struct iommu_flush_ops mtk_iommu_flush_ops = { > > .tlb_flush_all = mtk_iommu_tlb_flush_all, > > .tlb_flush_walk = mtk_iommu_tlb_flush_walk, > > - .tlb_flush_leaf = mtk_iommu_tlb_flush_leaf, > > + .tlb_flush_leaf = mtk_iommu_tlb_flush_walk, > > .tlb_add_page = mtk_iommu_tlb_flush_page_nosync, > > }; > > > > @@ -475,7 +467,7 @@ static void mtk_iommu_iotlb_sync(struct iommu_domain *domain, > > spin_lock_irqsave(&dom->pgtlock, flags); > > > > mtk_iommu_tlb_add_flush_nosync(gather->start, length, gather->pgsize, > > - false, data); > > + data); > > mtk_iommu_tlb_sync(data); > > > > if (!is_in_gather) > > > > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-mediatek