linux-toradex.git/include/linux/kvm_host.h, branch v2.6.34

KVM: Increase NR_IOBUS_DEVS limit to 200

2010-04-20T10:08:30+00:00

This patch increases the current hardcoded limit of NR_IOBUS_DEVS
from 6 to 200. We are hitting this limit when creating a guest with more
than 1 virtio-net device using vhost-net backend. Each virtio-net
device requires 2 such devices to service notifications from rx/tx queues.

Signed-off-by: Sridhar Samudrala 
Signed-off-by: Avi Kivity

KVM: fix the handling of dirty bitmaps to avoid overflows

2010-04-20T10:06:55+00:00

Int is not long enough to store the size of a dirty bitmap.

This patch fixes this problem with the introduction of a wrapper
function to calculate the sizes of dirty bitmaps.

Note: in mark_page_dirty(), we have to consider the fact that
  __set_bit() takes the offset as int, not long.

Signed-off-by: Takuya Yoshikawa 
Signed-off-by: Marcelo Tosatti

KVM: Convert kvm->requests_lock to raw_spinlock_t

2010-03-01T15:36:13+00:00

The code relies on kvm->requests_lock inhibiting preemption.

Noted by Jan Kiszka.

Signed-off-by: Avi Kivity

KVM: Introduce kvm_host_page_size

2010-03-01T15:36:08+00:00

This patch introduces a generic function to find out the
host page size for a given gfn. This function is needed by
the kvm iommu code. This patch also simplifies the x86
host_mapping_level function.

Signed-off-by: Joerg Roedel 
Signed-off-by: Avi Kivity

KVM: enable PCI multiple-segments for pass-through device

2010-03-01T15:36:06+00:00

Enable optional parameter (default 0) - PCI segment (or domain) besides
BDF, when assigning PCI device to guest.

Signed-off-by: Zhai Edwin 
Acked-by: Chris Wright 
Signed-off-by: Marcelo Tosatti

KVM: Lazify fpu activation and deactivation

2010-03-01T15:35:50+00:00

Defer fpu deactivation as much as possible - if the guest fpu is loaded, keep
it loaded until the next heavyweight exit (where we are forced to unload it).
This reduces unnecessary exits.

We also defer fpu activation on clts; while clts signals the intent to use the
fpu, we can't be sure the guest will actually use it.

Signed-off-by: Avi Kivity

KVM: convert slots_lock to a mutex

2010-03-01T15:35:45+00:00

Signed-off-by: Marcelo Tosatti

KVM: switch vcpu context to use SRCU

2010-03-01T15:35:45+00:00

Signed-off-by: Marcelo Tosatti

KVM: convert io_bus to SRCU

2010-03-01T15:35:45+00:00

Signed-off-by: Marcelo Tosatti

KVM: x86: switch kvm_set_memory_alias to SRCU update

2010-03-01T15:35:45+00:00

Using a similar two-step procedure as for memslots.

Signed-off-by: Marcelo Tosatti