From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757910AbYLDRfn (ORCPT ); Thu, 4 Dec 2008 12:35:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758151AbYLDRcN (ORCPT ); Thu, 4 Dec 2008 12:32:13 -0500 Received: from outbound-dub.frontbridge.com ([213.199.154.16]:47323 "EHLO IE1EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758711AbYLDRcI (ORCPT ); Thu, 4 Dec 2008 12:32:08 -0500 X-BigFish: VPS3(zzzzzzz32i43j65h) X-Spam-TCS-SCL: 4:0 X-WSS-ID: 0KBD4P7-04-YDL-01 From: Joerg Roedel To: avi@redhat.com, mingo@redhat.com, dwmw2@infradead.org, gregkh@suse.de, weidong.han@intel.com CC: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Joerg Roedel Subject: [PATCH 08/19] AMD IOMMU: add iommu_flush_domain function Date: Thu, 4 Dec 2008 18:31:45 +0100 Message-ID: <1228411916-22668-9-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <20081204172142.GH12816@amd.com> References: <20081204172142.GH12816@amd.com> X-OriginalArrivalTime: 04 Dec 2008 17:31:57.0152 (UTC) FILETIME=[34D75600:01C95636] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Impact: add a function to flush a domain id on every IOMMU Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index d4d0369..3fb5a04 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -350,6 +350,28 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid) iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1); } +/* + * This function is used to flush the IO/TLB for a given protection domain + * on every IOMMU in the system + */ +static void iommu_flush_domain(u16 domid) +{ + unsigned long flags; + struct amd_iommu *iommu; + struct iommu_cmd cmd; + + __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS, + domid, 1, 1); + + list_for_each_entry(iommu, &amd_iommu_list, list) { + spin_lock_irqsave(&iommu->lock, flags); + __iommu_queue_command(iommu, &cmd); + __iommu_completion_wait(iommu); + __iommu_wait_for_completion(iommu); + spin_unlock_irqrestore(&iommu->lock, flags); + } +} + /**************************************************************************** * * The functions below are used the create the page table mappings for -- 1.5.6.4