Currently the ivshmem device is built whenever both PCI and KVM support are
included. This patch gives it its own config option to allow easier
customization of whether to include it. It's enabled by default in the
same circumstances as now - when both PCI and KVM are available.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-Id: <1425017077-18487-4-git-send-email-david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
I am using qemu for teaching the Linux kernel at our university. I
wrote a simple PCI device that can answer to writes/reads, generate
interrupts and perform DMA. As I am dragging it locally over 2 years,
I am sending it to you now.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
[Fix 32-bit compilation. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is done in preparation for the addition of VFIO platform
device support.
Signed-off-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Depending on the device, container->space->as contains the valid AddressSpace.
Using address_space_memory breaks devices sitting behind an iommu (and using
a separate address space).
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This patch removes all DPRINTF and replace them by trace points.
A few DPRINTF used in error cases were transformed into error_report.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Use the kvm_resamplefds_enabled function
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Replace all the fprintf(stderr, ...) calls with error_report.
Also make sure exit() consistently uses the error code 1. A few calls
used -1. While at it cleanup some indentation in the printf argument
lists.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fix OOB access via malformed incoming_posn parameters
and check that requested memory is actually alloc'ed.
Signed-off-by: Sebastian Krahmer <krahmer@suse.de>
[AF: Rebased, cleanups, avoid fd leak]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Check incoming_posn to avoid out-of-bounds array accesses if the ivshmem
server on the host sends invalid values.
Cc: Cam Macdonell <cam@cs.ualberta.ca>
Reported-by: Sebastian Krahmer <krahmer@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[AF: Tighten upper bound check for posn in close_guest_eventfds()]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The third argument to the fd_read() callback implemented by
ivshmem_read() is the number of bytes, not a flags field. Fix this and
check we received enough bytes before accessing the buffer pointer.
Cc: Cam Macdonell <cam@cs.ualberta.ca>
Reported-by: Sebastian Krahmer <krahmer@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[AF: Handle partial reads via FIFO]
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The PCI MMIO might be disabled or the device in the reset state.
Make sure we do not dump these memory regions.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This looks like an old merge error and should have no effect.
(Build tested only)
Found by Coccinelle using Julia Lawall's script:
https://lkml.org/lkml/2014/8/23/128
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 1414055855-6688-1-git-send-email-dgilbert@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On this way, we can assure the new bootindex take effect
during vm rebooting.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Remove bootindex form qdev property to qom, things will
continue to work just fine, and we can use qom features
which are not supported by qdev property.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
All memory regions used by VFIO are LITTLE_ENDIAN and they
already take care of endiannes when accessing real device BARs
except ROM - it was broken on BE hosts.
This fixes endiannes for ROM BARs the same way as it is done
for other BARs.
This has been tested on PPC64 BE/LE host/guest in all possible
combinations including TCG.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
[aik: added commit log]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This reverts commit c40708176a.
The resulting code wrongly assumed target and host endianness are
the same which is not always the case for PPC64.
[aw: or potentially any host supporting VFIO and TCG]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Mac OS X calibrates a number of frequencies on bootup based on reading
tb values on bootup and comparing them to via cuda timer values.
The only variable we can really steer well (thanks to KVM) is the cuda
frequency. So let's use that one to fake Mac OS X into believing the
bus frequency is tbfreq * 4. That way Mac OS X will automatically
calculate the correct timebase frequency.
With this patch and the patch set I posted earlier I can successfully
run Mac OS X 10.2, 10.3 and 10.4 guests with -M mac99 on TCG and KVM.
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
There is a special timer in the mac99 machine that we recently started
to emulate. Unfortunately we emulated it in the wrong frequency.
This patch adapts the frequency Mac OS X uses to evaluate results from
this timer, making calculations it bases off of it work.
Signed-off-by: Alexander Graf <agraf@suse.de>
If we make use of OVMF for the BIOS then we can use GPUs without VGA
space access, but we still need this quirk. Disassociate it from the
x-vga option and enable it on all NVIDIA VGA display class devices.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Memory changes for QOMification and automatic tracking of MR lifetime.
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
SCSI changes that enable sending vendor-specific commands via virtio-scsi.
Memory changes for QOMification and automatic tracking of MR lifetime.
# gpg: Signature made Mon 18 Aug 2014 13:03:09 BST using RSA key ID 9B4D86F2
# gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: aka "Paolo Bonzini <bonzini@gnu.org>"
* remotes/bonzini/tags/for-upstream:
mtree: remove write-only field
memory: Use canonical path component as the name
memory: Use memory_region_name for name access
memory: constify memory_region_name
exec: Abstract away ref to memory region names
loader: Abstract away ref to memory region names
tpm_tis: remove instance_finalize callback
memory: remove memory_region_destroy
memory: convert memory_region_destroy to object_unparent
ioport: split deletion and destruction
nic: do not destroy memory regions in cleanup functions
vga: do not dynamically allocate chain4_alias
sysbus: remove unused function sysbus_del_io
qom: object: move unparenting to the child property's release callback
qom: object: delete properties before calling instance_finalize
virtio-scsi: implement parse_cdb
scsi-block, scsi-generic: implement parse_cdb
scsi-block: extract scsi_block_is_passthrough
scsi-bus: introduce parse_cdb in SCSIDeviceClass and SCSIBusInfo
scsi-bus: prepare scsi_req_new for introduction of parse_cdb
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The function is empty after the previous patch, so remove it.
