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vfio: use correct flags to disable interrupts

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The comments of vfio kernel module said that individual subindex
interrupts can be disabled using the -1 value for DATA_EVENTFD or
the index can be disabled as a whole with:
    flags = (DATA_NONE|ACTION_TRIGGER), count = 0.

Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com>
CC: Liu Jiang <gerry@linux.alibaba.com>
This commit is contained in:
Wu Zongyong 2019-11-20 15:42:45 +08:00 committed by Rob Bradford
parent 5208ff86c8
commit 1dfd60b609
1 changed files with 2 additions and 2 deletions
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4
vfio/src/vfio_device.rs
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@ -692,10 +692,10 @@ impl VfioDevice {
let mut irq_set = vec_with_array_field::<vfio_irq_set, u32>(0);
irq_set[0].argsz = mem::size_of::<vfio_irq_set>() as u32;
irq_set[0].flags = VFIO_IRQ_SET_ACTION_MASK;
irq_set[0].flags = VFIO_IRQ_SET_ACTION_TRIGGER | VFIO_IRQ_SET_DATA_NONE;
irq_set[0].index = irq_index;
irq_set[0].start = 0;
irq_set[0].count = irq.count;
irq_set[0].count = 0;
// Safe as we are the owner of self and irq_set which are valid value
let ret = unsafe { ioctl_with_ref(self, VFIO_DEVICE_SET_IRQS(), &irq_set[0]) };