diff options
| author | Peter Xu <peterx@redhat.com> | 2017-04-07 18:59:11 +0800 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2017-04-20 15:22:41 -0300 |
| commit | faa362e3cc94bf739a89b457693e3fbd7a4b95c4 (patch) | |
| tree | 1351dee21f56aad7fa67295d6fb27e18d4928ca7 | |
| parent | bd2bfa4c52e5f4dc6dbaa5be0521aedc31cb53d9 (diff) | |
| download | focaccia-qemu-faa362e3cc94bf739a89b457693e3fbd7a4b95c4.tar.gz focaccia-qemu-faa362e3cc94bf739a89b457693e3fbd7a4b95c4.zip | |
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 <david@gibson.dropbear.id.au> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: \"Michael S. Tsirkin\" <mst@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <1491562755-23867-6-git-send-email-peterx@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
| -rw-r--r-- | include/exec/memory.h | 2 | ||||
| -rw-r--r-- | memory.c | 6 |
2 files changed, 8 insertions, 0 deletions
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) { |