Alex Williamson f0736cf055 KVM: Restrict non-existing slot state transitions ...

The API documentation states:

	When changing an existing slot, it may be moved in the guest
	physical memory space, or its flags may be modified.

An "existing slot" requires a non-zero npages (memory_size).  The only
transition we should therefore allow for a non-existing slot should be
to create the slot, which includes setting a non-zero memory_size.  We
currently allow calls to modify non-existing slots, which is pointless,
confusing, and possibly wrong.

With this we know that the invalidation path of __kvm_set_memory_region
is always for a delete or move and never for adding a zero size slot.

Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

2012-12-13 23:21:50 -02:00

..

assigned-dev.c

kvm: deliver msi interrupts from irq handler

2012-12-05 15:10:53 +02:00

async_pf.c

KVM: do not release the error page

2012-08-06 16:04:58 +03:00

async_pf.h

KVM: Halt vcpu if page it tries to access is swapped out

2011-01-12 11:21:39 +02:00

coalesced_mmio.c

KVM: make checks stricter in coalesced_mmio_in_range()

2011-12-27 11:17:07 +02:00

coalesced_mmio.h

KVM: Make coalesced mmio use a device per zone

2011-09-25 19:17:57 +03:00

eventfd.c

kvm: Fix irqfd resampler list walk

2012-12-10 18:16:36 -02:00

ioapic.c

KVM: x86: drop parameter validation in ioapic/pic

2012-08-14 22:35:22 -03:00

ioapic.h

KVM: fix race with level interrupts

2012-07-20 16:12:00 -03:00

iodev.h

KVM: remove in_range from io devices

2009-09-10 08:33:05 +03:00

iommu.c

KVM: do not treat noslot pfn as a error pfn

2012-10-29 20:31:04 -02:00

irq_comm.c

kvm: add kvm_set_irq_inatomic

2012-12-05 15:10:45 +02:00

Kconfig

KVM: Add config to support ple or cpu relax optimzation

2012-07-23 13:00:53 +03:00

kvm_main.c

KVM: Restrict non-existing slot state transitions

2012-12-13 23:21:50 -02:00