What is this Cannon Lake PCH Shared SRAM?

Steven Friedrich FreeBSD at twc.com
Fri Feb 19 11:29:58 UTC 2021

I searched the Internet, including Intel's site.  

What is the purpose of this memory?

none1 at pci0:0:20:2:      class=0x050000 card=0x72708086 chip=0xa36f8086 
rev=0x10 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Cannon Lake PCH Shared SRAM'
    class      = memory
    subclass   = RAM

FreeBSD FreeBSD 12.2-RELEASE-p3 FreeBSD 12.2-RELEASE-p3 r369283 Special  amd64

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