KVM: PPC: Book3S HV: XIVE: Add a mapping for the source ESB pages
authorCédric Le Goater <clg@kaod.org>
Thu, 18 Apr 2019 10:39:38 +0000 (12:39 +0200)
committerPaul Mackerras <paulus@ozlabs.org>
Tue, 30 Apr 2019 09:35:16 +0000 (19:35 +1000)
commit6520ca64cde71b75dae54f3fcb33517a93d82486
tree878b5eb4c434f2c5bf8fb112770149ecb688452a
parent39e9af3de5ca936098bc80ebe14401426673c208
KVM: PPC: Book3S HV: XIVE: Add a mapping for the source ESB pages

Each source is associated with an Event State Buffer (ESB) with a
even/odd pair of pages which provides commands to manage the source:
to trigger, to EOI, to turn off the source for instance.

The custom VM fault handler will deduce the guest IRQ number from the
offset of the fault, and the ESB page of the associated XIVE interrupt
will be inserted into the VMA using the internal structure caching
information on the interrupts.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Documentation/virtual/kvm/devices/xive.txt
arch/powerpc/include/uapi/asm/kvm.h
arch/powerpc/kvm/book3s_xive_native.c