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| 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 /hw/intc/xics_kvm.c | |
| parent | 2a886794f1969020845d0085a41a884e01b357df (diff) | |
| download | qemu-4ffb7496881ec361deaf1f51c41a933bde3cbf7b.zip qemu-4ffb7496881ec361deaf1f51c41a933bde3cbf7b.tar.gz qemu-4ffb7496881ec361deaf1f51c41a933bde3cbf7b.tar.bz2 | |
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 'hw/intc/xics_kvm.c')
| -rw-r--r-- | hw/intc/xics_kvm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c index 954c424..a1f1b7b 100644 --- a/hw/intc/xics_kvm.c +++ b/hw/intc/xics_kvm.c @@ -342,7 +342,8 @@ void ics_kvm_set_irq(ICSState *ics, int srcno, int val) } } -int xics_kvm_connect(SpaprInterruptController *intc, Error **errp) +int xics_kvm_connect(SpaprInterruptController *intc, uint32_t nr_servers, + Error **errp) { ICSState *ics = ICS_SPAPR(intc); int rc; |