From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48811) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cUYws-0001mL-G0 for qemu-devel@nongnu.org; Fri, 20 Jan 2017 08:09:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cUYwr-0002am-Hd for qemu-devel@nongnu.org; Fri, 20 Jan 2017 08:09:46 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58270) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cUYwr-0002ac-BM for qemu-devel@nongnu.org; Fri, 20 Jan 2017 08:09:45 -0500 From: Peter Xu Date: Fri, 20 Jan 2017 21:08:50 +0800 Message-Id: <1484917736-32056-15-git-send-email-peterx@redhat.com> In-Reply-To: <1484917736-32056-1-git-send-email-peterx@redhat.com> References: <1484917736-32056-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH RFC v4 14/20] memory: add MemoryRegionIOMMUOps.replay() callback List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: tianyu.lan@intel.com, kevin.tian@intel.com, mst@redhat.com, jan.kiszka@siemens.com, jasowang@redhat.com, peterx@redhat.com, alex.williamson@redhat.com, bd.aviv@gmail.com Originally we have one memory_region_iommu_replay() function, which is the default behavior to replay the translations of the whole IOMMU region. However, on some platform like x86, we may want our own replay logic for IOMMU regions. This patch add one more hook for IOMMUOps for the callback, and it'll override the default if set. Signed-off-by: Peter Xu --- include/exec/memory.h | 2 ++ memory.c | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 75371e9..bb4e654 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -195,6 +195,8 @@ struct MemoryRegionIOMMUOps { void (*notify_flag_changed)(MemoryRegion *iommu, IOMMUNotifierFlag old_flags, IOMMUNotifierFlag new_flags); + /* Set this up to provide customized IOMMU replay function */ + void (*replay)(MemoryRegion *iommu, IOMMUNotifier *notifier); }; typedef struct CoalescedMemoryRange CoalescedMemoryRange; diff --git a/memory.c b/memory.c index a4affda..169ead6 100644 --- a/memory.c +++ b/memory.c @@ -1630,6 +1630,12 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, hwaddr addr, granularity; IOMMUTLBEntry iotlb; + /* If the IOMMU has its own replay callback, override */ + if (mr->iommu_ops->replay) { + mr->iommu_ops->replay(mr, n); + return; + } + granularity = memory_region_iommu_get_min_page_size(mr); for (addr = 0; addr < memory_region_size(mr); addr += granularity) { -- 2.7.4