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spapr: remove the 'nr_servers' field from the machine 

xics_system_init() does not need 'nr_servers' anymore as it is only
used to define the 'interrupt-controller' node in the device tree. So
let's just compute the value when calling spapr_dt_xics().

This also gives us an opportunity to simplify the xics_system_init()
routine and introduce a specific spapr_ics_create() helper to create
the sPAPR ICS object.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2017-04-05 08:37:44 +02:00 committed by David Gibson
parent b88290cd9e
commit 71cd4dace9
2 changed files with 24 additions and 33 deletions
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56
hw/ppc/spapr.c
View File

@ -97,45 +97,40 @@
#define HTAB_SIZE(spapr) (1ULL << ((spapr)->htab_shift))
static int try_create_xics(sPAPRMachineState *spapr, const char *type_ics,
const char *type_icp, int nr_servers,
int nr_irqs, Error **errp)
static ICSState *spapr_ics_create(sPAPRMachineState *spapr,
const char *type_ics,
int nr_irqs, Error **errp)
{
XICSFabric *xi = XICS_FABRIC(spapr);
Error *err = NULL, *local_err = NULL;
ICSState *ics = NULL;
Object *obj;
ics = ICS_SIMPLE(object_new(type_ics));
object_property_add_child(OBJECT(spapr), "ics", OBJECT(ics), NULL);
object_property_set_int(OBJECT(ics), nr_irqs, "nr-irqs", &err);
object_property_add_const_link(OBJECT(ics), "xics", OBJECT(xi), NULL);
object_property_set_bool(OBJECT(ics), true, "realized", &local_err);
obj = object_new(type_ics);
object_property_add_child(OBJECT(spapr), "ics", obj, NULL);
object_property_add_const_link(obj, "xics", OBJECT(spapr), &error_abort);
object_property_set_int(obj, nr_irqs, "nr-irqs", &err);
object_property_set_bool(obj, true, "realized", &local_err);
error_propagate(&err, local_err);
if (err) {
error_propagate(errp, err);
return -1;
return NULL;
}
spapr->nr_servers = nr_servers;
spapr->ics = ics;
spapr->icp_type = type_icp;
return 0;
return ICS_SIMPLE(obj);
}
static int xics_system_init(MachineState *machine,
int nr_servers, int nr_irqs, Error **errp)
static void xics_system_init(MachineState *machine, int nr_irqs, Error **errp)
{
int rc = -1;
sPAPRMachineState *spapr = SPAPR_MACHINE(machine);
if (kvm_enabled()) {
Error *err = NULL;
if (machine_kernel_irqchip_allowed(machine) &&
!xics_kvm_init(SPAPR_MACHINE(machine), errp)) {
rc = try_create_xics(SPAPR_MACHINE(machine), TYPE_ICS_KVM,
TYPE_KVM_ICP, nr_servers, nr_irqs, &err);
!xics_kvm_init(spapr, errp)) {
spapr->icp_type = TYPE_KVM_ICP;
spapr->ics = spapr_ics_create(spapr, TYPE_ICS_KVM, nr_irqs, &err);
}
if (machine_kernel_irqchip_required(machine) && rc < 0) {
if (machine_kernel_irqchip_required(machine) && !spapr->ics) {
error_reportf_err(err,
"kernel_irqchip requested but unavailable: ");
} else {
@ -143,13 +138,11 @@ static int xics_system_init(MachineState *machine,
}
}
if (rc < 0) {
xics_spapr_init(SPAPR_MACHINE(machine), errp);
rc = try_create_xics(SPAPR_MACHINE(machine), TYPE_ICS_SIMPLE,
TYPE_ICP, nr_servers, nr_irqs, errp);
if (!spapr->ics) {
xics_spapr_init(spapr, errp);
spapr->icp_type = TYPE_ICP;
spapr->ics = spapr_ics_create(spapr, TYPE_ICS_SIMPLE, nr_irqs, errp);
}
return rc;
}
static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
@ -977,6 +970,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
void *fdt;
sPAPRPHBState *phb;
char *buf;
int smt = kvmppc_smt_threads();
fdt = g_malloc0(FDT_MAX_SIZE);
_FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE)));
@ -1016,7 +1010,7 @@ static void *spapr_build_fdt(sPAPRMachineState *spapr,
_FDT(fdt_setprop_cell(fdt, 0, "#size-cells", 2));
/* /interrupt controller */
spapr_dt_xics(spapr->nr_servers, fdt, PHANDLE_XICP);
spapr_dt_xics(DIV_ROUND_UP(max_cpus * smt, smp_threads), fdt, PHANDLE_XICP);
ret = spapr_populate_memory(spapr, fdt);
if (ret < 0) {
@ -2045,7 +2039,6 @@ static void ppc_spapr_init(MachineState *machine)
hwaddr node0_size = spapr_node0_size();
long load_limit, fw_size;
char *filename;
int smt = kvmppc_smt_threads();
msi_nonbroken = true;
@ -2096,8 +2089,7 @@ static void ppc_spapr_init(MachineState *machine)
load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
/* Set up Interrupt Controller before we create the VCPUs */
xics_system_init(machine, DIV_ROUND_UP(max_cpus * smt, smp_threads),
XICS_IRQS_SPAPR, &error_fatal);
xics_system_init(machine, XICS_IRQS_SPAPR, &error_fatal);
/* Set up containers for ibm,client-set-architecture negotiated options */
spapr->ov5 = spapr_ovec_new();

1
include/hw/ppc/spapr.h
View File

@ -108,7 +108,6 @@ struct sPAPRMachineState {
char *kvm_type;
MemoryHotplugState hotplug_memory;
uint32_t nr_servers;
const char *icp_type;
};