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devices:vfio-pci: Add close() for vfio pci device

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When vfio pci device is hotplug out from the guest machine, vfio device's
resource should be returned to system, so vfio pci device's close() is
needed.

BUG=b:185084350
TEST=Boot a guest and hotplug vfio pci device repeatedly

Change-Id: I4686d737e93ae6db6078851e2add3275b9faaa84
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2955574
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
This commit is contained in:
Xiong Zhang 2021-06-08 14:00:53 +08:00 committed by Commit Bot
parent 436fa1b807
commit 22dc9f80c4
1 changed files with 11 additions and 1 deletions
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12
devices/src/pci/vfio_pci.rs
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@ -868,11 +868,15 @@ impl VfioPciDevice {
}
}
fn enable_bars_mmap(&mut self) {
fn disable_bars_mmap(&mut self) {
for mmap_info in self.mmap_info.iter() {
self.remove_bar_mmap(mmap_info);
}
self.mmap_info.clear();
}
fn enable_bars_mmap(&mut self) {
self.disable_bars_mmap();
for mmio_info in self.mmio_regions.iter() {
let mut mmap_info =
@ -882,6 +886,12 @@ impl VfioPciDevice {
self.remap = false;
}
#[allow(dead_code)]
fn close(&mut self) {
self.disable_bars_mmap();
self.device.close();
}
}
impl PciDevice for VfioPciDevice {