diff options
| -rw-r--r-- | hw/intc/spapr_xive_kvm.c | 29 | ||||
| -rw-r--r-- | hw/intc/xics_kvm.c | 31 | ||||
| -rw-r--r-- | hw/intc/xive.c | 4 | ||||
| -rw-r--r-- | hw/ppc/spapr_irq.c | 58 | ||||
| -rw-r--r-- | include/hw/ppc/xive.h | 1 |
5 files changed, 97 insertions, 26 deletions
diff --git a/hw/intc/spapr_xive_kvm.c b/hw/intc/spapr_xive_kvm.c index 078d18d775..ec170b3045 100644 --- a/hw/intc/spapr_xive_kvm.c +++ b/hw/intc/spapr_xive_kvm.c @@ -246,7 +246,7 @@ void kvmppc_xive_source_reset_one(XiveSource *xsrc, int srcno, Error **errp) true, errp); } -void kvmppc_xive_source_reset(XiveSource *xsrc, Error **errp) +static void kvmppc_xive_source_reset(XiveSource *xsrc, Error **errp) { int i; @@ -697,6 +697,15 @@ void kvmppc_xive_connect(SpaprXive *xive, Error **errp) Error *local_err = NULL; size_t esb_len = (1ull << xsrc->esb_shift) * xsrc->nr_irqs; size_t tima_len = 4ull << TM_SHIFT; + CPUState *cs; + + /* + * The KVM XIVE device already in use. This is the case when + * rebooting under the XIVE-only interrupt mode. + */ + if (xive->fd != -1) { + return; + } if (!kvmppc_has_cap_xive()) { error_setg(errp, "IRQ_XIVE capability must be present for KVM"); @@ -745,6 +754,24 @@ void kvmppc_xive_connect(SpaprXive *xive, Error **errp) xive->change = qemu_add_vm_change_state_handler( kvmppc_xive_change_state_handler, xive); + /* Connect the presenters to the initial VCPUs of the machine */ + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + + kvmppc_xive_cpu_connect(spapr_cpu_state(cpu)->tctx, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } + + /* Update the KVM sources */ + kvmppc_xive_source_reset(xsrc, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + kvm_kernel_irqchip = true; kvm_msi_via_irqfd_allowed = true; kvm_gsi_direct_mapping = true; diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c index 12bd5190cf..5ba5b77561 100644 --- a/hw/intc/xics_kvm.c +++ b/hw/intc/xics_kvm.c @@ -33,6 +33,7 @@ #include "trace.h" #include "sysemu/kvm.h" #include "hw/ppc/spapr.h" +#include "hw/ppc/spapr_cpu_core.h" #include "hw/ppc/xics.h" #include "hw/ppc/xics_spapr.h" #include "kvm_ppc.h" @@ -342,6 +343,16 @@ static void rtas_dummy(PowerPCCPU *cpu, SpaprMachineState *spapr, int xics_kvm_init(SpaprMachineState *spapr, Error **errp) { int rc; + CPUState *cs; + Error *local_err = NULL; + + /* + * The KVM XICS device already in use. This is the case when + * rebooting under the XICS-only interrupt mode. + */ + if (kernel_xics_fd != -1) { + return 0; + } if (!kvm_enabled() || !kvm_check_extension(kvm_state, KVM_CAP_IRQ_XICS)) { error_setg(errp, @@ -390,6 +401,26 @@ int xics_kvm_init(SpaprMachineState *spapr, Error **errp) kvm_msi_via_irqfd_allowed = true; kvm_gsi_direct_mapping = true; + /* Create the presenters */ + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + + icp_kvm_realize(DEVICE(spapr_cpu_state(cpu)->icp), &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto fail; + } + } + + /* Update the KVM sources */ + ics_set_kvm_state(spapr->ics); + + /* Connect the presenters to the initial VCPUs of the machine */ + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + icp_set_kvm_state(spapr_cpu_state(cpu)->icp); + } + return 0; fail: diff --git a/hw/intc/xive.c b/hw/intc/xive.c index b5ebb33527..0c74e47aa4 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -993,10 +993,6 @@ static void xive_source_reset(void *dev) /* PQs are initialized to 0b01 (Q=1) which corresponds to "ints off" */ memset(xsrc->status, XIVE_ESB_OFF, xsrc->nr_irqs); - - if (kvm_irqchip_in_kernel()) { - kvmppc_xive_source_reset(xsrc, &error_fatal); - } } static void xive_source_realize(DeviceState *dev, Error **errp) diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c index d1e87577fb..3156daf093 100644 --- a/hw/ppc/spapr_irq.c +++ b/hw/ppc/spapr_irq.c @@ -102,12 +102,6 @@ static void spapr_irq_init_xics(SpaprMachineState *spapr, int nr_irqs, Object *obj; Error *local_err = NULL; - spapr_irq_init_device(spapr, &spapr_irq_xics, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - obj = object_new(TYPE_ICS_SIMPLE); object_property_add_child(OBJECT(spapr), "ics", obj, &error_abort); object_property_add_const_link(obj, ICS_PROP_XICS, OBJECT(spapr), @@ -226,7 +220,13 @@ static void spapr_irq_set_irq_xics(void *opaque, int srcno, int val) static void spapr_irq_reset_xics(SpaprMachineState *spapr, Error **errp) { - /* TODO: create the KVM XICS device */ + Error *local_err = NULL; + + spapr_irq_init_device(spapr, &spapr_irq_xics, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } } static const char *spapr_irq_get_nodename_xics(SpaprMachineState *spapr) @@ -279,7 +279,6 @@ static void spapr_irq_init_xive(SpaprMachineState *spapr, int nr_irqs, uint32_t nr_servers = spapr_max_server_number(spapr); DeviceState *dev; int i; - Error *local_err = NULL; dev = qdev_create(NULL, TYPE_SPAPR_XIVE); qdev_prop_set_uint32(dev, "nr-irqs", nr_irqs); @@ -297,12 +296,6 @@ static void spapr_irq_init_xive(SpaprMachineState *spapr, int nr_irqs, } spapr_xive_hcall_init(spapr); - - spapr_irq_init_device(spapr, &spapr_irq_xive, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } } static int spapr_irq_claim_xive(SpaprMachineState *spapr, int irq, bool lsi, @@ -382,6 +375,7 @@ static int spapr_irq_post_load_xive(SpaprMachineState *spapr, int version_id) static void spapr_irq_reset_xive(SpaprMachineState *spapr, Error **errp) { CPUState *cs; + Error *local_err = NULL; CPU_FOREACH(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); @@ -390,6 +384,12 @@ static void spapr_irq_reset_xive(SpaprMachineState *spapr, Error **errp) spapr_xive_set_tctx_os_cam(spapr_cpu_state(cpu)->tctx); } + spapr_irq_init_device(spapr, &spapr_irq_xive, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + /* Activate the XIVE MMIOs */ spapr_xive_mmio_set_enabled(spapr->xive, true); } @@ -472,14 +472,8 @@ static SpaprIrq *spapr_irq_current(SpaprMachineState *spapr) static void spapr_irq_init_dual(SpaprMachineState *spapr, int nr_irqs, Error **errp) { - MachineState *machine = MACHINE(spapr); Error *local_err = NULL; - if (kvm_enabled() && machine_kernel_irqchip_allowed(machine)) { - error_setg(errp, "No KVM support for the 'dual' machine"); - return; - } - spapr_irq_xics.init(spapr, spapr_irq_xics.nr_irqs, &local_err); if (local_err) { error_propagate(errp, local_err); @@ -558,6 +552,9 @@ static int spapr_irq_post_load_dual(SpaprMachineState *spapr, int version_id) * defaults to XICS at startup. */ if (spapr_ovec_test(spapr->ov5_cas, OV5_XIVE_EXPLOIT)) { + if (kvm_irqchip_in_kernel()) { + xics_kvm_disconnect(spapr, &error_fatal); + } spapr_irq_xive.reset(spapr, &error_fatal); } @@ -566,12 +563,30 @@ static int spapr_irq_post_load_dual(SpaprMachineState *spapr, int version_id) static void spapr_irq_reset_dual(SpaprMachineState *spapr, Error **errp) { + Error *local_err = NULL; + /* * Deactivate the XIVE MMIOs. The XIVE backend will reenable them * if selected. */ spapr_xive_mmio_set_enabled(spapr->xive, false); + /* Destroy all KVM devices */ + if (kvm_irqchip_in_kernel()) { + xics_kvm_disconnect(spapr, &local_err); + if (local_err) { + error_propagate(errp, local_err); + error_prepend(errp, "KVM XICS disconnect failed: "); + return; + } + kvmppc_xive_disconnect(spapr->xive, &local_err); + if (local_err) { + error_propagate(errp, local_err); + error_prepend(errp, "KVM XIVE disconnect failed: "); + return; + } + } + spapr_irq_current(spapr)->reset(spapr, errp); } @@ -809,6 +824,9 @@ SpaprIrq spapr_irq_xics_legacy = { .dt_populate = spapr_dt_xics, .cpu_intc_create = spapr_irq_cpu_intc_create_xics, .post_load = spapr_irq_post_load_xics, + .reset = spapr_irq_reset_xics, .set_irq = spapr_irq_set_irq_xics, .get_nodename = spapr_irq_get_nodename_xics, + .init_emu = spapr_irq_init_emu_xics, + .init_kvm = spapr_irq_init_kvm_xics, }; diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h index edb8937f17..d872f96d1a 100644 --- a/include/hw/ppc/xive.h +++ b/include/hw/ppc/xive.h @@ -432,7 +432,6 @@ static inline uint32_t xive_nvt_cam_line(uint8_t nvt_blk, uint32_t nvt_idx) */ void kvmppc_xive_source_reset_one(XiveSource *xsrc, int srcno, Error **errp); -void kvmppc_xive_source_reset(XiveSource *xsrc, Error **errp); void kvmppc_xive_source_set_irq(void *opaque, int srcno, int val); void kvmppc_xive_cpu_connect(XiveTCTX *tctx, Error **errp); void kvmppc_xive_cpu_synchronize_state(XiveTCTX *tctx, Error **errp); |