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| author | Cédric Le Goater <clg@kaod.org> | 2018-12-09 20:45:57 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2018-12-21 09:37:38 +1100 |
| commit | 0cddee8d488667a7de60e75f76ead8cffe613d75 (patch) | |
| tree | 1a289e06d34799ed2c81fb217d347df3e3490887 /scripts/tracetool/backend/syslog.py | |
| parent | 3aa597f6505b4d7b62a1b77ab95a233dd5c7c5f0 (diff) | |
| download | focaccia-qemu-0cddee8d488667a7de60e75f76ead8cffe613d75.tar.gz focaccia-qemu-0cddee8d488667a7de60e75f76ead8cffe613d75.zip | |
spapr/xive: use the VCPU id as a NVT identifier
The IVPE scans the O/S CAM line of the XIVE thread interrupt contexts to find a matching Notification Virtual Target (NVT) among the NVTs dispatched on the HW processor threads. On a real system, the thread interrupt contexts are updated by the hypervisor when a Virtual Processor is scheduled to run on a HW thread. Under QEMU, the model will emulate the same behavior by hardwiring the NVT identifier in the thread context registers at reset. The NVT identifier used by the sPAPRXive model is the VCPU id. The END identifier is also derived from the VCPU id. A set of helpers doing the conversion between identifiers are provided for the hcalls configuring the sources and the ENDs. The model does not need a NVT table but the XiveRouter NVT operations are provided to perform some extra checks in the routing algorithm. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'scripts/tracetool/backend/syslog.py')
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