Vfio: Enable multi vectors in irq_enable()

When msix is enabled, msix will have multi vectors, this patch enable
mutlti vectors in vfio_device.irq_enable() function.

BUG=chromium:992270
TEST=passthrough a device with msix capability to guest, and check
device msix function in guest

Change-Id: I5f8265e7badec8551ff9a974462f08425ee93ab2
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1987813
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/devices/src/pci/vfio_pci.rs b/devices/src/pci/vfio_pci.rs
index 216c6b2..766cbcf 100644
--- a/devices/src/pci/vfio_pci.rs
+++ b/devices/src/pci/vfio_pci.rs
@@ -468,7 +468,9 @@ impl VfioPciDevice {
         }
 
         if let Some(ref interrupt_evt) = self.interrupt_evt {
-            if let Err(e) = self.device.irq_enable(interrupt_evt, VfioIrqType::Intx) {
+            let mut fds = Vec::new();
+            fds.push(interrupt_evt);
+            if let Err(e) = self.device.irq_enable(fds, VfioIrqType::Intx) {
                 error!("Intx enable failed: {}", e);
                 return;
             }
@@ -524,7 +526,9 @@ impl VfioPciDevice {
             }
         };
 
-        if let Err(e) = self.device.irq_enable(irqfd, VfioIrqType::Msi) {
+        let mut fds = Vec::new();
+        fds.push(irqfd);
+        if let Err(e) = self.device.irq_enable(fds, VfioIrqType::Msi) {
             error!("failed to enable msi: {}", e);
             self.enable_intx();
             return;