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| author | Greg Kurz | 2019-06-13 18:45:05 +0200 |
|---|---|---|
| committer | David Gibson | 2019-07-02 01:43:58 +0200 |
| commit | 7abc0c6d35306a41a48eda7ab2b7b2d51f32f86b (patch) | |
| tree | 439604b99e2dbb8b21870775b35a79af91fd7fa3 /accel | |
| parent | xics/spapr: Register RTAS/hypercalls once at machine init (diff) | |
| download | qemu-7abc0c6d35306a41a48eda7ab2b7b2d51f32f86b.tar.gz qemu-7abc0c6d35306a41a48eda7ab2b7b2d51f32f86b.tar.xz qemu-7abc0c6d35306a41a48eda7ab2b7b2d51f32f86b.zip | |
xics/spapr: Detect old KVM XICS on POWER9 hosts
Older KVMs on POWER9 don't support destroying/recreating a KVM XICS
device, which is required by 'dual' interrupt controller mode. This
causes QEMU to emit a warning when the guest is rebooted and to fall
back on XICS emulation:
qemu-system-ppc64: warning: kernel_irqchip allowed but unavailable:
Error on KVM_CREATE_DEVICE for XICS: File exists
If kernel irqchip is required, QEMU will thus exit when the guest is
first rebooted. Failing QEMU this late may be a painful experience
for the user.
Detect that and exit at machine init instead.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156044430517.125694.6207865998817342638.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'accel')
0 files changed, 0 insertions, 0 deletions