From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51769) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRsDh-0002lJ-BD for qemu-devel@nongnu.org; Thu, 12 Jan 2017 22:08:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cRsDg-0007m9-Ia for qemu-devel@nongnu.org; Thu, 12 Jan 2017 22:08:01 -0500 Received: from mx1.redhat.com ([209.132.183.28]:30063) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cRsDg-0007ka-Bm for qemu-devel@nongnu.org; Thu, 12 Jan 2017 22:08:00 -0500 From: Peter Xu Date: Fri, 13 Jan 2017 11:06:36 +0800 Message-Id: <1484276800-26814-11-git-send-email-peterx@redhat.com> In-Reply-To: <1484276800-26814-1-git-send-email-peterx@redhat.com> References: <1484276800-26814-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH RFC v3 10/14] 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 f367e54..cff6958 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -181,6 +181,8 @@ 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 6e4c872..609ac67 100644 --- a/memory.c +++ b/memory.c @@ -1629,6 +1629,12 @@ 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