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Explicitly call object_unparent in the few places where we
will re-create the memory region. If the memory region is
simply being destroyed as part of device teardown, let QOM
handle it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The function fstat() may fail, so check its return value.
Acked-by: Levente Kurusa <lkurusa@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
ivsmem_offset was removed, however this debug statement was not updated.
Modify the statement to fit the new mechanic.
Signed-off-by: Levente Kurusa <lkurusa@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit 40509f7f added a test to avoid updating KVM MSI routes when the
MSIMessage is unchanged and f4d45d47 switched to relying on this
rather than doing our own comparison. Our cached msg is effectively
unused now. Remove it.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
When new MSI-X vectors are enabled we need to disable MSI-X and
re-enable it with the correct number of vectors. That means we need
to reprogram the eventfd triggers for each vector. Prior to f4d45d47
vector->use tracked whether a vector was masked or unmasked and we
could always pick the KVM path when available for unmasked vectors.
Now vfio doesn't track mask state itself and vector->use and virq
remains configured even for masked vectors. Therefore we need to ask
the MSI-X code whether a vector is masked in order to select the
correct signaling path. As noted in the comment, MSI relies on
hardware to handle masking.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org # QEMU 2.1
The VMStateDescription for the imx_ccm device was missing its
terminator. Found by static search of the codebase using
a regex based on one suggested by Ian Jackson:
pcregrep -rMi '(?s)VMStateField(?:(?!END_OF_LIST).)*?;' $(git grep -l 'VMStateField\[\]')
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
The permission of TCE entry should exclude physical base address.
Otherwise, unmapping TCE entry can be interpreted to mapping TCE
entry wrongly for VFIO devices.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Replace qemu_allocate_irqs(foo, bar, 1)[0]
with qemu_allocate_irq(foo, bar, 0).
This avoids leaking the dereferenced qemu_irq *.
Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
[PC Changes:
* Applied change to instance in sh4/sh7750.c
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Kirill Batuzov <batuzovk@ispras.ru>
[AF: Fix IRQ index in sh4/sh7750.c]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
io-error is for block device errors; it should always be preceded
by a BLOCK_IO_ERROR event. I think vfio wants to use
RUN_STATE_INTERNAL_ERROR instead.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Slow BAR access path is used when VFIO fails to mmap() BAR.
Since this is just a transport between the guest and a device, there is
no need to do endianness swapping.
This changes BARs to use native endianness. Since non-ROM BARs were
doing byte swapping, we need to remove it so does the patch.
As the result, this eliminates cancelling byte swaps and there is
no change in behavior for non-ROM BARs.
ROM BARs were declared little endian too but byte swapping was not
implemented for them so they never actually worked on big endian systems
as there was no cancelling byte swap. This fixes endiannes for ROM BARs
by declaring them native endian and only fixing access sizes as it is
done for non-ROM BARs.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
There are still old guests out there that over-exercise MSI-X masking.
The current code completely sets-up and tears-down an MSI-X vector on
the "use" and "release" callbacks. While this is functional, it can
slow an old guest to a crawl. We can easily skip the KVM parts of
this so that we keep the MSI route and irqfd setup. We do however
need to switch VFIO to trigger a different eventfd while masked.
Actually, we have the option of continuing to use -1 to disable the
trigger, but by using another EventNotifier we can allow the MSI-X
core to emulate pending bits and re-fire the vector once unmasked.
MSI code gets updated as well to use the same setup and teardown
structures and functions.
Prior to this change, an igbvf assigned to a RHEL5 guest gets about
20Mbps and 50 transactions/s with netperf (remote or VF->PF). With
this change, we get line rate and 3k transactions/s remote or 2Gbps
and 6k+ transactions/s to the PF. No significant change is expected
for newer guests with more well behaved MSI-X support.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This turns the sPAPR support on and enables VFIO container use
in the kernel.
This extends vfio_connect_container to support VFIO_SPAPR_TCE_IOMMU type
in the host kernel.
This registers a memory listener which sPAPR IOMMU will notify when
executing H_PUT_TCE/etc DMA calls. The listener then will notify the host
kernel about DMA map/unmap operation via VFIO_IOMMU_MAP_DMA/
VFIO_IOMMU_UNMAP_DMA ioctls.
This executes VFIO_IOMMU_ENABLE ioctl to make sure that the IOMMU is free
of mappings and can be exclusively given to the user. At the moment SPAPR
is the only platform requiring this call to be implemented.
