linux-toradex.git/virt/kvm, branch v2.6.27.21

KVM: Synchronize guest physical memory map to host virtual memory map

2008-07-29T09:33:53+00:00

Synchronize changes to host virtual addresses which are part of
a KVM memory slot to the KVM shadow mmu.  This allows pte operations
like swapping, page migration, and madvise() to transparently work
with KVM.

Signed-off-by: Andrea Arcangeli 
Signed-off-by: Avi Kivity

KVM: Allow browsing memslots with mmu_lock

2008-07-29T09:33:50+00:00

This allows reading memslots with only the mmu_lock hold for mmu
notifiers that runs in atomic context and with mmu_lock held.

Signed-off-by: Andrea Arcangeli 
Signed-off-by: Avi Kivity

flag parameters: anon_inode_getfd extension

2008-07-24T17:47:27+00:00

This patch just extends the anon_inode_getfd interface to take an additional
parameter with a flag value.  The flag value is passed on to
get_unused_fd_flags in anticipation for a use with the O_CLOEXEC flag.

No actual semantic changes here, the changed callers all pass 0 for now.

[akpm@linux-foundation.org: KVM fix]
Signed-off-by: Ulrich Drepper 
Acked-by: Davide Libenzi 
Cc: Michael Kerrisk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

KVM: Adjust smp_call_function_mask() callers to new requirements

2008-07-20T11:29:54+00:00

smp_call_function_mask() now complains when called in a preemptible context;
adjust its callers accordingly.

Signed-off-by: Avi Kivity

KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction

2008-07-20T09:42:40+00:00

Flush the shadow mmu before removing regions to avoid stale entries.

Signed-off-by: Marcelo Tosatti 
Signed-off-by: Avi Kivity

KVM: s390: dont allocate dirty bitmap

2008-07-20T09:42:36+00:00

This patch #ifdefs the bitmap array for dirty tracking. We don't have dirty
tracking on s390 today, and we'd love to use our storage keys to store the
dirty information for migration. Therefore, we won't need this array at all,
and due to our limited amount of vmalloc space this limits the amount of guests
we can run.

Signed-off-by: Carsten Otte 
Signed-off-by: Avi Kivity

KVM: Support mixed endian machines

2008-07-20T09:42:32+00:00

Currently kvmtrace is not portable. This will prevent from copying a
trace file from big-endian target to little-endian workstation for analysis.
In the patch, kernel outputs metadata containing a magic number to trace
log, and changes 64-bit words to be u64 instead of a pair of u32s.

Signed-off-by: Tan Li 
Acked-by: Jerone Young 
Acked-by: Hollis Blanchard 
Signed-off-by: Avi Kivity

KVM: Add coalesced MMIO support (common part)

2008-07-20T09:42:31+00:00

This patch adds all needed structures to coalesce MMIOs.
Until an architecture uses it, it is not compiled.

Coalesced MMIO introduces two ioctl() to define where are the MMIO zones that
can be coalesced:

- KVM_REGISTER_COALESCED_MMIO registers a coalesced MMIO zone.
  It requests one parameter (struct kvm_coalesced_mmio_zone) which defines
  a memory area where MMIOs can be coalesced until the next switch to
  user space. The maximum number of MMIO zones is KVM_COALESCED_MMIO_ZONE_MAX.

- KVM_UNREGISTER_COALESCED_MMIO cancels all registered zones inside
  the given bounds (bounds are also given by struct kvm_coalesced_mmio_zone).

The userspace client can check kernel coalesced MMIO availability by asking
ioctl(KVM_CHECK_EXTENSION) for the KVM_CAP_COALESCED_MMIO capability.
The ioctl() call to KVM_CAP_COALESCED_MMIO will return 0 if not supported,
or the page offset where will be stored the ring buffer.
The page offset depends on the architecture.

After an ioctl(KVM_RUN), the first page of the KVM memory mapped points to
a kvm_run structure. The offset given by KVM_CAP_COALESCED_MMIO is
an offset to the coalesced MMIO ring expressed in PAGE_SIZE relatively
to the address of the start of th kvm_run structure. The MMIO ring buffer
is defined by the structure kvm_coalesced_mmio_ring.

[akio: fix oops during guest shutdown]

Signed-off-by: Laurent Vivier 
Signed-off-by: Akio Takebe 
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: IOAPIC/LAPIC: Enable NMI support

2008-07-20T09:42:25+00:00

[avi: fix ia64 build breakage]

Signed-off-by: Sheng Yang 
Signed-off-by: Avi Kivity