From faa362e3cc94bf739a89b457693e3fbd7a4b95c4 Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Fri, 7 Apr 2017 18:59:11 +0800 Subject: [PATCH] memory: add MemoryRegionIOMMUOps.replay() callback 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 adds one more hook for IOMMUOps for the callback, and it'll override the default if set. Reviewed-by: David Gibson Reviewed-by: Eric Auger Reviewed-by: \"Michael S. Tsirkin\" Signed-off-by: Peter Xu Message-Id: <1491562755-23867-6-git-send-email-peterx@redhat.com> Signed-off-by: Eduardo Habkost --- 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 055b3a8b23..c0280b7064 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -191,6 +191,8 @@ 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 ded4bf13d6..b782d5bc5a 100644 --- a/memory.c +++ b/memory.c @@ -1626,6 +1626,12 @@ 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) {