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authorLe Tan <tamlokveer@gmail.com>2014-08-16 13:55:40 +0800
committerMichael S. Tsirkin <mst@redhat.com>2014-08-28 23:10:22 +0200
commita52a7fdfa7512c9d095f2d5797c3c423dec43dbc (patch)
tree3cbf148321f74ed3e8146dffa60111b06f543c22 /include/hw/boards.h
parentd4eb911935640139eef7f1dd5cf9db7141578554 (diff)
intel-iommu: add Intel IOMMU emulation to q35 and add a machine option "iommu" as a switch
Add Intel IOMMU emulation to q35 chipset and expose it to the guest. 1. Add a machine option. Users can use "-machine iommu=on|off" in the command line to enable/disable Intel IOMMU. The default is off. 2. Accroding to the machine option, q35 will initialize the Intel IOMMU and use pci_setup_iommu() to setup q35_host_dma_iommu() as the IOMMU function for the pci bus. 3. q35_host_dma_iommu() will return different address space according to the bus_num and devfn of the device. Signed-off-by: Le Tan <tamlokveer@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/boards.h')
-rw-r--r--include/hw/boards.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 605a970934..dfb6718dc1 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -123,6 +123,7 @@ struct MachineState {
bool mem_merge;
bool usb;
char *firmware;
+ bool iommu;
ram_addr_t ram_size;
ram_addr_t maxram_size;