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Drop the assumption that we're using the main AioContext for Linux
AIO. Convert qemu_aio_set_fd_handler() to aio_set_fd_handler() and
timer_new_ms() to aio_timer_new().
The .bdrv_detach/attach_aio_context() interfaces also need to be
implemented to move the fd and timer from the old to the new AioContext.
Cc: Peter Lieven <pl@kamp.de>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Lieven <pl@kamp.de>
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Drop the assumption that we're using the main AioContext. Use
aio_bh_new() instead of qemu_bh_new().
The .bdrv_detach_aio_context() and .bdrv_attach_aio_context() interfaces
are not needed since no fd handlers, timers, or BHs stay registered when
requests have been drained.
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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The curl block driver uses fd handlers, timers, and BHs. The fd
handlers and timers are managed on behalf of libcurl, which controls
them using callback functions that the block driver implements.
The simplest way to implement .bdrv_detach/attach_aio_context() is to
clean up libcurl in the old event loop and initialize it again in the
new event loop. We do not need to keep track of anything since there
are no pending requests when the AioContext is changed.
Also make sure to use aio_set_fd_handler() instead of
qemu_aio_set_fd_handler() and aio_bh_new() instead of qemu_bh_new() so
the current AioContext is passed in.
Cc: Alexander Graf <agraf@suse.de>
Cc: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
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Drop the assumption that we're using the main AioContext. Convert
qemu_bh_new() to aio_bh_new() and qemu_aio_wait() to aio_poll() so we
use the BlockDriverState's AioContext.
Implement .bdrv_detach/attach_aio_context() interfaces to propagate
detach/attach to BDRVBlkverifyState->test_file. The block layer takes
care of ->file and ->backing_hd but doesn't know about our ->test_file
BlockDriverState, which is also part of the graph.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Drop the assumption that we're using the main AioContext. Convert
qemu_bh_new() to aio_bh_new() so we use the BlockDriverState's
AioContext.
The .bdrv_detach_aio_context() and .bdrv_attach_aio_context() interfaces
are not needed since no fd handlers, timers, or BHs stay registered when
requests have been drained.
Cc: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Up until now all BlockDriverState instances have used the QEMU main loop
for fd handlers, timers, and BHs. This is not scalable on SMP guests
and hosts so we need to move to a model with multiple event loops on
different host CPUs.
bdrv_set_aio_context() assigns the AioContext event loop to use for a
particular BlockDriverState. It first detaches the entire
BlockDriverState graph from the current AioContext and then attaches to
the new AioContext.
This function will be used by virtio-blk data-plane to assign a
BlockDriverState to its IOThread AioContext. Make
bdrv_aio_set_context() public since data-plane should not include
block_int.h.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Modify bdrv_drain_all() to take into account that BlockDriverState
instances may be running in different AioContexts.
This patch changes the implementation of bdrv_drain_all() while
preserving the semantics. Previously kicking throttled requests and
checking for pending requests were done across all BlockDriverState
instances in sequence. Now we process each BlockDriverState in turn,
making sure to acquire and release its AioContext.
This prevents race conditions between the thread executing
bdrv_drain_all() and the thread running the AioContext.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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bdrv_close_all(), bdrv_commit_all(), bdrv_flush_all(),
bdrv_invalidate_cache_all(), and bdrv_clear_incoming_migration_all() are
called by main loop code and touch all BlockDriverState instances.
Some BlockDriverState instances may be running in another AioContext.
Make sure to acquire the AioContext before closing the BlockDriverState.
This will protect against race conditions once virtio-blk data-plane is
using the BlockDriverState from another AioContext event loop.
Note that this patch does not convert bdrv_drain_all() yet since that
conversion is non-trivial.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Drop the assumption that we're using the main AioContext. Convert
qemu_aio_wait() to aio_poll() and qemu_bh_new() to aio_bh_new() so the
BlockDriverState AioContext is used.
Note there is still one qemu_aio_wait() left in bdrv_create() but we do
not have a BlockDriverState there and only main loop code invokes this
function.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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qemu_bh_schedule() is supposed to be thread-safe at least the first time
it is called. Unfortunately this is not quite true:
bh->scheduled = 1;
aio_notify(bh->ctx);
Since another thread may run the BH callback once it has been scheduled,
there is a race condition if the callback frees the BH before
aio_notify(bh->ctx) has a chance to run.
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
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'remotes/awilliam/tags/vfio-pci-for-qemu-20140602.0' into staging
VFIO patches: realtek NIC quirk + SPAPR IOMMU AddressSpace support
# gpg: Signature made Mon 02 Jun 2014 22:44:42 BST using RSA key ID 3BB08B22
# gpg: Can't check signature: public key not found
* remotes/awilliam/tags/vfio-pci-for-qemu-20140602.0:
vfio: Add guest side IOMMU support
vfio: Create VFIOAddressSpace objects as needed
vfio: Introduce VFIO address spaces
vfio: Rework to have error paths
vfio: Fix 128 bit handling
int128: Add int128_exts64()
memory: Sanity check that no listeners remain on a destroyed AddressSpace
vfio-pci: Quirk RTL8168 NIC
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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seabios: update to 1.7.5 final
# gpg: Signature made Mon 02 Jun 2014 15:49:59 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-roms-3:
seabios: update to 1.7.5 final
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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qtest: improve ehci/uhci test
usb: misc fixes, mostly for usb3/xhci
# gpg: Signature made Mon 02 Jun 2014 15:40:34 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-usb-8:
xhci: order superspeed ports first
xhci: make port reset trace point more verbose
usb: add usb_pick_speed
usb-host: add HAVE_STREAMS define
usb-host: allow attaching usb3 devices to ehci
usb: improve ehci/uhci test
usb: move ehci register defines to header file
usb: add uhci port status reserved bit
usb: move uhci register defines to header file
qtest: fix qpci_config_writel
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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sdl2: add support for text consoles
# gpg: Signature made Mon 02 Jun 2014 15:35:20 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-sdl-3:
sdl2: textinput + terminal
sdl2: make Ctrl-Alt-<nr> hotkeys show and hide windows
console: add kbd_put_string_console
console: add kbd_put_qcode_console
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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git shortlog since -rc1:
Gerd Hoffmann (2):
acpi: remove PORT_ACPI_PM_BASE constant
Allow using full io region on q35.
