linux.git/virt/kvm/iodev.h, branch master

KVM: move iodev.h from virt/kvm/ to include/kvm

2015-03-26T21:43:12+00:00

iodev.h contains definitions for the kvm_io_bus framework. This is
needed both by the generic KVM code in virt/kvm as well as by
architecture specific code under arch/. Putting the header file in
virt/kvm and using local includes in the architecture part seems at
least dodgy to me, so let's move the file into include/kvm, so that a
more natural "#include " can be used by all of the code.
This also solves a problem later when using struct kvm_io_device
in arm_vgic.h.
Fixing up the FSF address in the GPL header and a wrong include path
on the way.

Signed-off-by: Andre Przywara 
Acked-by: Christoffer Dall 
Reviewed-by: Marc Zyngier 
Reviewed-by: Marcelo Tosatti 
Signed-off-by: Marc Zyngier

KVM: Redesign kvm_io_bus_ API to pass VCPU structure to the callbacks.

2015-03-26T21:43:11+00:00

This is needed in e.g. ARM vGIC emulation, where the MMIO handling
depends on the VCPU that does the access.

Signed-off-by: Nikolay Nikolaev 
Signed-off-by: Andre Przywara 
Acked-by: Paolo Bonzini 
Acked-by: Christoffer Dall 
Reviewed-by: Marc Zyngier 
Signed-off-by: Marc Zyngier

KVM: remove in_range from io devices

2009-09-10T05:33:05+00:00

This changes bus accesses to use high-level kvm_io_bus_read/kvm_io_bus_write
functions. in_range now becomes unused so it is removed from device ops in
favor of read/write callbacks performing range checks internally.

This allows aliasing (mostly for in-kernel virtio), as well as better error
handling by making it possible to pass errors up to userspace.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Avi Kivity

KVM: document locking for kvm_io_device_ops

2009-09-10T05:33:04+00:00

slots_lock is taken everywhere when device ops are called.
Document this as we will use this to rework locking for io.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Avi Kivity

KVM: cleanup io_device code

2009-09-10T05:32:45+00:00

We modernize the io_device code so that we use container_of() instead of
dev->private, and move the vtable to a separate ops structure
(theoretically allows better caching for multiple instances of the same
ops structure)

Signed-off-by: Gregory Haskins 
Acked-by: Chris Wright 
Signed-off-by: Avi Kivity

KVM: kvm_io_device: extend in_range() to manage len and write attribute

2008-07-20T09:42:30+00:00

Modify member in_range() of structure kvm_io_device to pass length and the type
of the I/O (write or read).

This modification allows to use kvm_io_device with coalesced MMIO.

Signed-off-by: Laurent Vivier 
Signed-off-by: Avi Kivity

KVM: Move drivers/kvm/* to virt/kvm/

2008-01-30T16:01:18+00:00

Signed-off-by: Avi Kivity