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vmm: Make sure to retry creating the VM on EINTR

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If the ioctl syscall KVM_CREATE_VM gets interrupted while creating the
VM, it is expected that we should retry since EINTR should not be
considered a standard error.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-02-05 09:35:56 +01:00
parent 671b49ba23
commit 62ccccc303
1 changed files with 18 additions and 1 deletions
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19
vmm/src/vm.rs
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@ -241,7 +241,24 @@ impl Vm {
let kernel = File::open(&config.lock().unwrap().kernel.as_ref().unwrap().path)
.map_err(Error::KernelFile)?;
let fd = kvm.create_vm().map_err(Error::VmCreate)?;
let fd: VmFd;
loop {
match kvm.create_vm() {
Ok(res) => fd = res,
Err(e) => {
if e.errno() == libc::EINTR {
// If the error returned is EINTR, which means the
// ioctl has been interrupted, we have to retry as
// this can't be considered as a regular error.
continue;
} else {
return Err(Error::VmCreate(e));
}
}
}
break;
}
let fd = Arc::new(fd);
// Set TSS