From eb7fd4d0f64fcab2da9ae454a1f214174e881372 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 19 Jun 2018 15:41:39 +0200 Subject: [PATCH] nvdimm: convert nvdimm_mr into a pointer This way we can easily check if the region has already been inititalized without having to rely on the size of an uninitialized region being 0. Free the region in nvdimm_finalize() and not in unrealize() as we will allow to create the region before realization in following patches. Reviewed-by: David Gibson Reviewed-by: Igor Mammedov Signed-off-by: David Hildenbrand Message-Id: <20180619134141.29478-11-david@redhat.com> Signed-off-by: Paolo Bonzini --- hw/mem/nvdimm.c | 17 +++++++++++++---- include/hw/mem/nvdimm.h | 2 +- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c index 7260c9c6b1..afd3912d6b 100644 --- a/hw/mem/nvdimm.c +++ b/hw/mem/nvdimm.c @@ -43,7 +43,7 @@ static void nvdimm_set_label_size(Object *obj, Visitor *v, const char *name, Error *local_err = NULL; uint64_t value; - if (memory_region_size(&nvdimm->nvdimm_mr)) { + if (nvdimm->nvdimm_mr) { error_setg(&local_err, "cannot change property value"); goto out; } @@ -71,11 +71,18 @@ static void nvdimm_init(Object *obj) NULL, NULL); } +static void nvdimm_finalize(Object *obj) +{ + NVDIMMDevice *nvdimm = NVDIMM(obj); + + g_free(nvdimm->nvdimm_mr); +} + static MemoryRegion *nvdimm_get_memory_region(PCDIMMDevice *dimm, Error **errp) { NVDIMMDevice *nvdimm = NVDIMM(dimm); - return &nvdimm->nvdimm_mr; + return nvdimm->nvdimm_mr; } static void nvdimm_realize(PCDIMMDevice *dimm, Error **errp) @@ -102,9 +109,10 @@ static void nvdimm_realize(PCDIMMDevice *dimm, Error **errp) return; } - memory_region_init_alias(&nvdimm->nvdimm_mr, OBJECT(dimm), + nvdimm->nvdimm_mr = g_new(MemoryRegion, 1); + memory_region_init_alias(nvdimm->nvdimm_mr, OBJECT(dimm), "nvdimm-memory", mr, 0, pmem_size); - nvdimm->nvdimm_mr.align = align; + nvdimm->nvdimm_mr->align = align; } /* @@ -167,6 +175,7 @@ static TypeInfo nvdimm_info = { .class_init = nvdimm_class_init, .instance_size = sizeof(NVDIMMDevice), .instance_init = nvdimm_init, + .instance_finalize = nvdimm_finalize, }; static void nvdimm_register_types(void) diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h index 9340631cfc..c5c9b3c7f8 100644 --- a/include/hw/mem/nvdimm.h +++ b/include/hw/mem/nvdimm.h @@ -74,7 +74,7 @@ struct NVDIMMDevice { * it's the PMEM region in NVDIMM device, which is presented to * guest via ACPI NFIT and _FIT method if NVDIMM hotplug is supported. */ - MemoryRegion nvdimm_mr; + MemoryRegion *nvdimm_mr; /* * The 'on' value results in the unarmed flag set in ACPI NFIT, -- 2.30.2