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lib/qemu.c: Use machine type none when inspecting QMP properties

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Dan mentioned that there is a special machine type ("none") we can use
when querying for KVM.  It has no CPU, memory, etc and does not run,
but you can still enable KVM for it.

Note we have to remove the -cpu parameter, otherwise qemu prints this
error:

  qemu-kvm: apic-id property was not initialized properly

Updates: commit 5da8102f5f
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Richard W.M. Jones
2026-01-26 14:30:46 +00:00
parent 8dc104c2f0
commit f7a24b2ea8
1 changed files with 1 additions and 7 deletions
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8
lib/qemu.c
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@@ -81,13 +81,7 @@ generic_qmp_test (guestfs_h *g, const char *qmp_command, char **outp)
guestfs_int_cmd_add_string_unquoted (cmd, "QEMU_AUDIO_DRV=none "); guestfs_int_cmd_add_string_unquoted (cmd, "QEMU_AUDIO_DRV=none ");
guestfs_int_cmd_add_string_quoted (cmd, g->hv); guestfs_int_cmd_add_string_quoted (cmd, g->hv);
guestfs_int_cmd_add_string_unquoted (cmd, " -display none"); guestfs_int_cmd_add_string_unquoted (cmd, " -display none");
guestfs_int_cmd_add_string_unquoted (cmd, " -cpu max"); guestfs_int_cmd_add_string_unquoted (cmd, " -machine none,accel=kvm:hvf:tcg");
guestfs_int_cmd_add_string_unquoted (cmd, " -machine ");
guestfs_int_cmd_add_string_quoted (cmd,
#ifdef MACHINE_TYPE
MACHINE_TYPE ","
#endif
"accel=kvm:hvf:tcg");
guestfs_int_cmd_add_string_unquoted (cmd, " -qmp stdio"); guestfs_int_cmd_add_string_unquoted (cmd, " -qmp stdio");
guestfs_int_cmd_add_string_unquoted (cmd, " -S"); guestfs_int_cmd_add_string_unquoted (cmd, " -S");
guestfs_int_cmd_clear_capture_errors (cmd); guestfs_int_cmd_clear_capture_errors (cmd);