From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932648AbdLGRT4 (ORCPT ); Thu, 7 Dec 2017 12:19:56 -0500 Received: from omzsmtpe02.verizonbusiness.com ([199.249.25.209]:37114 "EHLO omzsmtpe02.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756104AbdLGPwP (ORCPT ); Thu, 7 Dec 2017 10:52:15 -0500 From: alexander.levin@verizon.com Cc: Gary R Hook , Alex Williamson , alexander.levin@verizon.com X-Host: surveyor.tdc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.9 108/156] iommu/amd: Limit the IOVA page range to the specified addresses Thread-Topic: [PATCH AUTOSEL for 4.9 108/156] iommu/amd: Limit the IOVA page range to the specified addresses Thread-Index: AQHTb3Lz8d1PMnIIXEqLVQ5yLwKAZA== Date: Thu, 7 Dec 2017 15:49:22 +0000 Message-ID: <20171207154845.4814-108-alexander.levin@verizon.com> References: <20171207154845.4814-1-alexander.levin@verizon.com> In-Reply-To: <20171207154845.4814-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id vB7HLPaX027111 From: Gary R Hook [ Upstream commit b92b4fb5c14257c0e7eae291ecc1f7b1962e1699 ] The extent of pages specified when applying a reserved region should include up to the last page of the range, but not the page following the range. Signed-off-by: Gary R Hook Fixes: 8d54d6c8b8f3 ('iommu/amd: Implement apply_dm_region call-back') Signed-off-by: Alex Williamson Signed-off-by: Sasha Levin --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 1a0b110f12c0..0c910a863581 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3211,7 +3211,7 @@ static void amd_iommu_apply_dm_region(struct device *dev, unsigned long start, end; start = IOVA_PFN(region->start); - end = IOVA_PFN(region->start + region->length); + end = IOVA_PFN(region->start + region->length - 1); WARN_ON_ONCE(reserve_iova(&dma_dom->iovad, start, end) == NULL); } -- 2.11.0