qemu: capabilities: Introduce QEMU_CAPS_MACHINE_HPET capability

The capability represents that qemu accepts the configuration of the
HPET timer via -machine hpet=on/off rather than the
soon-to-be-deprecated '-no-hpet' option.

The capability is detected from 'query-command-line-options' which
recently added the 'hpet' option.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>

src/qemu/qemu_capabilities.c

@@ -680,6 +680,9 @@ VIR_ENUM_IMPL(virQEMUCaps,
               "sgx-epc", /* QEMU_CAPS_SGX_EPC */
               "thread-context", /* QEMU_CAPS_THREAD_CONTEXT */
               "screenshot-format-png", /* QEMU_CAPS_SCREENSHOT_FORMAT_PNG */
+
+              /* 440 */
+              "machine-hpet", /* QEMU_CAPS_MACHINE_HPET */
     );
 
 
@@ -3283,6 +3286,7 @@ struct virQEMUCapsCommandLineProps {
  * features should be used if possible. */
 static struct virQEMUCapsCommandLineProps virQEMUCapsCommandLine[] = {
     { "fsdev", "multidevs", QEMU_CAPS_FSDEV_MULTIDEVS },
+    { "machine", "hpet", QEMU_CAPS_MACHINE_HPET },
     { "sandbox", NULL, QEMU_CAPS_SECCOMP_SANDBOX },
     { "spice", NULL, QEMU_CAPS_SPICE },
     { "spice", "gl", QEMU_CAPS_SPICE_GL },

src/qemu/qemu_capabilities.h

@@ -660,6 +660,9 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_THREAD_CONTEXT, /* -object thread-context */
     QEMU_CAPS_SCREENSHOT_FORMAT_PNG, /* screendump command supports png format */
 
+    /* 440 */
+    QEMU_CAPS_MACHINE_HPET, /* the HPET timer is configured via -machine, rather than -no-hpet */
+
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
 

tests/qemucapabilitiesdata/caps_8.0.0.x86_64.xml

@@ -201,6 +201,7 @@
   <flag name='query-stats-schemas'/>
   <flag name='thread-context'/>
   <flag name='screenshot-format-png'/>
+  <flag name='machine-hpet'/>
   <version>7002050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100244</microcodeVersion>