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hv: Interrupt handling in ACRN partition mode

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ACRN in partition mode does not have vector and APIC ID remapping for
device interrupts. Only MSIs are supported. No IOAPIC and legacy interrupts
for the VMs in ACRN partition mode.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
This commit is contained in:
Sainath Grandhi
2018-08-09 12:31:47 -07:00
committed by lijinxia
parent 0c88f9b800
commit d0e9f244ed
4 changed files with 33 additions and 0 deletions
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22
hypervisor/arch/x86/irq.c
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@@ -431,6 +431,28 @@ ERR:
return;
}
#ifdef CONFIG_PARTITION_MODE
void partition_mode_dispatch_interrupt(struct intr_excp_ctx *ctx)
{
uint8_t vr = ctx->vector;
struct vcpu *vcpu;
/*
* There is no vector and APIC ID remapping for VMs in
* ACRN partition mode. Device interrupts are injected with the same
* vector into vLAPIC of vCPU running on the pCPU. Vectors used for
* HV services are handled by HV using dispatch_interrupt.
*/
vcpu = per_cpu(vcpu, get_cpu_id());
if (vr < VECTOR_FOR_PRI_START) {
send_lapic_eoi();
vlapic_intr_edge(vcpu, vr);
} else {
dispatch_interrupt(ctx);
}
}
#endif
int handle_level_interrupt_common(struct irq_desc *desc,
__unused void *handler_data)
{