Hi: I am trying to debug an issue related to my private built kernel's (4.11 from upstream with ACPI/NFIT/NVDIMM enabled) interaction with a persistent memory device's type. We have a way to emulate a software based NVDIMM device into a guest, which is running my private built kernel. When the host set this emulated NVDIMM device as Reserved type, I was able to see a pmem0 block device exposed and everything seems to function correctly.however, when it's exposed as a Persistent Memory type, the kernel does not boot and it has a black screen and no usefully logging could help root cause this. My questions are: 1. Is this a known issue for 4.11? 2. Is there any patches NIFT/NVDIMM beyond 4.11 that's needed to get Persistent Memory type supported? 3. In this case, is there anyway to debug this further?
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