Richard W.M. Jones ac1cb3cd7c lib/qemu.c: Add -cpu max when testing for KVM via QMP
On RHEL 10.2 aarch64 (only) we see:

  $ echo '{ "execute": "qmp_capabilities" }' '{ "execute": "query-kvm" }' '{ "execute": "quit" }'  | QEMU_AUDIO_DRV=none "/usr/libexec/qemu-kvm" -display none -machine "virt,accel=kvm:hvf:tcg" -qmp stdio
  qemu-kvm: invalid accelerator hvf
  qemu-kvm: falling back to KVM
  {"QMP": {"version": {"qemu": {"micro": 0, "minor": 1, "major": 9}, "package": "qemu-kvm-9.1.0-15.el10_0.4"}, "capabilities": ["oob"]}}
  qemu-kvm: warning: CPU model cortex-a57-arm-cpu is deprecated -- use 'host' / 'max'
  qemu-kvm: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invalid argument

Unfortunately we cannot use guestfs_int_get_cpu_model (as that
requires us to already know if KVM is supported), so we just have to
guess that -cpu max will work, at least enough for QMP to work.

Fixes: https://issues.redhat.com/browse/RHEL-121076
Reported-by: Xiang Hua Chen
2025-10-17 09:57:14 +01:00
2025-05-10 18:29:40 +01:00
2025-02-16 17:00:46 +00:00
2025-02-16 17:00:46 +00:00
2025-09-09 16:29:13 +01:00
2025-02-16 17:00:46 +00:00
2025-02-16 17:00:46 +00:00
2025-02-16 16:57:43 +00:00
2025-02-16 17:00:46 +00:00
2025-09-30 10:06:44 +01:00
2025-09-30 10:06:44 +01:00
2025-02-16 17:00:46 +00:00
2025-02-16 17:00:46 +00:00
2018-02-22 15:06:13 +00:00
2021-04-08 11:36:40 +01:00
2023-11-16 10:38:59 +00:00
2025-03-22 12:41:39 +00:00
2020-01-14 16:21:22 +01:00
2025-09-30 10:06:44 +01:00
2019-11-13 12:49:55 +00:00
2025-02-16 17:00:46 +00:00
2025-02-16 17:00:46 +00:00

Libguestfs is tools and a library for accessing and modifying guest
disk images.  For more information see the home page:

  http://libguestfs.org/

For discussion, development, patches, etc. please use the mailing
list:

  https://lists.libguestfs.org

To find out how to build libguestfs from source, read:

  docs/guestfs-building.pod
  http://libguestfs.org/guestfs-building.1.html
  man docs/guestfs-building.1

Copyright (C) 2009-2025 Red Hat Inc.

The library is distributed under the LGPLv2+.  The programs are
distributed under the GPLv2+.  Please see the files COPYING and
COPYING.LIB for full license information.  The examples are under a
very liberal license.
Languages
C 42.7%
OCaml 35.5%
Shell 7.1%
Makefile 4%
Perl 2.6%
Other 8%