[Bug 1995860] Re: Emulation of fence.tso hangs in endless loop

[Heinrich Schuchardt]

Submitted to Debian as bug #1023616.

** Bug watch added: Debian Bug tracker #1023616
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023616

** Also affects: opensbi (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023616
   Importance: Unknown
       Status: Unknown

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Title:
  Emulation of fence.tso hangs in endless loop

Status in opensbi package in Ubuntu:
  Fix Committed
Status in u-boot package in Ubuntu:
  New
Status in u-boot-nezha package in Ubuntu:
  New
Status in opensbi package in Debian:
  Unknown

Bug description:
  OpenSBI 1.1 has added an emulation of the fence.tso instruction
  missing on the Allwinner D1 SOC. This emulation hangs in an endless
  loop. This is fixed by the following upstream patch:

  111afc12306e ("lib: sbi_illegal_insn: Fix FENCE.TSO emulation infinite
  trap loop")

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