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cpu: Introduce CPU model deprecation API

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Implement the ability of marking some versions deprecated. When
that CPU model is chosen, print a warning.  The warning message
can be customized, e.g. suggesting an alternative CPU model to be
used instead.

The deprecation message will be printed by x86_cpu_list_entry(),
e.g. '-cpu help'.

QMP command 'query-cpu-definitions' will return a bool value
indicating the deprecation status.

Signed-off-by: Robert Hoo <robert.hu@linux.intel.com>
Message-Id: <1600758855-80046-1-git-send-email-robert.hu@linux.intel.com>
[ehabkost: reword commit message]
[ehabkost: Handle NULL cpu_type]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Robert Hoo 2020-09-22 15:14:14 +08:00 • committed by Eduardo Habkost
parent 31c707fb4d
commit 61ad65d0f0
4 changed files with 27 additions and 3 deletions
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7
qapi/machine-target.json
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@ -286,6 +286,10 @@
# in the VM configuration, because aliases may stop being
# migration-safe in the future (since 4.1)
#
# @deprecated: If true, this CPU model is deprecated and may be removed in
# in some future version of QEMU according to the QEMU deprecation
# policy. (since 5.2)
#
# @unavailable-features is a list of QOM property names that
# represent CPU model attributes that prevent the CPU from running.
# If the QOM property is read-only, that means there's no known
@ -310,7 +314,8 @@
'static': 'bool',
'*unavailable-features': [ 'str' ],
'typename': 'str',
'*alias-of' : 'str' },
'*alias-of' : 'str',
'deprecated' : 'bool' },
'if': 'defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_I386) || defined(TARGET_S390X) || defined(TARGET_MIPS)' }
##