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| author |  Andre Przywara <andre.przywara@arm.com>
| 2016-07-15 12:43:26 +0100 |
|---|---|---|
| committer |  Marc Zyngier <marc.zyngier@arm.com>
| 2016-07-18 18:10:40 +0100 |
| commit | 8a39d00670f0792c1186e442e1dd28fe0326f2ee (patch) | |
| tree | 8c480a938d0eea48c798c2ddeaa08c2e83d5a047 /include | |
| parent | KVM: arm/arm64: Extend arch CAP checks to allow per-VM capabilities (diff) | |
| download | linux-8a39d00670f0792c1186e442e1dd28fe0326f2ee.tar.gz linux-8a39d00670f0792c1186e442e1dd28fe0326f2ee.tar.bz2 linux-8a39d00670f0792c1186e442e1dd28fe0326f2ee.zip | |
KVM: kvm_io_bus: Add kvm_io_bus_get_dev() call
The kvm_io_bus framework is a nice place of holding information about
various MMIO regions for kernel emulated devices.
Add a call to retrieve the kvm_io_device structure which is associated
with a certain MMIO address. This avoids to duplicate kvm_io_bus'
knowledge of MMIO regions without having to fake MMIO calls if a user
needs the device a certain MMIO address belongs to.
This will be used by the ITS emulation to get the associated ITS device
when someone triggers an MSI via an ioctl from userspace.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 0640ee92b978..614a98137c5f 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -164,6 +164,8 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, struct kvm_io_device *dev); int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, struct kvm_io_device *dev); +struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, + gpa_t addr); #ifdef CONFIG_KVM_ASYNC_PF struct kvm_async_pf { |