From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: [PATCH 02/19] iommu/vt-d: Init QI before root entry is allocated Date: Sat, 13 Jun 2015 08:47:10 +0200 Message-ID: <1434178047-17809-3-git-send-email-joro@8bytes.org> References: <1434178047-17809-1-git-send-email-joro@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1434178047-17809-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Cc: Joerg Roedel , David Woodhouse , jroedel-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, zhen-hual-VXdhtT5mjnY@public.gmane.org, dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org List-Id: iommu@lists.linux-foundation.org From: Joerg Roedel QI needs to be available when we write the root entry into hardware because flushes might be necessary after this. Signed-off-by: Joerg Roedel --- drivers/iommu/intel-iommu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 14af51d..b380fd1 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2783,6 +2783,8 @@ static int __init init_dmars(void) for_each_active_iommu(iommu, drhd) { g_iommus[iommu->seq_id] = iommu; + intel_iommu_init_qi(iommu); + ret = iommu_init_domains(iommu); if (ret) goto free_iommu; @@ -2799,9 +2801,6 @@ static int __init init_dmars(void) hw_pass_through = 0; } - for_each_active_iommu(iommu, drhd) - intel_iommu_init_qi(iommu); - if (iommu_pass_through) iommu_identity_mapping |= IDENTMAP_ALL; -- 1.9.1