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hv: vlapic: add vector check for x2apic SELF IPI

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Set when the local APIC detects an illegal vector (one in the range 0 to 15)
in the message that it is sending. This occurs as the result of a write to the
ICR (in both xAPIC and x2APIC modes) or to SELF IPI register (x2APIC mode only)
with an illegal vector.

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1 2019-03-04 23:47:28 +08:00 committed by wenlingz
parent e5d3a49894
commit 473d31c073
1 changed files with 7 additions and 2 deletions
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7
hypervisor/arch/x86/guest/vlapic.c
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@ -2456,10 +2456,15 @@ static void vlapic_x2apic_self_ipi_handler(struct acrn_vlapic *vlapic)
struct acrn_vcpu *target_vcpu;
lapic = &(vlapic->apic_page);
vector = lapic->self_ipi.v & 0xFFU;
vector = lapic->self_ipi.v & APIC_VECTOR_MASK;
target_vcpu = vlapic->vcpu;
if (vector < 16U) {
vlapic_set_error(vlapic, APIC_ESR_SEND_ILLEGAL_VECTOR);
dev_dbg(ACRN_DBG_LAPIC, "Ignoring invalid IPI %u", vector);
} else {
vlapic_set_intr(target_vcpu, vector, LAPIC_TRIG_EDGE);
}
}
int32_t apic_write_vmexit_handler(struct acrn_vcpu *vcpu)
{