Note that the host kernel function implementing VFIO_IOMMU_DISABLE
is called automatically when container's fd is closed so there is
no need to call it explicitly from QEMU. We may need to call
VFIO_IOMMU_DISABLE explicitly in the future for some sort of dynamic
reconfiguration (PCI hotplug or dynamic IOMMU group management).
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
While most operations with VFIO IOMMU driver are generic and used inside
vfio.c, there are still some operations which only specific VFIO IOMMU
drivers implement. The first example of it will be reading a DMA window
start from the host.
This adds a helper which passes an ioctl request to the container's fd.
The helper will check if @req is known. For this, stub is added. This return
-1 on any requests for now.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
'monitor.h' is still included in target-s390x/kvm.c, since I have
no good way to verify whether other code need it on my x86 host.
Signed-off-by: Wenchao Xia <wenchaoqemu@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
The timer registers on our KeyLargo macio emulation are read as byte reversed
from the big endian guest, so we better expose them endian reversed as well.
This fixes initial hickups of booting Mac OS X with -M mac99 for me.
Signed-off-by: Alexander Graf <agraf@suse.de>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
The macio IDE controller has some pretty nasty magic in its implementation to
allow for unaligned sector accesses. We used to handle these accesses
synchronously inside the IO callback handler.
However, the block infrastructure changed below our feet and now it's impossible
to call a synchronous block read/write from the aio callback handler of a
previous block access.
Work around that limitation by making the unaligned handling bits also go
through our asynchronous handler.
This fixes booting Mac OS X for me.
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This patch uses the new IOMMU notifiers to allow VFIO pass through devices
to work with guest side IOMMUs, as long as the host-side VFIO iommu has
sufficient capability and granularity to match the guest side. This works
by tracking all map and unmap operations on the guest IOMMU using the
notifiers, and mirroring them into VFIO.
There are a number of FIXMEs, and the scheme involves rather more notifier
structures than I'd like, but it should make for a reasonable proof of
concept.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
So far, VFIO has a notion of different logical DMA address spaces, but
only ever uses one (system memory). This patch extends this, creating
new VFIOAddressSpace objects as necessary, according to the AddressSpace
reported by the PCI subsystem for this device's DMAs.
This isn't enough yet to support guest side IOMMUs with VFIO, but it does
mean we could now support VFIO devices on, for example, a guest side PCI
host bridge which maps system memory at somewhere other than 0 in PCI
space.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
The only model so far supported for VFIO passthrough devices is the model
usually used on x86, where all of the guest's RAM is mapped into the
(host) IOMMU and there is no IOMMU visible in the guest.
This patch begins to relax this model, introducing the notion of a
VFIOAddressSpace. This represents a logical DMA address space which will
be visible to one or more VFIO devices by appropriate mapping in the (host)
IOMMU. Thus the currently global list of containers becomes local to
a VFIOAddressSpace, and we verify that we don't attempt to add a VFIO
group to multiple address spaces.
For now, only one VFIOAddressSpace is created and used, corresponding to
main system memory, that will change in future patches.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This reworks vfio_connect_container() and vfio_get_group() to have
common exit path at the end of the function bodies.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Upcoming VFIO on SPAPR PPC64 support will initialize the IOMMU
memory region with UINT64_MAX (2^64 bytes) size so int128_get64()
will assert.
The patch takes care of this check. The existing type1 IOMMU code
is not expected to map all 64 bits of RAM so the patch does not
touch that part.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This device is ridiculous. It has two MMIO BARs, BAR4 and BAR2. BAR4
hosts the MSI-X table, so oviously it would be too easy to access it
directly, instead it creates a window register in BAR2 that, among
other things, provides access to the MSI-X table. This means MSI-X
doesn't work in the guest because the driver actually manages to
program the physical table. When interrupt remapping is present, the
device MSI will be blocked. The Linux driver doesn't make use of this
window, so apparently it's not required to make use of MSI-X. This
quirk makes the device work with the Windows driver that does use this
window for MSI-X, but I certainly cannot recommend this device for
assignment (the Windows 7 driver also constantly pokes PCI config
space).
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20140515' into staging
migration/next for 20140515
# gpg: Signature made Thu 15 May 2014 02:32:25 BST using RSA key ID 5872D723
# gpg: Can't check signature: public key not found
* remotes/juanquintela/tags/migration/20140515:
usb: fix up post load checks
migration: show average throughput when migration finishes
savevm: Remove all the unneeded version_minimum_id_old (rest)
savevm: Remove all the unneeded version_minimum_id_old (usb)
Split ram_save_block
arch_init: Simplify code for load_xbzrle()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
After previous Peter patch, they are redundant. This way we don't
assign them except when needed. Once there, there were lots of case
where the ".fields" indentation was wrong:
.fields = (VMStateField []) {
and
.fields = (VMStateField []) {
Change all the combinations to:
.fields = (VMStateField[]){
The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
