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| author | David Gibson <david@gibson.dropbear.id.au> | 2018-06-13 11:57:37 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2018-06-16 16:32:33 +1000 |
| commit | 08304a8689ef726fe1e3f61645a870fb53f67895 (patch) | |
| tree | 9819fdf727d9025fe179fecc7b05388268e25c08 | |
| parent | 937c2146a6694b5bc987c2fa89917db4acc9ae39 (diff) | |
| download | qemu-08304a8689ef726fe1e3f61645a870fb53f67895.zip qemu-08304a8689ef726fe1e3f61645a870fb53f67895.tar.gz qemu-08304a8689ef726fe1e3f61645a870fb53f67895.tar.bz2 | |
pnv_core: Allocate cpu thread objects individually
Currently, we allocate space for all the cpu objects within a single core
in one big block. This was copied from an older version of the spapr code
and requires some ugly pointer manipulation to extract the individual
objects.
This design was due to a misunderstanding of qemu lifetime conventions and
has already been changed in spapr (in 94ad93bd "spapr_cpu_core: instantiate
CPUs separately".
Make an equivalent change in pnv_core to get rid of the nasty pointer
arithmetic.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
| -rw-r--r-- | hw/ppc/pnv.c | 4 | ||||
| -rw-r--r-- | hw/ppc/pnv_core.c | 11 | ||||
| -rw-r--r-- | include/hw/ppc/pnv_core.h | 2 |
3 files changed, 8 insertions, 9 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 0314881..0b9508d 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -121,9 +121,9 @@ static int get_cpus_node(void *fdt) */ static void pnv_dt_core(PnvChip *chip, PnvCore *pc, void *fdt) { - CPUState *cs = CPU(DEVICE(pc->threads)); + PowerPCCPU *cpu = pc->threads[0]; + CPUState *cs = CPU(cpu); DeviceClass *dc = DEVICE_GET_CLASS(cs); - PowerPCCPU *cpu = POWERPC_CPU(cs); int smt_threads = CPU_CORE(pc)->nr_threads; CPUPPCState *env = &cpu->env; PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index 01f47c8..1e40f01 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -151,7 +151,6 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) PnvCore *pc = PNV_CORE(OBJECT(dev)); CPUCore *cc = CPU_CORE(OBJECT(dev)); const char *typename = pnv_core_cpu_typename(pc); - size_t size = object_type_get_instance_size(typename); Error *local_err = NULL; void *obj; int i, j; @@ -165,11 +164,11 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) return; } - pc->threads = g_malloc0(size * cc->nr_threads); + pc->threads = g_new(PowerPCCPU *, cc->nr_threads); for (i = 0; i < cc->nr_threads; i++) { - obj = pc->threads + i * size; + obj = object_new(typename); - object_initialize(obj, size, typename); + pc->threads[i] = POWERPC_CPU(obj); snprintf(name, sizeof(name), "thread[%d]", i); object_property_add_child(OBJECT(pc), name, obj, &error_abort); @@ -179,7 +178,7 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) } for (j = 0; j < cc->nr_threads; j++) { - obj = pc->threads + j * size; + obj = OBJECT(pc->threads[j]); pnv_core_realize_child(obj, XICS_FABRIC(xi), &local_err); if (local_err) { @@ -194,7 +193,7 @@ static void pnv_core_realize(DeviceState *dev, Error **errp) err: while (--i >= 0) { - obj = pc->threads + i * size; + obj = OBJECT(pc->threads[i]); object_unparent(obj); } g_free(pc->threads); diff --git a/include/hw/ppc/pnv_core.h b/include/hw/ppc/pnv_core.h index e337af7..447ae76 100644 --- a/include/hw/ppc/pnv_core.h +++ b/include/hw/ppc/pnv_core.h @@ -34,7 +34,7 @@ typedef struct PnvCore { CPUCore parent_obj; /*< public >*/ - void *threads; + PowerPCCPU **threads; uint32_t pir; MemoryRegion xscom_regs; |