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hv: ptdev: move softirq_dev_entry_list from vm structure to per_cpu region

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Using per_cpu list to record ptdev interrupts is more reasonable than
recording them per-vm. It makes dispatching such interrupts more easier
as we now do it in softirq which happens following interrupt context of
each pcpu.

Tracked-On: #3663
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Shuo A Liu
2019-09-03 11:50:01 +08:00
committed by wenlingz
parent 2cc45534d6
commit 4742d1c747
7 changed files with 18 additions and 22 deletions
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1
hypervisor/arch/x86/cpu.c
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@@ -248,6 +248,7 @@ void init_pcpu_post(uint16_t pcpu_id)
init_interrupt(pcpu_id);
timer_init();
ptdev_init();
/* Wait for boot processor to signal all secondary cores to continue */
wait_sync_change(&pcpu_sync, 0UL);

9
hypervisor/arch/x86/guest/assign.c
View File

@@ -520,11 +520,8 @@ static void ptirq_handle_intx(struct acrn_vm *vm,
void ptirq_softirq(uint16_t pcpu_id)
{
struct acrn_vcpu *vcpu = per_cpu(vcpu, pcpu_id);
struct acrn_vm *vm = vcpu->vm;
while (1) {
struct ptirq_remapping_info *entry = ptirq_dequeue_softirq(vm);
struct ptirq_remapping_info *entry = ptirq_dequeue_softirq(pcpu_id);
struct ptirq_msi_info *msi;
if (entry == NULL) {
@@ -541,11 +538,11 @@ void ptirq_softirq(uint16_t pcpu_id)
/* handle real request */
if (entry->intr_type == PTDEV_INTR_INTX) {
ptirq_handle_intx(vm, entry);
ptirq_handle_intx(entry->vm, entry);
} else {
if (msi != NULL) {
/* TODO: msi destmode check required */
(void)vlapic_intr_msi(vm, msi->vmsi_addr.full, msi->vmsi_data.full);
(void)vlapic_intr_msi(entry->vm, msi->vmsi_addr.full, msi->vmsi_data.full);
dev_dbg(ACRN_DBG_PTIRQ, "dev-assign: irq=0x%x MSI VR: 0x%x-0x%x",
entry->allocated_pirq,
msi->vmsi_data.bits.vector,

2
hypervisor/arch/x86/guest/vm.c
View File

@@ -478,8 +478,6 @@ int32_t create_vm(uint16_t vm_id, struct acrn_vm_config *vm_config, struct acrn_
if (status == 0) {
prepare_epc_vm_memmap(vm);
INIT_LIST_HEAD(&vm->softirq_dev_entry_list);
spinlock_init(&vm->softirq_dev_lock);
spinlock_init(&vm->vm_lock);
vm->arch_vm.vlapic_state = VM_VLAPIC_XAPIC;