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Re: [Qemu-devel] [PATCH 2/2] pc-dimm: remove realize callback
From: |
Wei Yang |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] pc-dimm: remove realize callback |
Date: |
Tue, 19 Feb 2019 13:05:41 +0000 |
User-agent: |
NeoMutt/20170113 (1.7.2) |
On Tue, Feb 19, 2019 at 01:36:57PM +0100, Philippe Mathieu-Daudé wrote:
>On 2/19/19 7:07 AM, Wei Yang wrote:
>> PCDIMM's realize callback is introduced to do proper setup for NVDIMM.
>>
>> Currently the NVDIMM setup task is nvdimm_prepare_memory_region(), which
>> is done in pre_plug stage. This means related task has already been done
>> at realize point.
>>
>> This patch remove PCDIMM realize callback.
>>
>> Signed-off-by: Wei Yang <address@hidden>
>> ---
>> hw/acpi/memory_hotplug.c | 1 -
>> hw/mem/nvdimm.c | 11 -----------
>> hw/mem/pc-dimm.c | 5 -----
>> include/hw/mem/pc-dimm.h | 3 ---
>> 4 files changed, 20 deletions(-)
>>
>> diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
>> index b19673d337..cb5284d36f 100644
>> --- a/hw/acpi/memory_hotplug.c
>> +++ b/hw/acpi/memory_hotplug.c
>> @@ -264,7 +264,6 @@ void acpi_memory_plug_cb(HotplugHandler *hotplug_dev,
>> MemHotplugState *mem_st,
>> DeviceState *dev, Error **errp)
>> {
>> MemStatus *mdev;
>> - DeviceClass *dc = DEVICE_GET_CLASS(dev);
>
>OK now I see the leftover of patch #1.
>
Ah, I should move this in patch #1.
Thanks.
>>
>> mdev = acpi_memory_slot_status(mem_st, dev, errp);
>> if (!mdev) {
>> diff --git a/hw/mem/nvdimm.c b/hw/mem/nvdimm.c
>> index bf2adf5e16..8f69576926 100644
>> --- a/hw/mem/nvdimm.c
>> +++ b/hw/mem/nvdimm.c
>> @@ -136,15 +136,6 @@ static MemoryRegion
>> *nvdimm_md_get_memory_region(MemoryDeviceState *md,
>> return nvdimm->nvdimm_mr;
>> }
>>
>> -static void nvdimm_realize(PCDIMMDevice *dimm, Error **errp)
>> -{
>> - NVDIMMDevice *nvdimm = NVDIMM(dimm);
>> -
>> - if (!nvdimm->nvdimm_mr) {
>> - nvdimm_prepare_memory_region(nvdimm, errp);
>> - }
>> -}
>> -
>> /*
>> * the caller should check the input parameters before calling
>> * label read/write functions.
>> @@ -192,12 +183,10 @@ static Property nvdimm_properties[] = {
>>
>> static void nvdimm_class_init(ObjectClass *oc, void *data)
>> {
>> - PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc);
>> MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(oc);
>> NVDIMMClass *nvc = NVDIMM_CLASS(oc);
>> DeviceClass *dc = DEVICE_CLASS(oc);
>>
>> - ddc->realize = nvdimm_realize;
>> mdc->get_memory_region = nvdimm_md_get_memory_region;
>> dc->props = nvdimm_properties;
>>
>
>I'd split your patch in 2:
>- the previous part, cleaning NVDIMM,
>- the part below, doing "git revert 9f318f8f7e6" and improving the
>commit description.
>
Sounds reasonable. Let me split this into two.
>> diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
>> index 152400b1fc..5832c0ba92 100644
>> --- a/hw/mem/pc-dimm.c
>> +++ b/hw/mem/pc-dimm.c
>> @@ -159,7 +159,6 @@ static void pc_dimm_init(Object *obj)
>> static void pc_dimm_realize(DeviceState *dev, Error **errp)
>> {
>> PCDIMMDevice *dimm = PC_DIMM(dev);
>> - PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
>>
>> if (!dimm->hostmem) {
>> error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
>> @@ -178,10 +177,6 @@ static void pc_dimm_realize(DeviceState *dev, Error
>> **errp)
>> return;
>> }
>>
>> - if (ddc->realize) {
>> - ddc->realize(dimm, errp);
>> - }
>> -
>> host_memory_backend_set_mapped(dimm->hostmem, true);
>> }
>>
>> diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h
>> index 01436b9f50..d18f8246b7 100644
>> --- a/include/hw/mem/pc-dimm.h
>> +++ b/include/hw/mem/pc-dimm.h
>> @@ -59,8 +59,6 @@ typedef struct PCDIMMDevice {
>>
>> /**
>> * PCDIMMDeviceClass:
>> - * @realize: called after common dimm is realized so that the dimm based
>> - * devices get the chance to do specified operations.
>> * @get_vmstate_memory_region: returns #MemoryRegion which indicates the
>> * memory of @dimm should be kept during live migration. Will not fail
>> * after the device was realized.
>> @@ -70,7 +68,6 @@ typedef struct PCDIMMDeviceClass {
>> DeviceClass parent_class;
>>
>> /* public */
>> - void (*realize)(PCDIMMDevice *dimm, Error **errp);
>> MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm,
>> Error **errp);
>> } PCDIMMDeviceClass;
>>
--
Wei Yang
Help you, Help me