aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorJason Wang <jasowang@redhat.com>2016-12-30 18:09:13 +0800
committerMichael S. Tsirkin <mst@redhat.com>2017-01-10 05:56:58 +0200
commit052c8fa9983f553fdfa0d61034774070dd639c2b (patch)
tree5883498a87ba78e92ec7d11e91cf1d813fab3050 /include
parent2d3fc5816eb629a14f8516bf3c964d7f266870c0 (diff)
exec: introduce address_space_get_iotlb_entry()
This patch introduces a helper to query the iotlb entry for a possible iova. This will be used by later device IOTLB API to enable the capability for a dataplane (e.g vhost) to query the IOTLB. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/exec/memory.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 64560f61b4..358edfbbc7 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1537,6 +1537,11 @@ void stl_le_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val);
void stl_be_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val);
void stq_le_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint64_t val);
void stq_be_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint64_t val);
+/* address_space_get_iotlb_entry: translate an address into an IOTLB
+ * entry. Should be called from an RCU critical section.
+ */
+IOMMUTLBEntry address_space_get_iotlb_entry(AddressSpace *as, hwaddr addr,
+ bool is_write);
/* address_space_translate: translate an address range into an address space
* into a MemoryRegion and an address range into that section. Should be