* Question for CXL Drivers and ACPI required for a CXL mem device?
@ 2021-06-22 17:37 samarth saxena
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From: samarth saxena @ 2021-06-22 17:37 UTC (permalink / raw)
To: linux-kernel
Hi All,
I am trying to bring up a system with a CXL Type 3 device using Qemu.
I see that the device is visible in the operating system at the location:
/dev/cxl/mem0
And a persistent memory attached to the device at
/sys/bus/cxl/devices/mem0/pmem
But I am unable to understand how to use this memory (pmem).
How can the Linux map this Pmem instance to user space.
Also, CXL device can be a non persistent memory too. How will that be visible?
Which all drivers are necessary to use a CXL Type3 device as a memory
expander? Is there any ongoing development in the kernel?
Regards,
Samarth
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