In some cases, an unplug can cause events to be dropped, which
leads to an assertion failure when preparing to notify the guest
kernel.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There is still a small window that occurs when a cancel I/O affects
an asynchronous I/O operation that hasn't started. In other words,
when the residual data length equals the expected data length.
Today, the routine virtio_scsi_command_complete fails because the
VirtIOSCSIReq pointer (from the hba_private field in SCSIRequest)
was cleared earlier when virtio_scsi_complete_req was called by
the virtio_scsi_request_cancelled routine. As a result, the
virtio_scsi_command_complete routine needs to simply return when
it is processing a SCSIRequest block that was marked canceled.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Some emulated disk operations (MODE SELECT, UNMAP, WRITE SAME)
can trigger asynchronous I/Os. Provide the cancel_io callback
to ensure that AIOCBs are properly cleaned up.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Cc: qemu-stable@nongnu.org
[Tweak commit message. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Synchronize the program counter before the power down helper call
otherwise interrupts will return to the wrong context.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Use fprintf(stderr instead. This removes dependency of libqemuutil.a
on the monitor.
We can further justify this change, in that this code path should only
trigger under a fatal error condition. fprintf-stderr is probably the
appropriate medium as under a fatal error conidition the monitor itself
may be down and out for the count. So assertion failure messages should
go lowest common denominator - straight to stderr.
Fixes the build as reported by Kevin Wolf. Issue debugged and change
suggested by Luiz Capitulino. Issue introduced by
5d24ee70bc.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This patch uses inbound GPIO lines (IRQ and FIR) for
interrupts instead of using the old pic_cpu method,
which doesn't correspond to real hardware.
This creates the CPU's inbound IRQ and FIR GPIO lines and
updates the Microblaze boards to use this new method.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Suggested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reveiwed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Switch the ARMCPUInfo arrays in cpu.c and cpu64.c to use a terminator
entry rather than looping based on ARRAY_SIZE. The latter causes
compile warnings on some versions of gcc if the configure options
happen to result in an empty array.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
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Merge remote-tracking branch 'quintela/tags/migration/20140113' into staging
migration.next for 20140113
# gpg: Signature made Mon 13 Jan 2014 09:38:27 AM PST using RSA key ID 5872D723
# gpg: Can't check signature: public key not found
* quintela/tags/migration/20140113: (49 commits)
migration: synchronize memory bitmap 64bits at a time
ram: split function that synchronizes a range
memory: syncronize kvm bitmap using bitmaps operations
memory: move bitmap synchronization to its own function
kvm: refactor start address calculation
kvm: use directly cpu_physical_memory_* api for tracking dirty pages
memory: unfold memory_region_test_and_clear()
memory: split cpu_physical_memory_* functions to its own include
memory: cpu_physical_memory_set_dirty_tracking() should return void
memory: make cpu_physical_memory_reset_dirty() take a length parameter
memory: s/dirty/clean/ in cpu_physical_memory_is_dirty()
memory: cpu_physical_memory_clear_dirty_range() now uses bitmap operations
memory: cpu_physical_memory_set_dirty_range() now uses bitmap operations
memory: use find_next_bit() to find dirty bits
memory: s/mask/clear/ cpu_physical_memory_mask_dirty_range
memory: cpu_physical_memory_get_dirty() is used as returning a bool
memory: make cpu_physical_memory_get_dirty() the main function
memory: unfold cpu_physical_memory_set_dirty_flag()
memory: unfold cpu_physical_memory_set_dirty() in its only user
memory: unfold cpu_physical_memory_clear_dirty_flag() in its only user
...
Message-id: 1389634834-24181-1-git-send-email-quintela@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
We use the old code if the bitmaps are not aligned
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This function is the only bit where we care about speed.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
If bitmaps are aligned properly, use bitmap operations. If they are
not, just use old bit at a time code.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
We want to have all the functions that handle directly the dirty
bitmap near. We will change it later.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Performance is important in this function, and we want to optimize even further.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
All the functions that use ram_addr_t should be here.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Result was always 0, and not used anywhere. Once there, use bool type
for the parameter.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
We have an end parameter in all the callers, and this make it coherent
with the rest of cpu_physical_memory_* functions, that also take a
length parameter.
Once here, move the start/end calculation to
tlb_reset_dirty_range_all() as we don't need it here anymore.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
All uses except one really want the other meaning.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
We were clearing a range of bits, so use bitmap_clear().
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
We were setting a range of bits, so use bitmap_set().
Note: xen has always been wrong, and should have used start instead
of addr from the beginning.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This operation is way faster than doing it bit by bit.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Now all functions use the same wording that bitops/bitmap operations
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
And make cpu_physical_memory_get_dirty_flag() to use it. It used to
be the other way around.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
After all the previous patches, spliting the bitmap gets direct.
Note: For some reason, I have to move DIRTY_MEMORY_* definitions to
the beginning of memory.h to make compilation work.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
For historical reasons it was bit 3. Once there, create a constant to
know the number of clients.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Document it
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
So remove the flag argument and do it directly. After this change,
there is nothing else using cpu_physical_memory_set_dirty_flags() so
remove it.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
So cpu_physical_memory_get_dirty_flags is not needed anymore
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
So return void.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Move index and size fields from int to long. We need that for
migration. long is 64 bits on sane architectures, and 32bits should
be enough on all the 32bits architectures.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
This will allow unit tests to be written for VMState code without
pulling dependencies from the savevm code.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