Kevin O'Connor (2):
vgabios: Add debug message if x86emu leal check triggers.
python3 fixes for vgabios and csm builds.
Paolo Bonzini (1):
smm: remove code to handle ACPI disable/enable
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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misc minor vnc patches
# gpg: Signature made Mon 02 Jun 2014 15:31:53 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
* remotes/kraxel/tags/pull-vnc-3:
vnc-enc-tight: Fix divide-by-zero in tight_detect_smooth_image{16,24,32}
vnc: add trace events for key events
vnc: refuse to set a password with VNC_AUTH_NONE
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Spotted by Coverity:
(1) Event assignment: Assigning: "pixels" = "0".
(2) Event cond_true: Condition "y < h", taking true branch
(3) Event cond_false: Condition "x < w", taking false branch
(4) Event loop_end: Reached end of loop
(5) Event divide_by_zero: In expression "(stats[0] + stats[1]) * 100U / pixels",
division by expression "pixels" which may be zero has undefined behavior.
290 DEFINE_DETECT_FUNCTION(16)
291 DEFINE_DETECT_FUNCTION(32)
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Current code silently changes the authentication settings
in case you try to set a password without password authentication
turned on. This is bad. Return an error instead.
If we want allow changing auth settings at runtime this should
be done explicitly using a separate monitor command, not as
side effect of set_passwd.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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We can pick the usb port speed in generic code, by looking at the port
and device speed masks and looking for the fastest match. So add a
function to do exactly that, and drop the speed setting code from
usb_desc_attach as it isn't needed any more.
This way we can set the device speed before calling port->ops->attach,
which fixes some xhci hotplug issues.
https://bugzilla.redhat.com/show_bug.cgi?id=1046873
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Extend compatibility test function to also figure whenever usb3
devices can be supported on ehci. Tweak ep0 maxpacketsize field
due to usb2 <-> usb3 difference.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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* Attach usb devices to the bus.
* Check initial port status register state.
* Flip ehci initialization bit.
* Check port status register state again to
see whenever device handover to ehci worked.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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So we can easily use them in tests.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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So we can easily use them in tests.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Found by Paolo.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Block patches
# gpg: Signature made Mon 02 Jun 2014 14:56:00 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
qemu-img: Report error even with --oformat=json
vmdk: Fix local_err in vmdk_create
block/raw-posix.c: Avoid nonstandard LONG_LONG_MAX
qemu-img: Plug memory leak in convert command
block/sheepdog: Plug memory leak in sd_snapshot_create()
block/vvfat: Plug memory leak in read_directory()
block/vvfat: Plug memory leak in check_directory_consistency()
block/qapi: Plug memory leak in dump_qobject() case QTYPE_QERROR
blockdev: Plug memory leak in drive_init()
blockdev: Plug memory leak in blockdev_init()
qemu-io: Don't print NULL when open without non-option arg fails
qemu-io: Plug memory leak in open command
qemu-io: Support multiple -o in open command
block: Plug memory leak on brv_open_image() error path
qcow2: Plug memory leak on qcow2_invalidate_cache() error paths
block/vvfat: Plug memory leak in enable_write_target()
qemu-img: Plug memory leak on block option help error path
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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This reverts commit 1fba509527beb74bdcf50bc07ad3cd8244ad9c61.
That commit converted various fprintf(stderr, ...) calls to
use error_report(); however none of these bsd-user files include
a header which gives a prototype for error_report, so this
causes compiler warnings. Since these are just straightforward
reporting of command line errors, we should handle these in the
obvious way by printing to stderr, as we do for linux-user.
There's no need to drag in the error-handling framework for this,
especially since user-mode doesn't have the "maybe we need to
send this to the monitor" issues system emulation does.
Acked-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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img_check() should report that the format of the given image does not
support checks even if JSON output is desired. JSON data is output to
stdout, as opposed to error messages, which are (in the case of
qemu-img) printed to stderr. Therefore, it is easy to distinguish
between the two.
Also, img_info() does already use error_report() for human-readable
messages even though JSON output is desired (through
collect_image_info_list()).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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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>
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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>
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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>
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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>
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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>
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This adds macro to extend signed 64bit value to signed 128bit value.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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At the moment, most AddressSpace objects last as long as the guest system
in practice, but that could well change in future. In addition, for VFIO
we will be introducing some private per-AdressSpace information, which must
be disposed of before the AddressSpace itself is destroyed.
To reduce the chances of subtle bugs in this area, this patch adds
asssertions to ensure that when an AddressSpace is destroyed, there are no
remaining MemoryListeners using that AS as a filter.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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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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In vmdk_create and vmdk_create_extent, initialize local_err before using
it, and don't leak it on error.
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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In the MacOSX specific code in raw-posix.c we use the define
LONG_LONG_MAX. This is actually a non-standard pre-C99 define;
switch to using the standard LLONG_MAX instead.
This apparently fixes a compilation failure with certain
compiler/OS versions (though it is unclear which).
Reported-by: Peter Bartoli <peter@bartoli.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Introduced in commit 661a0f7. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Has always been leaky. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Has always been leaky. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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On error path. Introduced in commit a046433a. Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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