diff options
| author | Greg Kurz <groug@kaod.org> | 2019-11-26 17:46:23 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-12-17 10:39:48 +1100 |
| commit | 4ffb7496881ec361deaf1f51c41a933bde3cbf7b (patch) | |
| tree | 0a864924b890d68b53f2da1c72938fd0ed7cc374 /include/hw/ppc/spapr_xive.h | |
| parent | 2a886794f1969020845d0085a41a884e01b357df (diff) | |
spapr: Pass the maximum number of vCPUs to the KVM interrupt controller
The XIVE and XICS-on-XIVE KVM devices on POWER9 hosts can greatly reduce
their consumption of some scarce HW resources, namely Virtual Presenter
identifiers, if they know the maximum number of vCPUs that may run in the
VM.
Prepare ground for this by passing the value down to xics_kvm_connect()
and kvmppc_xive_connect(). This is purely mechanical, no functional
change.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157478678301.67101.2717368060417156338.stgit@bahia.tlslab.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include/hw/ppc/spapr_xive.h')
| -rw-r--r-- | include/hw/ppc/spapr_xive.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h index 742b7e834f..3a103c224d 100644 --- a/include/hw/ppc/spapr_xive.h +++ b/include/hw/ppc/spapr_xive.h @@ -66,7 +66,8 @@ int spapr_xive_end_to_target(uint8_t end_blk, uint32_t end_idx, /* * KVM XIVE device helpers */ -int kvmppc_xive_connect(SpaprInterruptController *intc, Error **errp); +int kvmppc_xive_connect(SpaprInterruptController *intc, uint32_t nr_servers, + Error **errp); void kvmppc_xive_disconnect(SpaprInterruptController *intc); void kvmppc_xive_reset(SpaprXive *xive, Error **errp); void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas, |