diff options
| author | Greg Kurz <groug@kaod.org> | 2019-06-13 18:45:05 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-07-02 09:43:58 +1000 |
| commit | 7abc0c6d35306a41a48eda7ab2b7b2d51f32f86b (patch) | |
| tree | 439604b99e2dbb8b21870775b35a79af91fd7fa3 /include/hw | |
| parent | d9293c4843b2503c905d35899077fc415824783e (diff) | |
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 'include/hw')
| -rw-r--r-- | include/hw/ppc/xics_spapr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/ppc/xics_spapr.h b/include/hw/ppc/xics_spapr.h index 6c1d9ee559..d968f2499c 100644 --- a/include/hw/ppc/xics_spapr.h +++ b/include/hw/ppc/xics_spapr.h @@ -35,6 +35,7 @@ void spapr_dt_xics(SpaprMachineState *spapr, uint32_t nr_servers, void *fdt, uint32_t phandle); int xics_kvm_init(SpaprMachineState *spapr, Error **errp); void xics_kvm_disconnect(SpaprMachineState *spapr, Error **errp); +bool xics_kvm_has_broken_disconnect(SpaprMachineState *spapr); void xics_spapr_init(SpaprMachineState *spapr); void xics_spapr_connect(SpaprMachineState *spapr); |