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machine: Deprecate memory-encryption

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We've had 'confidential-guest-support' for long enough that no one should
be using 'memory-encryption' anymore.

Deprecate 'memory-encryption' by adding notes in docs/about/deprecated.rst
and print a warning when 'memory-encryptio' is used.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://lore.kernel.org/qemu-devel/aMPYkUsytGxLPIM7@redhat.com/
Link: https://lore.kernel.org/r/20260512084458.622465-6-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Xiaoyao Li
2026-05-12 16:44:58 +08:00
committed by Paolo Bonzini
parent 791b5178ed
commit 5cd5188ef8
2 changed files with 9 additions and 0 deletions
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7
docs/about/deprecated.rst
View File

@@ -249,6 +249,13 @@ The RISC-V ``shakti_c`` machine hasn't had meaningful contributions since 2021
and is currently unmaintained. The machine is scheduled to be removed as it
appears to have no users.
``memory-encryption`` machine property (since 11.1)
'''''''''''''''''''''''''''''''''''''''''''''''''''
Use ``confidential-guest-support`` instead. The ``memory-encryption`` object
was an early implementation of memory encryption support in QEMU, but it has
been superseded by the more comprehensive ``confidential-guest-support``
object.
Backend options
---------------

2
hw/core/machine.c
View File

@@ -497,6 +497,8 @@ static void machine_set_memory_encryption(Object *obj, const char *value,
Object *cgs =
object_resolve_path_component(object_get_objects_root(), value);
warn_report("memory-encryption is deprecated, use confidential-guest-support instead");
if (!cgs) {
error_setg(errp, "No such memory encryption object '%s'", value);
return;