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hv: fix dest of IPI for CPU with lapic_pt

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With lapic_pt based on vlapic, guest always see vitual apic_id.
We need to convert the virtual apic_id from guest to physical apic_id
before writing ICR.

SMP for VM with lapic_pt is supported with this fix.

Tracked-On: #2351
Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yan, Like 2019-01-31 15:53:28 +08:00 committed by Eddie Dong
parent ea250c5147
commit 17f4cd18a3
2 changed files with 9 additions and 3 deletions
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11
hypervisor/arch/x86/guest/vlapic.c
View File

@ -2075,7 +2075,7 @@ static inline uint32_t x2apic_msr_to_regoff(uint32_t msr)
static int32_t
vlapic_x2apic_pt_icr_access(struct acrn_vm *vm, uint64_t val)
{
uint32_t apic_id = (uint32_t)(val >> 32U);
uint32_t papic_id, vapic_id = (uint32_t)(val >> 32U);
uint32_t icr_low = (uint32_t)val;
uint32_t mode = icr_low & APIC_DELMODE_MASK;
uint16_t vcpu_id;
@ -2092,7 +2092,7 @@ vlapic_x2apic_pt_icr_access(struct acrn_vm *vm, uint64_t val)
not supported in ICR forpartition mode\n");
ret = -1;
} else {
vcpu_id = vm_apicid2vcpu_id(vm, apic_id);
vcpu_id = vm_apicid2vcpu_id(vm, vapic_id);
target_vcpu = vcpu_from_vid(vm, vcpu_id);
if (target_vcpu != NULL) {
@ -2104,7 +2104,12 @@ vlapic_x2apic_pt_icr_access(struct acrn_vm *vm, uint64_t val)
vlapic_process_init_sipi(target_vcpu, mode, icr_low, vcpu_id);
break;
default:
msr_write(MSR_IA32_EXT_APIC_ICR, (((uint64_t)apic_id) << 32U) | icr_low);
/* convert the dest from virtual apic_id to physical apic_id */
papic_id = per_cpu(lapic_id, target_vcpu->pcpu_id);
dev_dbg(ACRN_DBG_LAPICPT,
"%s vapic_id: 0x%08lx papic_id: 0x%08lx icr_low:0x%08lx",
__func__, vapic_id, papic_id, icr_low);
msr_write(MSR_IA32_EXT_APIC_ICR, (((uint64_t)papic_id) << 32U) | icr_low);
break;
}
}

1
hypervisor/arch/x86/guest/vmcs.c
View File

@ -564,6 +564,7 @@ void switch_apicv_mode_x2apic(struct acrn_vcpu *vcpu)
{
uint32_t value32;
if (is_lapic_pt(vcpu->vm)) {
dev_dbg(ACRN_DBG_LAPICPT, "%s: switching to x2apic and passthru", __func__);
/*
* Disable external interrupt exiting and irq ack
* Disable posted interrupt processing