microblaze_load_kernel() fails to call
qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename) when no -machine
options are given. This can't normally happen, because -machine
option kernel is mandatory for this target. Fix it anyway, by using
qemu_get_machine_opts().
Cc: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-6-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Multiple -machine options with the same ID are merged. All but the
one without an ID are to be silently ignored.
In most places, we query these options with a null ID. This is
correct.
In some places, we instead query whatever options come first in the
list. This is wrong. When the -machine processed first happens to
have an ID, options are taken from that ID, and the ones specified
without ID are silently ignored.
Example:
$ upstream-qemu -nodefaults -S -display none -monitor stdio -machine id=foo -machine accel=kvm,usb=on
$ upstream-qemu -nodefaults -S -display none -monitor stdio -machine id=foo,accel=kvm,usb=on -machine accel=xen
$ upstream-qemu -nodefaults -S -display none -monitor stdio -machine accel=xen -machine id=foo,accel=kvm,usb=on
$ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine accel=kvm,usb=on
QEMU 1.5.50 monitor - type 'help' for more information
(qemu) info kvm
kvm support: enabled
(qemu) info usb
(qemu) q
$ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine id=foo -machine accel=kvm,usb=on
QEMU 1.5.50 monitor - type 'help' for more information
(qemu) info kvm
kvm support: disabled
(qemu) info usb
(qemu) q
$ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine id=foo,accel=kvm,usb=on -machine accel=xen
QEMU 1.5.50 monitor - type 'help' for more information
(qemu) info kvm
kvm support: enabled
(qemu) info usb
USB support not enabled
(qemu) q
$ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine accel=xen -machine id=foo,accel=kvm,usb=on
xc: error: Could not obtain handle on privileged command interface (2 = No such file or directory): Internal error
xen be core: can't open xen interface
failed to initialize Xen: Operation not permitted
Option usb is queried correctly, and the one without an ID wins,
regardless of option order.
Option accel is queried incorrectly, and which one wins depends on
option order and ID.
Affected options are accel (and its sugared forms -enable-kvm and
-no-kvm), kernel_irqchip, kvm_shadow_mem.
Additionally, option kernel_irqchip is normally on by default, except
it's off when no -machine options are given. Bug can't bite, because
kernel_irqchip is used only when KVM is enabled, KVM is off by
default, and enabling always creates -machine options. Downstreams
that enable KVM by default do get bitten, though.
Use qemu_get_machine_opts() to fix these bugs.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-5-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
To be used in the next few commits to fix or clean up queries of
"machine" options (-machine and its sugared forms).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-4-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Commit 4f6dd9a changed the initialization of opts in opts_parse() to
this:
if (defaults) {
if (!id && !QTAILQ_EMPTY(&list->head)) {
opts = qemu_opts_find(list, NULL);
} else {
opts = qemu_opts_create(list, id, 0);
}
} else {
opts = qemu_opts_create(list, id, 1);
}
Same as before for !defaults.
If defaults is true, and params has no ID, and options exist, we use
the first assignment. It sets opts to null if all options have an ID.
opts_parse() then returns null. qemu_opts_set_defaults() asserts the
value is non-null. It's the only caller that passes true for
defaults.
To reproduce, try "-M xenpv -machine id=foo" (yes, "id=foo" is silly,
but it shouldn't crash).
I believe the function attempts to do the following:
If options don't yet exist, create new options
Else, if defaults, modify the existing options
Else, if list->merge_lists, modify the existing options
Else, fail
A straightforward call of qemu_opts_create() does exactly that.
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-3-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Crashes when the first list member has an ID. Admittedly nonsensical
reproducer:
$ qemu-system-x86_64 -nodefaults -machine id=foo -machine ""
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1372943363-24081-2-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It seems to be unused since several years (commit
be995c2764 in 2006).
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1373044036-14443-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Fix few more memory leaks in virtio-9p-device.c detected using valgrind.
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Message-id: 1372929678-14341-1-git-send-email-mohan@in.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This leak was reported by cppcheck.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: M. Mohan Kumar <mohan@in.ibm.com>
Message-id: 1371376960-18192-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Previous realization doesn't consider flags in the status register.
Add DS and INTR bits of HST_STS register set after transaction execution.
Update bits resetting in HST_STS register. Update error processing:
if DEV_ERR bit set transaction isn't execution.
