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runtime-rs: define VFIO unbind path as a const

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In src/runtime-rs/crates/hypervisor/src/device/vfio.rs,
the path of new_id is defined as a const, but unbind is used
as a local variable, they should be unified to const.

Fixes: #5189

Signed-off-by: Bin Liu <bin@hyper.sh>
This commit is contained in:
Bin Liu 2022-09-19 16:08:35 +08:00
parent 32a9d6d66d
commit 2caee1f38d
1 changed files with 4 additions and 4 deletions
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8
src/runtime-rs/crates/hypervisor/src/device/vfio.rs
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@ -21,6 +21,7 @@ fn override_driver(bdf: &str, driver: &str) -> Result<()> {
const SYS_PCI_DEVICES_PATH: &str = "/sys/bus/pci/devices";
const PCI_DRIVER_PROBE: &str = "/sys/bus/pci/drivers_probe";
const VFIO_NEW_ID_PATH: &str = "/sys/bus/pci/drivers/vfio-pci/new_id";
const VFIO_UNBIND_PATH: &str = "/sys/bus/pci/drivers/vfio-pci/unbind";
pub const VFIO_PCI: &str = "vfio-pci";
@ -132,11 +133,10 @@ pub fn bind_device_to_host(bdf: &str, host_driver: &str, _vendor_device_id: &str
override_driver(bdf, host_driver).context("override driver")?;
let unbind_path = "/sys/bus/pci/drivers/vfio-pci/unbind";
// echo bdf > /sys/bus/pci/drivers/vfio-pci/unbind"
std::fs::write(unbind_path, bdf).with_context(|| format!("echo {}> {}", bdf, unbind_path))?;
info!(sl!(), "echo {} > {}", bdf, unbind_path);
std::fs::write(VFIO_UNBIND_PATH, bdf)
.with_context(|| format!("echo {}> {}", bdf, VFIO_UNBIND_PATH))?;
info!(sl!(), "echo {} > {}", bdf, VFIO_UNBIND_PATH);
// echo bdf > /sys/bus/pci/drivers_probe
std::fs::write(PCI_DRIVER_PROBE, bdf)