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| author | Greg Kurz <groug@kaod.org> | 2019-02-19 18:18:03 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-02-26 09:21:25 +1100 |
| commit | 6cead90c5c9c462c56ddc41a0bd0b4cfef9f62a8 (patch) | |
| tree | d1e5651c0c61339b3d86c61e1c2981a561c4d6bc /include | |
| parent | 09d876ce2c8ea3efd34e02d898c3122e04b814bc (diff) | |
| download | qemu-6cead90c5c9c462c56ddc41a0bd0b4cfef9f62a8.zip qemu-6cead90c5c9c462c56ddc41a0bd0b4cfef9f62a8.tar.gz qemu-6cead90c5c9c462c56ddc41a0bd0b4cfef9f62a8.tar.bz2 | |
xics: Write source state to KVM at claim time
The pseries machine only uses LSIs to support legacy PCI devices. Every
PHB claims 4 LSIs at realize time. When using in-kernel XICS (or upcoming
in-kernel XIVE), QEMU synchronizes the state of all irqs, including these
LSIs, later on at machine reset.
In order to support PHB hotplug, we need a way to tell KVM about the LSIs
that doesn't require a machine reset. An easy way to do that is to always
inform KVM when an interrupt is claimed, which really isn't a performance
path.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <155059668360.1466090.5969630516627776426.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/ppc/xics.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h index d36bbe1..eb65ad7 100644 --- a/include/hw/ppc/xics.h +++ b/include/hw/ppc/xics.h @@ -195,6 +195,7 @@ void icp_synchronize_state(ICPState *icp); void icp_kvm_realize(DeviceState *dev, Error **errp); void ics_get_kvm_state(ICSState *ics); +int ics_set_kvm_state_one(ICSState *ics, int srcno); int ics_set_kvm_state(ICSState *ics); void ics_synchronize_state(ICSState *ics); void ics_kvm_set_irq(ICSState *ics, int srcno, int val); |