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s390x/virtio-ccw: wire up irq routing and irqfds

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Make use of the new s390 adapter irq routing support to enable real
in-kernel irqfds for virtio-ccw with adapter interrupts.

Note that s390 doesn't provide the common KVM_CAP_IRQCHIP capability, but
rather needs KVM_CAP_S390_IRQCHIP to be enabled. This is to ensure backward
compatibility.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Cornelia Huck 2013-07-15 17:45:03 +02:00
parent 7bca3892cb
commit d426d9fba8
11 changed files with 329 additions and 18 deletions
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23
include/hw/s390x/adapter.h Normal file
View file

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/*
* s390 adapter definitions
*
* Copyright 2013,2014 IBM Corp.
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef S390X_ADAPTER_H
#define S390X_ADAPTER_H
struct AdapterInfo {
uint64_t ind_addr;
uint64_t summary_addr;
uint64_t ind_offset;
uint32_t summary_offset;
uint32_t adapter_id;
};
#endif