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Depending on whether XIVE is emultated or backed with a KVM XIVE device, the ESB MMIOs of a XIVE source point to an I/O memory region or a mapped memory region. This is currently handled by checking kvm_irqchip_in_kernel() returns false in xive_source_realize(). This is a bit awkward as we usually need to do extra things when we're using the in-kernel backend, not less. But most important, we can do better: turn the existing "xive.esb" memory region into a plain container, introduce an "xive.esb-emulated" I/O subregion and rename the existing "xive.esb" subregion in the KVM code to "xive.esb-kvm". Since "xive.esb-kvm" is added with overlap and a higher priority, it prevails over "xive.esb-emulated" (ie. a guest using KVM XIVE will interact with "xive.esb-kvm" instead of the default "xive.esb-emulated" region. While here, consolidate the computation of the MMIO region size in a common helper. Suggested-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <159679992680.876294.7520540158586170894.stgit@bahia.lan> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> |
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| block | ||
| chardev | ||
| crypto | ||
| disas | ||
| exec | ||
| fpu | ||
| hw | ||
| io | ||
| libdecnumber | ||
| migration | ||
| monitor | ||
| net | ||
| qapi | ||
| qemu | ||
| qom | ||
| scsi | ||
| standard-headers | ||
| sysemu | ||
| tcg | ||
| ui | ||
| user | ||
| elf.h | ||
| glib-compat.h | ||
| qemu-common.h | ||
| qemu-io.h | ||
| trace-tcg.h | ||