From: Benjamin Herrenschmidt <b...@kernel.crashing.org>
This adds support for the H_IPOLL hypercall which the guest
uses to poll for a pending interrupt. This hypercall is
mandatory for PAPR+ and there is no way for the guest to
detect whether it is supported or not so just add it.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
Acked-by: Alexander Graf <ag...@suse.de>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
hw/intc/xics.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 1c6e6f5..eb93276 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -689,6 +689,18 @@ static target_ulong h_eoi(PowerPCCPU *cpu,
sPAPREnvironment *spapr,
return H_SUCCESS;
}
+static target_ulong h_ipoll(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+ target_ulong opcode, target_ulong *args)
+{
+ CPUState *cs = CPU(cpu);
+ ICPState *ss = &spapr->icp->ss[cs->cpu_index];
+
+ args[0] = ss->xirr;
+ args[1] = ss->mfrr;
+
+ return H_SUCCESS;
+}
+
static void rtas_set_xive(PowerPCCPU *cpu, sPAPREnvironment *spapr,
uint32_t token,
uint32_t nargs, target_ulong args,
@@ -842,6 +854,7 @@ static void xics_realize(DeviceState *dev, Error **errp)
spapr_register_hypercall(H_IPI, h_ipi);
spapr_register_hypercall(H_XIRR, h_xirr);
spapr_register_hypercall(H_EOI, h_eoi);
+ spapr_register_hypercall(H_IPOLL, h_ipoll);
object_property_set_bool(OBJECT(icp->ics), true, "realized", &error);
if (error) {
--
1.8.1.4