Signed-off-by: MRatnikov <m.o.ratnikov@gmail.com>
Message-id: 1373230982-9190-1-git-send-email-m.o.ratnikov@gmail.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
With mon:stdio you can exit the VM by switching to the monitor and
sending the "quit" command. It is then useful to pass Ctrl-C to the
VM instead of exiting.
This in turn lets us stop tying the default signal handling behavior
to -nographic, removing gratuitous differences between "-display none"
and "-nographic".
This patch changes behavior for "-display none -serial mon:stdio", as
expected, but not for "-display none -serial stdio".
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1372868986-25988-1-git-send-email-mjt@msgid.tls.msk.ru
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
For bsd-user and linux-user emulation modes QEMU needs to be linked at an
alternate .text segment address, so that it's out of the way of the guest
executable. Instead of including modified linker scripts for each arch,
just set the address with -Ttext-segment if supported, or by using sed to
edit the default linker script.
Cc: Ed Maste <emaste@freebsd.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Acked-by: Ed Maste <emaste@freebsd.org>
Signed-off-by: Ed Maste <emaste@freebsd.org>
Message-id: 1371867016-7660-1-git-send-email-rth@twiddle.net
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This includes some pci enhancements:
Better support for systems with multiple PCI root buses
FW cfg interface for more robust pci programming in BIOS
Minor fixes/cleanups for fw cfg and cross-version migration -
because of dependencies with other patches
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'mst/tags/for_anthony' into staging
pci,misc enhancements
This includes some pci enhancements:
Better support for systems with multiple PCI root buses
FW cfg interface for more robust pci programming in BIOS
Minor fixes/cleanups for fw cfg and cross-version migration -
because of dependencies with other patches
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Sun 07 Jul 2013 03:11:18 PM CDT using RSA key ID D28D5469
# gpg: Can't check signature: public key not found
# By David Gibson (10) and others
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
pci: Fold host_buses list into PCIHostState functionality
pci: Remove domain from PCIHostBus
pci: Simpler implementation of primary PCI bus
pci: Add root bus parameter to pci_nic_init()
pci: Add root bus argument to pci_get_bus_devfn()
pci: Replace pci_find_domain() with more general pci_root_bus_path()
pci: Use helper to find device's root bus in pci_find_domain()
pci: Abolish pci_find_root_bus()
pci: Move pci_read_devaddr to pci-hotplug-old.c
pci: Cleanup configuration for pci-hotplug.c
pvpanic: fix fwcfg for big endian hosts
pvpanic: initialization cleanup
MAINTAINERS: s/Marcelo/Paolo/
e1000: cleanup process_tx_desc
pc_piix: cleanup init compat handling
pc: pass PCI hole ranges to Guests
pci: store PCI hole ranges in guestinfo structure
range: add Range structure
Message-id: 1373228271-31223-1-git-send-email-mst@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The host_buses list is an odd structure - a list of pointers to PCI root
buses existing in parallel to the normal qdev tree structure. This patch
removes it, instead putting the link pointers into the PCIHostState
structure, which have a 1:1 relationship to PCIHostBus structures anyway.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
There are now no users of the domain field of PCIHostBus, so remove it
from the structure, and as a parameter from the pci_host_bus_register()
function which sets it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently pci_find_primary_bus() searches the list of root buses for one
with domain 0. But since host buses are always registered with domain 0,
this just amounts to finding the only PCI host bus. The only remaining
users of pci_find_primary_bus() are in pci-hotplug-old.c, which implements
the old style pci_add/pci_del commands.
Therefore, this patch redefines pci_find_primary_bus() to find the only
PCI root bus, returning an error if there are multiple roots. The callers
in pci-hotplug-old.c are updated correspondingly, to produce sensible
error messages.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
At present, pci_nic_init() and pci_nic_init_nofail() assume that they will
only create a NIC under the primary PCI root. As we add support for
multiple PCI roots, that may no longer be the case. This patch adds a root
bus parameter to pci_nic_init() (and updates callers accordingly) to allow
the machine init code using it to specify the right PCI root for NICs
created by old-style -net nic parameters. NICs created new-style, with
-device can of course be put anywhere.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci_get_bus_devfn() interprets a full PCI address string to give a PCIBus *
and device/function number within that bus. Currently it assumes it is
working on an address under the primary PCI root bus. This patch extends
it to allow the caller to specify a root bus. This might seem a little odd
since the supplied address can (theoretically) include a PCI domain number.
