** Description changed:

+ [ Impact ]
+ 
  I am seeing what looks as a regression in pi-kernel snap for UC20: there
  are around 3.5 additional seconds spent in boot time. In the image from
  cdimage (2021-06-30), I see:
  
  [    1.856540] random: crng init done
  [    1.871798] loop: module loaded
  
  (see https://paste.ubuntu.com/p/CkfWXY5Vgf/)
  while if I build an image from latest snaps in the 20/stable channel, I get:
  
  [    1.855481] random: crng init done
  [    5.349491] loop: module loaded
  
  (see https://paste.ubuntu.com/p/CNt42gdDcZ/)
  The pi-kernel snap revision is 353.
+ 
+ [ Test Case ]
+ 
+ $ sudo dmesg | grep -B1 -A1 'loop: module'
+ [    0.791122] cacheinfo: Unable to detect cache hierarchy for CPU 0
+ [    4.903386] loop: module loaded
+ [    4.906092] spi-bcm2835 fe204000.spi: could not get clk: -517
+ 
+ [ Fix ]
+ 
+ Set CONFIG_BLK_DEV_LOOP_MIN_COUNT to the default value (8).
+ 
+ [ Where Problems Could Occur ]
+ 
+ Loop devices need to be created on-demand if more than 8 are required.
+ If that fails, user space will fail.

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https://bugs.launchpad.net/bugs/1948807

Title:
  Boot time from snap in 20/stable increases boot time on 3.5 seconds

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