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hv: pm: support shutting down multiple VMs when pCPUs are shared

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More than one VM may request shutdown on the same pCPU before
shutdown_vm_from_idle() is called in the idle thread when pCPUs are
shared among VMs.

Use a per-pCPU bitmap to store all the VMIDs requesting shutdown.

v1 -> v2:
- use vm_lock to avoid a race on shutdown

Tracked-On: #5411
Signed-off-by: Peter Fang <peter.fang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Peter Fang
2020-10-22 02:25:27 -07:00
committed by wenlingz
parent 63fd853df3
commit 70b1218952
4 changed files with 38 additions and 19 deletions
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3
hypervisor/common/hypercall.c
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@@ -256,10 +256,13 @@ int32_t hcall_destroy_vm(__unused struct acrn_vm *vm, struct acrn_vm *target_vm,
{
int32_t ret = -1;
get_vm_lock(target_vm);
if (is_paused_vm(target_vm)) {
/* TODO: check target_vm guest_flags */
ret = shutdown_vm(target_vm);
}
put_vm_lock(target_vm);
return ret;
}