However, attempting to use a non-zero domain number there is currently an
error, so that shouldn't really cause problems.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci_find_domain() is used in a number of places where we want an id for a
whole PCI domain (i.e. the subtree under a PCI root bus). The trouble is
that many platforms may support multiple independent host bridges with no
hardware supplied notion of domain number.
This patch, therefore, replaces calls to pci_find_domain() with calls to
a new pci_root_bus_path() returning a string. The new call is implemented
in terms of a new callback in the host bridge class, so it can be defined
in some way that's well defined for the platform. When no callback is
available we fall back on the qbus name.
Most current uses of pci_find_domain() are for error or informational
messages, so the change in identifiers should be harmless. The exception
is pci_get_dev_path(), whose results form part of migration streams. To
maintain compatibility with old migration streams, the PIIX PCI host is
altered to always supply "0000" for this path, which matches the old domain
number (since the code didn't actually support domains other than 0).
For the pseries (spapr) PCI bridge we use a different platform-unique
identifier (pseries machines can routinely have dozens of PCI host
bridges). Theoretically that breaks migration streams, but given that we
don't yet have migration support for pseries, it doesn't matter.
Any other machines that have working migration support including PCI
devices will need to be updated to maintain migration stream compatibility.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently pci_find_domain() performs two functions - it locates the PCI
root bus above the given bus, then looks up that root bus's domain number.
This patch adds a helper function to perform the first task, finding the
root bus for a given PCI device. This is then used in pci_find_domain().
This changes pci_find_domain()'s signature slightly, taking a PCIDevice
instead of a PCIBus - since all callers passed something of the form
dev->bus, this simplifies things slightly.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci_find_root_bus() takes a domain parameter. Currently PCI root buses
with domain other than 0 can't be created, so this is more or less a long
winded way of retrieving the main PCI root bus. Numbered domains don't
actually properly cover the (non x86) possibilities for multiple PCI root
buses, so this patch for now enforces the domain == 0 restriction in other
places to replace pci_find_root_bus() with an explicit
pci_find_primary_bus().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add myself into MAINTAINERS file, I'll looking at target-openrisc
and hw/openrisc.
Signed-off-by: Jia Liu <proljc@gmail.com>
Message-id: 1372769717-852-1-git-send-email-proljc@gmail.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch fixes a number of incorrect F: patterns which didn't
match any files in the source tree. This was caused by a mix
of minor typos (- for _ and the like) and a few entries which
hadn't been correctly updated following the rearrangement of hw/.
Offending entries were located with the following shell rune:
for pattern in $(sed -ne 's/^F: //p' MAINTAINERS); do
if ! stat --printf='' $pattern 2>/dev/null; then
echo bad pattern: $pattern
fi
done
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-id: 1372070972-30776-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
# By Fam Zheng (2) and Stefan Hajnoczi (1)
# Via Stefan Hajnoczi
* stefanha/block:
block: fix bdrv_flush() ordering in bdrv_close()
curl: refuse to open URL from HTTP server without range support
vmdk: Implement .bdrv_has_zero_init
Message-id: 1373023972-3587-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
# By Paolo Bonzini (50) and others
# Via Paolo Bonzini
* bonzini/iommu-for-anthony: (66 commits)
exec: change some APIs to take AddressSpaceDispatch
exec: remove cur_map
exec: put memory map in AddressSpaceDispatch
exec: separate current radix tree from the one being built
exec: move listener from AddressSpaceDispatch to AddressSpace
memory: move MemoryListener declaration earlier
exec: separate current memory map from the one being built
exec: change well-known physical sections to macros
qom: Use atomics for object refcounting
memory: add reference counting to FlatView
memory: use a new FlatView pointer on every topology update
memory: access FlatView from a local variable
add a header file for atomic operations
hw/[u-x]*: pass owner to memory_region_init* functions
hw/t*: pass owner to memory_region_init* functions
hw/s*: pass owner to memory_region_init* functions
hw/p*: pass owner to memory_region_init* functions
hw/n*: pass owner to memory_region_init* functions
hw/m*: pass owner to memory_region_init* functions
hw/i*: pass owner to memory_region_init* functions
...
Message-id: 1372950842-32422-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since 80ccf93b we flush the block device during close. The
bdrv_drain_all() call should come before bdrv_flush() to ensure guest
write requests have completed. Otherwise we may miss pending writes
when flushing.
