From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57628) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d8MZz-00066K-CA for qemu-devel@nongnu.org; Wed, 10 May 2017 04:02:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d8MZy-00015F-8L for qemu-devel@nongnu.org; Wed, 10 May 2017 04:02:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45242) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d8MZx-00013x-Vt for qemu-devel@nongnu.org; Wed, 10 May 2017 04:02:38 -0400 From: Peter Xu Date: Wed, 10 May 2017 16:01:46 +0800 Message-Id: <1494403315-12760-4-git-send-email-peterx@redhat.com> In-Reply-To: <1494403315-12760-1-git-send-email-peterx@redhat.com> References: <1494403315-12760-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH v3 03/12] memory: remove the last param in memory_region_iommu_replay() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: David Gibson , "Michael S . Tsirkin" , yi.l.liu@intel.com, Marcel Apfelbaum , Lan Tianyu , peterx@redhat.com, Jason Wang , Paolo Bonzini We were always passing in that one as "false" to assume that's an read operation, and we also assume that IOMMU translation would always have that read permission. A better permission would be IOMMU_NONE since the replay is after all not a real read operation, but just a page table rebuilding process. CC: David Gibson CC: Paolo Bonzini Reviewed-by: David Gibson Acked-by: Paolo Bonzini Signed-off-by: Peter Xu --- hw/vfio/common.c | 2 +- include/exec/memory.h | 5 +---- memory.c | 8 +++----- 3 files changed, 5 insertions(+), 10 deletions(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index a8f12ee..b9abe77 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -502,7 +502,7 @@ static void vfio_listener_region_add(MemoryListener *listener, QLIST_INSERT_HEAD(&container->giommu_list, giommu, giommu_next); memory_region_register_iommu_notifier(giommu->iommu, &giommu->n); - memory_region_iommu_replay(giommu->iommu, &giommu->n, false); + memory_region_iommu_replay(giommu->iommu, &giommu->n); return; } diff --git a/include/exec/memory.h b/include/exec/memory.h index 97fd0c2..bfdc685 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -731,11 +731,8 @@ void memory_region_register_iommu_notifier(MemoryRegion *mr, * * @mr: the memory region to observe * @n: the notifier to which to replay iommu mappings - * @is_write: Whether to treat the replay as a translate "write" - * through the iommu */ -void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, - bool is_write); +void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n); /** * memory_region_iommu_replay_all: replay existing IOMMU translations diff --git a/memory.c b/memory.c index 3f0aae8..0ddc4cc 100644 --- a/memory.c +++ b/memory.c @@ -1620,12 +1620,10 @@ uint64_t memory_region_iommu_get_min_page_size(MemoryRegion *mr) return TARGET_PAGE_SIZE; } -void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, - bool is_write) +void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n) { hwaddr addr, granularity; IOMMUTLBEntry iotlb; - IOMMUAccessFlags flag = is_write ? IOMMU_WO : IOMMU_RO; /* If the IOMMU has its own replay callback, override */ if (mr->iommu_ops->replay) { @@ -1636,7 +1634,7 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, granularity = memory_region_iommu_get_min_page_size(mr); for (addr = 0; addr < memory_region_size(mr); addr += granularity) { - iotlb = mr->iommu_ops->translate(mr, addr, flag); + iotlb = mr->iommu_ops->translate(mr, addr, IOMMU_NONE); if (iotlb.perm != IOMMU_NONE) { n->notify(n, &iotlb); } @@ -1654,7 +1652,7 @@ void memory_region_iommu_replay_all(MemoryRegion *mr) IOMMUNotifier *notifier; IOMMU_NOTIFIER_FOREACH(notifier, mr) { - memory_region_iommu_replay(mr, notifier, false); + memory_region_iommu_replay(mr, notifier); } } -- 2.7.4