[RFC PATCH] docs/system/deprecated: mark ppc64abi32-linux-user for deprecation

[Alex Bennée]

It's buggy and we are not sure anyone uses it.

Cc: David Gibson <david at gibson.dropbear.id.au>
Cc: Richard Henderson <rth at twiddle.net>
Signed-off-by: Alex Bennée <alex.bennee at linaro.org>
---
 docs/system/deprecated.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
index 851dbdeb8ab..11c763383d9 100644
--- a/docs/system/deprecated.rst
+++ b/docs/system/deprecated.rst
@@ -424,6 +424,15 @@ linux-user mode) is deprecated and will be removed in a future version
 of QEMU. Support for this CPU was removed from the upstream Linux
 kernel in 2018, and has also been dropped from glibc.
 
+``ppc64abi32`` CPUs (since 5.2.0)
+'''''''''''''''''''''''''''''''''
+
+The ``ppc64abi32`` architecture has a number of issues which regularly
+trip up our CI testing and is suspected to be quite broken.
+Furthermore the maintainers are unsure what the correct behaviour
+should be and strongly suspect no one actually uses it.
+
+
 Related binaries
 ----------------
 
-- 
2.20.1