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| author | Le Tan <tamlokveer@gmail.com> | 2014-08-16 13:55:40 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-08-28 23:10:22 +0200 |
| commit | a52a7fdfa7512c9d095f2d5797c3c423dec43dbc (patch) | |
| tree | 3cbf148321f74ed3e8146dffa60111b06f543c22 /vl.c | |
| parent | d4eb911935640139eef7f1dd5cf9db7141578554 (diff) | |
| download | focaccia-qemu-a52a7fdfa7512c9d095f2d5797c3c423dec43dbc.tar.gz focaccia-qemu-a52a7fdfa7512c9d095f2d5797c3c423dec43dbc.zip | |
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 'vl.c')
| -rw-r--r-- | vl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/vl.c b/vl.c index b796c67e9d..cca012a7de 100644 --- a/vl.c +++ b/vl.c @@ -388,6 +388,10 @@ static QemuOptsList qemu_machine_opts = { .name = PC_MACHINE_MAX_RAM_BELOW_4G, .type = QEMU_OPT_SIZE, .help = "maximum ram below the 4G boundary (32bit boundary)", + },{ + .name = "iommu", + .type = QEMU_OPT_BOOL, + .help = "Set on/off to enable/disable Intel IOMMU (VT-d)", }, { /* End of list */ } }, |