Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423060AbbFEOL0 (ORCPT ); Fri, 5 Jun 2015 10:11:26 -0400 Received: from 8bytes.org ([81.169.241.247]:59194 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423037AbbFEOLR (ORCPT ); Fri, 5 Jun 2015 10:11:17 -0400 From: Joerg Roedel To: iommu@lists.linux-foundation.org Cc: zhen-hual@hp.com, bhe@redhat.com, dwmw2@infradead.org, vgoyal@redhat.com, dyoung@redhat.com, alex.williamson@redhat.com, ddutile@redhat.com, ishii.hironobu@jp.fujitsu.com, indou.takao@jp.fujitsu.com, bhelgaas@google.com, doug.hatch@hp.com, jerry.hoemann@hp.com, tom.vaden@hp.com, li.zhang6@hp.com, lisa.mitchell@hp.com, billsumnerlinux@gmail.com, rwright@hp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, kexec@lists.infradead.org, joro@8bytes.org, jroedel@suse.de Subject: [PATCH 05/17] iommu/vt-d: Mark root-entry present in set_root_entry Date: Fri, 5 Jun 2015 16:10:51 +0200 Message-Id: <1433513463-19128-6-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1433513463-19128-1-git-send-email-joro@8bytes.org> References: <1433513463-19128-1-git-send-email-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1072 Lines: 33 From: Joerg Roedel When we do no memcpy from the old to the new kernel for the root entry table, we have to set the present bit ourself. Tested-by: Baoquan He Signed-off-by: Joerg Roedel --- drivers/iommu/intel-iommu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index d66bec6..cda0901 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -198,8 +198,7 @@ static inline bool root_present(struct root_entry *root) static inline void set_root_value(struct root_entry *root, unsigned long value) { - root->lo &= ~VTD_PAGE_MASK; - root->lo |= value & VTD_PAGE_MASK; + root->lo = (value & VTD_PAGE_MASK) | 1; } static inline struct context_entry * -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/