[Qemu-devel] [PULL 10/10] qapi: deprecate CpuInfoFast.arch

[Markus Armbruster <armbru@redhat.com>]

From: Laszlo Ersek <lersek@redhat.com>

The TARGET_BASE_ARCH values from "configure" don't all map to the
@CpuInfoArch enum constants; in particular "s390x" from the former does
not match @s390 in the latter. Clients are known to rely on the @s390
constant specifically, so we can't change it silently. Instead, deprecate
the @CpuInfoFast.@arch member (in favor of @CpuInfoFast.@target) using the
regular deprecation process.

(No deprecation reminder is added to sysemu_target_to_cpuinfo_arch(): once
@CpuInfoFast.@arch is removed, the assignment expression that calls
sysemu_target_to_cpuinfo_arch() from qmp_query_cpus_fast() will have to
disappear; in turn the static function left without callers will also
break the build, thus it'll have to go.)

Cc: "Daniel P. Berrange" <berrange@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20180427192852.15013-6-lersek@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/misc.json | 8 ++++----
 qemu-doc.texi  | 5 +++++
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/qapi/misc.json b/qapi/misc.json
index fa4eec7b6b..f5988cc0b5 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -558,11 +558,11 @@
 # @props: properties describing to which node/socket/core/thread
 #         virtual CPU belongs to, provided if supported by board
 #
-# @arch: base architecture of the cpu
+# @arch: base architecture of the cpu; deprecated since 2.13.0 in favor
+#        of @target
 #
-# @target: the QEMU system emulation target, which is more specific than
-#          @arch and determines which additional fields will be listed
-#          (since 2.13)
+# @target: the QEMU system emulation target, which determines which
+#          additional fields will be listed (since 2.13)
 #
 # Since: 2.12
 #
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 5813d27615..0ed0f19e6b 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -2949,6 +2949,11 @@ from qcow2 images.
 
 The ``query-cpus'' command is replaced by the ``query-cpus-fast'' command.
 
+@subsection query-cpus-fast "arch" output member (since 2.13.0)
+
+The ``arch'' output member of the ``query-cpus-fast'' command is
+replaced by the ``target'' output member.
+
 @section System emulator devices
 
 @subsection ivshmem (since 2.6.0)
-- 
2.13.6