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authorShivaprasad G Bhat <sbhat@linux.ibm.com>2020-02-09 22:56:31 -0600
committerDavid Gibson <david@gibson.dropbear.id.au>2020-02-21 09:15:04 +1100
commitee3a71e36654317b14ede0290e87628f8b79f850 (patch)
treec42f6057545d006d23cae4b25aa66c9f16eb6a4c /hw/mem
parent6c5627bb24dcd68c997857a8b671617333b1289f (diff)
spapr: Add NVDIMM device support
Add support for NVDIMM devices for sPAPR. Piggyback on existing nvdimm device interface in QEMU to support virtual NVDIMM devices for Power. Create the required DT entries for the device (some entries have dummy values right now). The patch creates the required DT node and sends a hotplug interrupt to the guest. Guest is expected to undertake the normal DR resource add path in response and start issuing PAPR SCM hcalls. The device support is verified based on the machine version unlike x86. This is how it can be used .. Ex : For coldplug, the device to be added in qemu command line as shown below -object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm0,share=yes,size=1073872896 -device nvdimm,label-size=128k,uuid=75a3cdd7-6a2f-4791-8d15-fe0a920e8e9e,memdev=memnvdimm0,id=nvdimm0,slot=0 For hotplug, the device to be added from monitor as below object_add memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm0,share=yes,size=1073872896 device_add nvdimm,label-size=128k,uuid=75a3cdd7-6a2f-4791-8d15-fe0a920e8e9e,memdev=memnvdimm0,id=nvdimm0,slot=0 Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Signed-off-by: Bharata B Rao <bharata@linux.ibm.com> [Early implementation] Message-Id: <158131058078.2897.12767731856697459923.stgit@lep8c.aus.stglabs.ibm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/mem')
-rw-r--r--hw/mem/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/mem/Kconfig b/hw/mem/Kconfig
index 620fd4cb59..2ad052a536 100644
--- a/hw/mem/Kconfig
+++ b/hw/mem/Kconfig
@@ -8,4 +8,4 @@ config MEM_DEVICE
config NVDIMM
bool
default y
- depends on PC
+ depends on (PC || PSERIES)