Call bdrv_drain_all() again for safety as the final step after
bdrv_flush(). This should not be necessary but we can be paranoid here
in case bdrv_flush() left I/O pending.
Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
CURL driver requests partial data from server on guest IO req. For HTTP
and HTTPS, it uses "Range: ***" in requests, and this will not work if
server not accepting range. This patch does this check when open.
* Removed curl_size_cb, which is not used: On one hand it's registered to
libcurl as CURLOPT_WRITEFUNCTION, instead of CURLOPT_HEADERFUNCTION,
which will get called with *data*, not *header*. On the other hand the
s->len is assigned unconditionally later.
In this gone function, the sscanf for "Content-Length: %zd", on
(void *)ptr, which is not guaranteed to be zero-terminated, is
potentially a security bug. So this patch fixes it as a side-effect. The
bug is reported as: https://bugs.launchpad.net/qemu/+bug/1188943
(Note the bug is marked "private" so you might not be able to see it)
* Introduced curl_header_cb, which is used to parse header and mark the
server as accepting range if "Accept-Ranges: bytes" line is seen from
response header. If protocol is HTTP or HTTPS, but server response has
no not this support, refuse to open this URL.
Note that python builtin module SimpleHTTPServer is an example of not
supporting range, if you need to test this driver, get a better server
or use internet URLs.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Depending on the subformat, has_zero_init queries underlying storage for
flat extent. If it has a flat extent and its underlying storage doesn't
have zero init, return 0. Otherwise return 1.
Aligns the operator assignments.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
cur_map is not used anymore; instead, each AddressSpaceDispatch
has its own nodes/sections pair. The priorities of the
MemoryListeners, and in the future RCU, guarantee that the
nodes/sections are not freed while they are still in use.
(In fact, next_map itself is not needed except to free the data on the
next update).
To avoid incorrect use, replace cur_map with a temporary copy that
is only valid while the topology is being updated. If you use it,
the name prev_map makes it clear that you're doing something weird.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
After this patch, AddressSpaceDispatch holds a constistent tuple of
(phys_map, nodes, sections). This will be important when updates
of the topology will run concurrently with reads.
cur_map is not used anymore except for freeing it at the end of the
topology update.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This same treatment previously done to phys_node_map and phys_sections
is now applied to the dispatch field of AddressSpace. Topology updates
use as->next_dispatch while accesses use as->dispatch.
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This will help having two copies of AddressSpaceDispatch during the
recreation of the radix tree (one being built, and one that is complete
and will be protected by RCU). We do not want to have to unregister and
re-register the listener.
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently, phys_node_map and phys_sections are shared by all
of the AddressSpaceDispatch. When updating mem topology, all
AddressSpaceDispatch will rebuild dispatch tables sequentially
on them. In order to prepare for RCU access, leave the old
memory map alive while the next one is being accessed.
When rebuilding, the new dispatch tables will build and lookup
next_map; after all dispatch tables are rebuilt, we can switch
to next_* and free the previous table.
Based on a patch from Liu Ping Fan.
Signed-off-by: Liu Ping Fan <qemulist@gmail.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Sections like phys_section_unassigned always have fixed address
in phys_sections. Declared as macro, so we can use them
when having more than one phys_sections array.
Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Liu Ping Fan <qemulist@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Object reference counts will soon be changed outside the BQL. So we need
to use atomics in object_ref/unref.
Based on a patch by Liu Ping Fan.
Signed-off-by: Liu Ping Fan <qemulist@gmail.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
With this change, a FlatView can be used even after a concurrent
update has replaced it. Because we do not yet have RCU, we use a
mutex to protect the small critical sections that read/write the
as->current_map pointer. Accesses to the FlatView can be done
outside the mutex.
If a MemoryRegion will be used after the FlatView is unref-ed (or after
a MemoryListener callback is returned), a reference has to be added to
that MemoryRegion. memory_region_find already does it for the region
that it returns. The same will be done for address_space_translate
as soon as the dispatch tree is also converted to RCU-style.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is the first step towards converting as->current_map to
RCU-style updates, where the FlatView updates run concurrently
with uses of an old FlatView.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We will soon require accesses to as->current_map to be placed under
a lock (with reference counting so as to keep the critical section
small). To simplify this change, always fetch as->current_map into
a local variable and access it through that variable.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We're already using them in several places, but __sync builtins are just
too ugly to type, and do not provide seqcst load/store operations.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Markus Armbruster